Erythropompilus venterisetalis Wu & Ma, 2023

Wu, Haiying, Li, Qiang & Ma, Li, 2023, The spider wasp genus Erythropompilus Shimizu & Pitts, 2021 (Hymenoptera Pompilidae) in China, with description of two new species and an updated key to world species, Zootaxa 5244 (2), pp. 160-172 : 162-164

publication ID	https://doi.org/ 10.11646/zootaxa.5244.2.4
publication LSID	lsid:zoobank.org:pub:B89B5171-3D4D-4FDD-8CCF-94DCE8A56EAE
DOI	https://doi.org/10.5281/zenodo.7670774
persistent identifier	https://treatment.plazi.org/id/10A825F9-9A88-49C2-BEB5-D9A44684CB96
taxon LSID	lsid:zoobank.org:act:10A825F9-9A88-49C2-BEB5-D9A44684CB96
treatment provided by	Plazi
scientific name	Erythropompilus venterisetalis Wu & Ma
status	sp. nov.

Treatment

Erythropompilus venterisetalis Wu & Ma , sp. nov.

Figs 1 View FIGURE 1 , 4 View FIGURE 4 (A–C)

urn:lsid:zoobank.org:act:10A825F9-9A88-49C2-BEB5-D9A44684CB96

Material examined. Holotype: CHINA, Yunnan, Xishuangbanna, Mengla, Xishuangbanna Tropical Botanical Garden , teak plantation, ♁, 21°54′N 101°16′E, 508 m, Malaise trap, 13.VII–13.VIII.2021, coll. Yong-sheng Pu (YNAU) GoogleMaps . Paratypes: CHINA, Yunnan, 13♁, same locality as holotype, GoogleMaps 14.VII–14.VIII.2020 (5♁), coll. Yongsheng Pu, GoogleMaps 24.IV–31.V.2019 (7♁), coll. Ling Zhao, GoogleMaps 14.IX–14.X.2019 (1♁), coll. Ling Zhao; GoogleMaps 2♁, Xishuangbanna Prefecture, Wild Elephant Valley , 22°6′N 100°51′E, 783 m, 15.VII.2016, coll. Qing-xia Zhou (YNAU) GoogleMaps .

Diagnosis. The male of the new species is similar to E. thailandensis Pitts & Shimizu, 2021 in having the following characteristics: body black, mesosoma partly orange-red ( Figs 1A View FIGURE 1 , 5A View FIGURE 5 ), clypeus as broad as LID ( Figs 1D View FIGURE 1 , 5D View FIGURE 5 ), mid and hind femora with small spines set in pits apicodorsally, and exposed portion of SGP flat, mostly parallel-sided ( Fig. 1K View FIGURE 1 ); but markedly differs by the characters given in the Table 1. View TABLE 1

Description. Male. (Measurements of the holotype are given in parentheses). Length: body 4.3–6.3 (5.8) mm; forewing 4.1–5.6 (4.6) mm. Body black; mandible reddish brown at apical 1/4, sometimes subapical yellow brown, basal of mandible with 2–5 (3) brown long setae ( Fig. 1D View FIGURE 1 ); the following yellow brown to fulvous: palpi, scape, pedicel, F1–F4 beneath, apical 1/7 of fore femora ventrally, fore tibia ventrally, fore tarsus ( Figs 1A, 1D View FIGURE 1 ); the following orange: posterior margin of pronotum, sides of mesoscutum and posterior margin, mesopleuron, scutellum, metanotum, postnotum, upper half of mesopleuron and posterior rim of propodeum ( Figs 1A, 1E View FIGURE 1 ).

Head: Mandible with one inner tooth, clypeus slightly convex in lateral view, anterior margin nearly straight ( Figs 1C, 1D View FIGURE 1 ). In frontal view, head 1.19–1.25 (1.25) × as broad as long; vertex slightly convex between eye tops, frontal line fine and inconspicuous; MID large, 0.58–0.62 (0.6) × as broad as TFD; UID: MID: LID = 8.0–9.0 (8): 10: 7.5–8.0 (7.5); clypeus 2.3–2.7 (2.5) × as broad as long, clypeus equal to LID ( Fig. 1D View FIGURE 1 ). In dorsal view, ocellar area with several sparse punctures, ocelli in obtuse triangle, POD: OOD = 1: 0.7–0.8 (0.73); antennocular line distinctly inclined from antennal base toward eye ( Fig. 1B View FIGURE 1 ); antenna pointed at apex, F1 2.5–3.1 (3) × as long as thick, 0.5–0.67 (0.61) × as long as UID, length ratios of scape, pedicel, F1–F3 = 11–12 (12): 4: 14–15(15): 15: 14–15 (15) ( Figs 1G, 1H View FIGURE 1 ). In lateral view, gena short, 0.2–0.3 (0.2) × eye width ( Fig. 1C View FIGURE 1 ).

Mesosoma: Lateral margin of pronotal dorsum, in dorsal view, slightly narrowing anteriorly, pronotum posterior margin slightly arcuate, and conspicuously shorter than mesoscutum ( Fig. 1E View FIGURE 1 ); in dorsal view, mesoscutum slightly raised, notaulus fine and short anteriorly and medially, parapsidal sulcus reaching nearly 5/6 of mesoscutum; scutellum disc slightly raised, convex above level of mesoscutum; metanotum posterior margin extending at middle and covering postnotum partly; postnotum nearly 1/10 as long as metanotum, depressed medially and narrower than laterally; propodeum, in dorsal view, parallel-sided at anterior half, strongly narrowing at posterior half; in lateral view, gently convex, