taxonID	type	description	language	source
F57DEB7A802C5543AB74E35E79FDBAF4.taxon	description	Figure 11	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F57DEB7A802C5543AB74E35E79FDBAF4.taxon	etymology	Etymology. This specific epithet alludes to the Greek mythological monster Chimera which combined a lion’s head, a goat’s body and a serpent’s tail, denoting the males of the new species resembling S. noctilio and females resembling S. nitobei.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F57DEB7A802C5543AB74E35E79FDBAF4.taxon	diagnosis	Diagnosis. Females with wings largely clear (Fig. 11 A); vein 3 A of forewings absent; antennae and legs largely blackish (Fig. 3 A); tarsal pad of metatarsomere 2 0.7 – 0.8 times as long as ventral length of tarsomere (Fig. 7 A). Males with antennae completely dark (Fig. 3 B); abdomen segments I – III and VIII – IX largely blackish, IV – VII light yellowish (Fig. 10 B); metafemur blackish. Female Description. Color: Body, legs blackish with dark blue metallic reflections (Fig. 11 A, B), terga II – VII sometimes with dark purple metallic reflections medially (Fig. 10 A). Antennae and palpi blackish (Fig. 3 A). Forewings mainly clear, at most tinted with light brown near outer margin. — Head: Genae with pits less than 4.0 pit diameters apart (Fig. 6 A); vertex with pits less than 3.0 pit diameters apart (Fig. 5 A), and each pit diameter about 0.3 times as lateral ocelli. — Thorax: Mesoscutum with large pits densely developed in median area, transverse ridges vague. Metatarsomere 2 in lateral view about 2.2 – 2.5 times as long as height, length about 1.0 – 1.1 times length of tarsomeres 3 + 4; tarsal pad 0.7 – 0.8 times as long as ventral length of tarsomere (Fig. 7 A). Forewings vein 3 A absent. — Abdomen: Median basin of tergum IX with basal width about 1.2 times as long as median length, maximum width about 1.3 – 1.5 times as long as median length, median length about 0.55 – 0.65 times of cornus length. Cornus in dorsal view relatively short, with edges straight to slightly angulate midway; its median length 1.05 – 1.15 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section about 1.2 times as long as apical section. Ovipositor. Pits near middle annuli (the area at base of apical section of sheath) 0.27 – 0.30 times as long as an annulus (Fig. 10 A), pits scarcely decreasing in size toward ovipositor base, 0.35 – 0.41 times as high as lancet height in lateral view, 1.0 – 1.1 times as long as pits height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F57DEB7A802C5543AB74E35E79FDBAF4.taxon	description	Male Description. Color: Head, thorax and coxae black with dark blue metallic reflections (Fig. 11 C, D). Antennae and hind legs blackish (Fig. 3 B), except the base of metatibia and metatarsomere 4 yellowish. Fore and middle legs predominantly yellowish, femora blackish at basal half and reddish brown at apical half, metatarsomeres 5 blackish. Forewings tinted with light yellowish and slightly pale brownish near outer margin. Abdomen segments I – III and VIII black with dark blue metallic reflections, terga III and VIII partly yellowish, segments IV – VII light yellowish, sternum IX blackish, rarely with yellowish tone at margins (Fig. 9 B). — Thorax: Metatibia 4.0 – 4.3 times as long as maximum width (Fig. 8 A). Metatarsomere 1 in lateral view 3.2 – 3.4 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F57DEB7A802C5543AB74E35E79FDBAF4.taxon	distribution	Distribution. Only known from the type locality in Inner Mongolia (Chifeng City)	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F8A8C4EAA20F505EAA5FFC3636E08F85.taxon	description	Figure 12	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F8A8C4EAA20F505EAA5FFC3636E08F85.taxon	diagnosis	Diagnosis. Females with wings largely clear (Fig. 12 A, F); vein 3 A of forewings absent; antennae completely blackish; legs largely bright yellowish (except coxae blackish); tarsal pad of metatarsomere 2 about 0.8 times as long as ventral length of tarsomere (Fig. 7 B).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F8A8C4EAA20F505EAA5FFC3636E08F85.taxon	description	Female Description. Color: Head and thorax blackish with dark blue metallic reflections (Fig. 12 A, E). Antennae and palpi dark brownish to blackish (Fig. 3 C). Legs yellowish (except coxae black with dark blue metallic reflections). Forewings almost clear. Abdomen blackish with dark purple metallic reflections (Fig. 9 C). — Head: Genae with pits 0.3 – 5.6 pit diameters apart (Fig. 6 C); vertex with pits less than 5.0 pit diameters apart, and each pit diameter about 0.12 – 0.23 times as lateral ocelli (Fig. 5 C). — Thorax: Mesoscutum with large pits densely developed in median area, with transverse and longitudinal ridges in coarsely pitted area. Metatarsomere 2 in lateral view about 2.2 – 2.3 times as long as height, length about 0.9 – 1.0 times length of tarsomeres 3 + 4; tarsal pad about 0.8 times as long as ventral length of tarsomere (Fig. 7 B). Forewings vein 3 A absent. — Abdomen: Median basin of tergum IX with basal width about 0.8 – 1.0 times as long as median length, maximum width 1.3 – 1.5 times as long as median length, median length 0.6 – 0.8 times of cornus length. Cornus in dorsal view short, with edges straight, its median length 0.9 – 1.1 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section 1.05 – 1.15 times as long as apical section. Ovipositor. Pits near middle annuli (the area at base of apical section of sheath) 0.13 – 0.18 times as long as an annulus (Fig. 10 B), pits moderately decreasing in size toward ovipositor base, 0.18 – 0.30 times as high as lancet height in lateral view, 1.08 – 1.60 times as long as pit height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F8A8C4EAA20F505EAA5FFC3636E08F85.taxon	description	Male Description. Color: Head, thorax, and coxae black with dark blue metallic reflections (Fig. 12 C, D). Antennae and hind legs blackish (Fig. 3 D). Fore and middle legs with tarsus yellowish, femora and tibiae dark yellowish brown. Forewings tinted light yellowish. Abdomen segments I – IV, VIII and sternum IX black with dark blue or purple metallic reflections, segments V – VII largely light yellowish with apical part of each segment darkish with purple metallic reflections (Fig. 9 D). — Thorax: Metatibia 3.6 times as long as maximum width (Fig. 8 B). Metatarsomere 1 in lateral view 2.9 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F8A8C4EAA20F505EAA5FFC3636E08F85.taxon	distribution	Distribution. Gansu (Zhangye City; Wuwei City; Baiyin City), Ningxia (Helan Mountains), Qinghai (Menyuan County), Xinjiang (Urumqi; Shihezi City; Yili City; Tacheng City; Altay Prefecture; Changji Prefecture).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
917931DA64065AFB894B3443A00BFF1B.taxon	description	Figure 13	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
917931DA64065AFB894B3443A00BFF1B.taxon	diagnosis	Diagnosis. Females with forewings more or less darkened at least in the middle part (Fig. 13 A, B); vein 3 A of forewings basally present (Fig. 13 B); antennae completely blackish (Fig. 3 E); legs largely darkish; tarsal pad of metatarsomere 2 about 0.8 times as long as ventral length of tarsomere (Fig. 7 C). Males with flagellar basally yellowish (Fig. 3 F); abdomen segments I – III and VII – IX blackish, IV – VI light yellowish (Fig. 9 F). Metafemur largely blackish with a yellowish spot developed apically (Fig. 13 E).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
917931DA64065AFB894B3443A00BFF1B.taxon	description	Female Description. Color: Head and thorax blackish with dark blue metallic reflections (Fig. 13 A, C). Antennae and palpi dark brownish to blackish (Fig. 3 E). Legs with coxae and femora black with dark blue metallic reflections, tibiae and tarsi dark brownish. Forewings with basal half almost clear and apical half pale brownish hue, sometimes with brownish moderately deepening before pterostigma, thus forms vague brownish bands (Fig. 13 B). Abdomen blackish with terga I and IX dark bluish metallic reflections while terga II – VIII dark purple metallic reflections in dorsal view (Fig. 9 E). — Head: Genae with pits 0.7 – 3.0 pit diameters apart (Fig. 6 E), vertex and postocellar area with pits less than 3.5 pit diameters apart (Fig. 5 E), and each pit diameter about 0.2 – 0.5 times as lateral ocelli. — Thorax: Mesoscutum with coarse net-like pits on median area, with indistinct transverse and longitudinal ridges in coarsely pitted area. Metatarsomere 2 in lateral view about 2.3 – 2.5 times as long as height, length about 1.15 – 1.25 times length of tarsomeres 3 + 4; tarsal pad about 0.8 times as long as ventral length of tarsomere (Fig. 7 C). Forewings vein 3 A basally present (Fig. 13 B). — Abdomen: Median basin of tergum IX with basal width 0.8 – 0.9 times as long as median length, maximum width 1.1 – 1.2 times as long as median length, median length 0.8 – 0.9 times of cornus length. Cornus in dorsal view short, with edges straight and angulate midway, its median length 1.0 – 1.2 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section 1.04 – 1.10 times as long as apical section. Ovipositor. Pits near middle of annuli (the area at base of apical section of sheath) 0.06 – 0.1 times as long as annulus (Fig. 10 C), pits moderately decreasing in size toward ovipositor base, about 0.37 times as high as lancet height in lateral view, 0.5 – 0.6 times as long as pits height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
917931DA64065AFB894B3443A00BFF1B.taxon	description	Male Description. Color: Head, thorax and coxae black with dark blue metallic reflections (Fig. 13 D, E). Antennae with scape and pedicel blackish, flagella basally yellowish from flagellomere 1 to flagellomere 3 – 5, distal part of flagellar darkish (Fig. 3 F). Fore and mid legs with femora blackish (sometimes fore femora grades to brownish-yellow apically), tibiae and tarsi yellowish. Hind legs mostly blackish except a yellowish spot on the apical part of femora and metatarsomeres 4 – 5 yellowish. Forewings tinted light yellow and slightly pale brownish near outer margin. Abdomen with segments I – III and VII – IX black with dark blue metallic reflections, segments IV – VI light yellowish (Fig. 9 F). — Thorax: Metatibia about 4.1 – 4.2 times as long as maximum width (Fig. 8 C). Metatarsomere 1 in lateral view 3.3 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
917931DA64065AFB894B3443A00BFF1B.taxon	distribution	Distribution. Qinghai (Huzhu County, Banma County); Xinjiang (Fuyun County, Buerjin County).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
394EEC0288585BC796F78A3B6AA44451.taxon	description	Figure 14	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
394EEC0288585BC796F78A3B6AA44451.taxon	diagnosis	Diagnosis. Females with apical half of forewings tinted pale brownish (Fig. 14 A); vein 3 A of forewings absent; antennae with flagellar basally bright yellowish (Fig. 3 G); legs largely bright yellowish (except coxae blackish); tarsal pad of metatarsomere 2 about 0.7 times as long as ventral length of tarsomere (Fig. 7 D). Male antennae with flagellar basally bright yellowish (Fig. 3 H); hind femora bright yellowish.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
394EEC0288585BC796F78A3B6AA44451.taxon	description	Female Description. Color: Head, thorax, coxae and abdomen black with dark blue metallic reflections (abdomen with segments II – VIII dark purple metallic reflections) (Fig. 14 A). Antennae with basal half yellowish (except for scape dark brownish to brownish) while gradient to blackish towards the apical half (Fig. 3 G). Femora brownish; tibiae and tarsi yellowish (sometimes with tarsomeres 5 brownish). Forewings with basal half clear and tinted pale brownish on apical half, brownish spot around cell 1 R 1 weakly developed. — Head: Genae with pits 0.1 – 5.0 pit diameters apart (Fig. 6 G); vertex with pits less than 3.0 pit diameters apart, and each pit diameter 0.11 – 0.32 times as lateral ocelli (Fig. 5 G). — Thorax: Mesoscutum with coarse, net-like pits in median area, transverse or longitudinal ridge indistinct or absent. Metatarsomere 2 in lateral view 2.0 – 2.5 times as long as height, length about 1.1 – 1.3 times length of tarsomeres 3 + 4; tarsal pad about 0.7 times as long as ventral length of tarsomere (Fig. 7 D). Forewings vein 3 A absent. — Abdomen: Median basin of tergum IX with basal width 0.8 – 0.9 times as long as median length, maximum width 1.0 – 1.2 times as long as median length, median length 0.7 – 0.8 times of cornus length. Cornus in dorsal view long and thick, with edges straight and curved apically, clearly angled at about 1 / 6 of the basal junction, its median length 1.2 – 1.3 as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section 1.0 – 1.1 times as long as apical section. Ovipositor. Pits near middle annuli (the area at base of apical section of sheath) 0.25 – 0.30 times as long as an annulus, pits not decreasing in size toward base (Fig. 10 D), 0.4 – 0.5 times as high as lancet height in lateral view, 0.9 – 1.0 times as long as pits height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
394EEC0288585BC796F78A3B6AA44451.taxon	description	Male Description. Color: Head, thorax and coxae black with dark blue metallic reflections (Fig. 14 C). Antennae with basal half bright yellowish while blackish in the apical half (Fig. 3 H). Fore and mid legs bright yellowish from femora to tarsi. Hind legs mostly blackish except femora bright yellowish. Forewings tinted light yellow and slightly pale brownish near outer margin. Abdomen with segments I – II blackish with dark blue metallic reflections; segments V – VIII light yellowish; segments III – IV and IX largely yellowish with more or less darkish tone (Fig. 9 H). — Thorax: Metatibia about 3.9 – 4.0 times as long as maximum width (Fig. 8 D). Metatarsomere 1 in lateral view 3.5 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
394EEC0288585BC796F78A3B6AA44451.taxon	distribution	Distribution. Heilongjiang; Jilin; Inner Mongolia; Shanxi; Gansu; Qinghai; Xinjiang.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
FECDEFED876A5C64BAF1709B11708322.taxon	diagnosis	Diagnosis. Both sexes with vein Cu 1 present on forewing; body always with blue, purple or greenish metallic reflections on dark areas; genae without ridge behind eye, without a white spot dorsally. Females with cornus in dorsal view not constricted near the middle.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
D71D0462A4085794914246157AFC8E02.taxon	description	Figure 15	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
D71D0462A4085794914246157AFC8E02.taxon	diagnosis	Diagnosis. Females with apical half of forewings moderately to strongly darkened (Fig. 15 A – D); vein 3 A of forewings absent; antennae completely blackish (Fig. 3 I); tarsal pad of metatarsomere 2 0.7 – 0.8 times as long as ventral length of tarsomere (Fig. 7 E). Males with flagellar basally brownish to dark brownish (Fig. 3 J); abdomen segments completely darkish or I – II blackish, III – IX yellowish (Fig. 9 L, M).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
D71D0462A4085794914246157AFC8E02.taxon	description	Female Description. Color: With different color forms. Head, Antennae and thorax blackish with dark blue metallic reflections. In dark forms, legs blackish with more or less dark blue metallic reflections (Fig. 15 A). In red forms, color of legs variable, coxae and femora blackish with dark blue or purple metallic reflections, while tibiae and tarsi from dark brownish to completely light reddish brown (variable based on individuals) (Fig. 15 B, C, H). Forewings with basal half clear and apical half brownish to dark brownish (in red form comparatively light but darkened in dark forms), brownish area moderately deepening before pterostigma, sometimes forms vague brownish bands. Dark forms with abdomen completely blackish, terga I and IX always dark blueish metallic reflections while terga II – VIII dark purple metallic reflections in dorsal view (Fig. 9 I). Red forms with color of abdomen variable, terga I and IX always dark blueish metallic reflections while terga II – VIII from more or less reddish brown to completely light reddish brown (Fig. 9 J, K). — Head: Genae with pits 0.1 – 2.5 pit diameters apart (Fig. 6 I), vertex and postocellar area with pits less than 2.0 pit diameters apart, and each pit diameter about 0.1 – 0.25 times as lateral ocelli (Fig. 5 I). — Thorax: Mesoscutum widely covered with net-like pits in median area. Metatarsomere 2 in lateral view 1.7 – 2.0 times as long as height, length about 0.9 – 1.1 times length of tarsomeres 3 + 4; tarsal pad 0.7 – 0.8 times as long as ventral length of tarsomere (Fig. 7 E). Forewings vein 3 A absent. — Abdomen: Median basin of tergum IX with basal width about 0.8 – 1.1 times as long as median length (always less than 1.0 times in red forms, while more than 1.0 times in intermediate and dark forms), maximum width 0.9 – 1.3 times as long as median length (always less than 1.0 times in red forms, while about 1.2 times in intermediate and dark forms), median length 0.8 – 1.1 times of cornus length. Cornus in dorsal view rather short, with edges in the basal half straight and curved apically, distinctly angulate midway, its median length 0.7 – 0.9 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section 1.1 – 1.3 times as long as apical section. Ovipositor. Pits near middle annuli (the area at base of apical section of sheath) 0.27 – 0.33 times as long as an annulus, pits not decreasing in size toward ovipositor base (Fig. 10 E), about 0.4 times as high as lancet height in lateral view, 0.7 – 0.9 times as long as pits height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
D71D0462A4085794914246157AFC8E02.taxon	description	Male Description. Color: With different color forms. Head, thorax and coxae blackish with dark blue metallic reflections. Antennae with basal half dark brownish to brownish (except for scape blackish) and apical half blackish (Fig. 3 J). Fore and middle legs brownish to yellowish brown (except coxae black). Hind legs with femora yellowish brown (in dark forms dark brownish) (Fig. 15 E – G); metatibiae blackish. In dark forms with metatarsomere 1 – 3 and 5 blackish while metatarsomere 4 brownish in dorsal view; in red forms with metatarsomere 1 – 3 blackish while metatarsomere 4 + 5 yellowish brown. Fore and hindwings yellowish. Abdomen with segments I – II blackish with dark blue or purple metallic reflections; in dark forms with terga III – VIII (including sternum IX) dark brownish (Fig. 9 L), while light yellowish brown in red forms (Fig. 9 M). — Thorax: Metatibia 4.2 – 4.9 times as long as maximum width (Fig. 8 E). Metatarsomere 1 in lateral view 2.7 – 3.1 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
D71D0462A4085794914246157AFC8E02.taxon	distribution	Distribution. Almost nationwide: Heilongjiang; Jilin; Liaoning; Inner Mongolia; Beijing; Hebei; Henan; Shandong; Shaanxi; Anhui; Jiangsu; Zhejiang; Gansu; Yunnan; Xinjiang.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
ADE2A4A6DE5F542A9A29B3A5C74335B5.taxon	description	Figure 16	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
ADE2A4A6DE5F542A9A29B3A5C74335B5.taxon	diagnosis	Diagnosis. Females with brownish spot around cell 1 R 1 (Fig. 16 A); vein 3 A of forewings absent; antennae completely blackish (Fig. 3 K); legs largely yellowish (except coxae blackish); tarsal pad of metatarsomere 2 0.3 – 0.4 times as long as ventral length of tarsomere (Fig. 7 F). Males with antennae completely darkish (Fig. 3 L); abdomen segments I – II and VIII – IX blackish, III – VII yellowish (Fig. 9 O); hind femora reddish brown.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
ADE2A4A6DE5F542A9A29B3A5C74335B5.taxon	description	Female Description. Color: Body, antennae and palpi black with dark blue or purple metallic reflections (Fig. 16 A). Coxae and apical tarsomeres blackish; femora (except basal part brownish), tibiae and tarsi light yellowish brown (In black forms with metafemur blackish). Forewings mostly clear but with brownish spot around cell 1 R 1. — Head: Genae with small pits about 3.0 – 9.0 pit diameters apart (Fig. 6 K), vertex and postocellar area with pits 1.0 – 8.0 pit diameters apart, each pit diameter about 0.1 – 0.2 times as lateral ocelli (Fig. 5 K). — Thorax: Mesoscutum with large and shallowly pits in median area, pits more or less tooth-like process behind and teeth rarely fused transversally, thus without distinct transverse ridges. Metatarsomere 2 in lateral view 2.9 – 3.5 times as long as height, length about 1.1 – 1.4 times tarsomeres 3 + 4; tarsal pad 0.3 – 0.4 times as long as ventral length of tarsomere (Fig. 7 F). Forewings vein 3 A absent. — Abdomen: Median basin of tergum IX with basal width 0.9 – 1.1 times as long as median length, maximum width about 1.1 – 1.3 times as long as median length, median length 0.5 – 0.7 times of cornus length. Cornus in dorsal view short, with edges in the basal half straight and slightly curved apically, its median length about 1.0 – 1.2 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal part about 1.0 – 1.3 times as long as length of apical section. Ovipositor. Pits near middle annuli (the area at base of apical section of sheath) 0.50 – 0.75 times as long as an annulus, pits slightly decreasing in size toward base (Fig. 10 F), 0.6 – 0.8 times as high as lancet height in lateral view, 1.4 – 2.0 times as long as pits height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
ADE2A4A6DE5F542A9A29B3A5C74335B5.taxon	description	Male Description. Color: Head, thorax, antenna and coxae black with dark blue metallic reflections (Fig. 16 C, D). For and middle legs with femora (except for basal part brown), tibiae and tarsi light yellowish brown; metatibia and metatarsus blackish (except metatarsomere 4 and basal part of metatarsomere 5 yellowish brown); basal part of metatibia with yellowish brown area about 2.0 – 3.0 times as long as minimum width of tibia (Fig. 8 F). Forewings light yellowish, with pale brownish hue slightly developed near outer margin. Abdomen with terga I – II and VIII (including sternum IX) blackish, while III – VII light yellowish brown (sometimes color of tergum III can be variable, from black with dark purple metallic reflections to yellowish brown) (Fig. 9 O). — Thorax: Metatibia 3.8 – 4.2 times as long as maximum width (Fig. 8 F). Metatarsomere 1 in lateral view 2.7 – 3.8 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
ADE2A4A6DE5F542A9A29B3A5C74335B5.taxon	distribution	Distribution. Mainly distributed in Northeast China: Heilongjiang; Jilin; Liaoning; Inner Mongolia.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F6D6C720DE1F59748B0B01BF6BB61F21.taxon	description	Figure 17	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F6D6C720DE1F59748B0B01BF6BB61F21.taxon	diagnosis	Diagnosis. Females with wings largely clear (Fig. 17 A); vein 3 A of forewings absent; antennae completely blackish; legs largely blackish; thorax and abdomen shiny blackish; tarsal pad of metatarsomere 2 about 0.45 times as long as ventral length of tarsomere.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F6D6C720DE1F59748B0B01BF6BB61F21.taxon	description	Female Description. Color: Head, thorax and abdomen shiny blackish (Fig. 17 A, B). Antennae and palpi dark brownish to blackish. Legs blackish to dark brownish. Wings clear, with apex and outer margin slightly brownish hue. Veins dark brownish to blackish, pterostigma black. — Head: Genae with pits less than 2.0 pit diameters apart; vertex with pits less than 4.0 pit diameters apart. — Thorax: Mesoscutum with large pits densely developed in median area, more or less reticulate patterns in coarsely pitted area. Metatarsomere 2 with its length 0.88 times length of tarsomeres 3 + 4; tarsal pad 0.45 times as long as ventral length of tarsomere. Fore wing vein 3 A absent. — Abdomen: Median basin of tergum IX without longitudinal ridge, basal width about 0.7 times as long as median length, maximum width about 1.0 times as long as median length, median length 0.65 times cornus length. Cornus in dorsal view long, triangular shaped without distinct angulate midway, its median length 2 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section 1.14 times as long as apical section. Ovipositor. Pits near middle annuli (the area at base of apical section of sheath) about 0.3 times as long as an annulus, 0.54 times as high as lancet height in lateral view, 0.85 times as long as pits height (Fig. 10 G).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
F6D6C720DE1F59748B0B01BF6BB61F21.taxon	distribution	Distribution. Qinghai (Maqin County). Only recorded from the type locality.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
C198BE2ACEA25CAD88A800AF0C6D6B29.taxon	description	Figure 18	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
C198BE2ACEA25CAD88A800AF0C6D6B29.taxon	diagnosis	Diagnosis. Females with wings largely clear (Fig. 18 A, D); vein 3 A of forewings absent; antennae completely blackish; legs largely bright yellowish (except coxae blackish); Males antennae completely darkish; abdomen with segments I – III and IX darkish, IV – VIII yellowish brown; hind femora bright reddish brown.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
C198BE2ACEA25CAD88A800AF0C6D6B29.taxon	description	Female Description. Color: Head and thorax blackish with dark blue metallic reflections. Antennae and palpi dark brownish to blackish. Legs brownish to yellowish (except coxae black with dark blue metallic reflections). Forewings almost clear. Abdomen blackish with dark purple metallic reflections. — Head: Genae with pits less than 5.4 pit diameters apart; vertex with pits less than 6.6 pit diameters apart, and each pit diameter about 0. 25 – 0.46 times as lateral ocelli. — Thorax: Mesoscutum with large pits densely developed in median area, more or less reticulate patterns in coarsely pitted area. Metatarsomere 2 with its length 0.84 times length of tarsomeres 3 + 4. Fore wing vein 3 A absent. — Abdomen: Median basin of tergum IX with distinct median longitudinal ridge, basal width about 0.75 – 0.82 times as long as median length, maximum width 1.0 – 1.1 times as long as median length, median length 0.7 – 0.8 times of cornus length. Cornus in dorsal view short, its median length 1.5 – 1.7 times as long as maximum width of abdomen at junction of terga IX and X. Sheath. Basal section 1.14 times as long as apical section. Ovipositor. Not examined.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
C198BE2ACEA25CAD88A800AF0C6D6B29.taxon	description	Male Description. Color: Head, thorax and coxae black with dark blue or greenish metallic reflections. Antennae dark brownish to blackish. Fore and middle legs reddish brown from femora to tarsi. Hind legs mostly blackish except femora bright reddish brown. Forewings tinted light yellow and slightly pale brownish near outer margin. Abdomen with segments I – III and IX darkish; segments IV – VIII yellowish brown. — Thorax: Metatibia about 3.1 times as long as maximum width. Metatarsomere 1 in lateral view 3.3 times as long as maximum height.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
C198BE2ACEA25CAD88A800AF0C6D6B29.taxon	distribution	Distribution. Xinjiang (near Urumqi, Qiemo County); South Gansu (near Zhuoni County)	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
77DDB09A4BC85503B140E1F73DBB0454.taxon	description	General description of female. Antennae with 21 segments, robust, blackish, covered with dark bristles. Abdomen dark bluish, dorsal segments II – VII completely silky, VIII – IX glossy, covered with sparsely setae; cornus short, conical, basal part completely smooth, apex pointed and rough; ovipositor shorter than abdomen. Legs blackish, tibiae and tarsi of fore and middle legs rust-colored. Wings sub-hyaline with violet sheen; apex slightly smoky, darkened part developed in the basal-middle part, veins black; costa yellowish-brown. Holotype ♀ length 31 mm.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
77DDB09A4BC85503B140E1F73DBB0454.taxon	description	General description of male. Male unknown.	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
77DDB09A4BC85503B140E1F73DBB0454.taxon	distribution	Distribution. Sichuan (Guangyuan City) (as in the original description).	en	Ge, Sixun, Gao, Tai, Liu, Yizhou, Li, Jiale, Shi, Juan, Ren, Lili, Shi, Hongliang (2025): A revision of the Wood wasp genus Sirex Linnaeus, 1760 [1761] (Hymenoptera: Siricoidea: Siricidae) in China. Arthropod Systematics & Phylogeny 83: 391-413, DOI: 10.3897/asp.83.e155906
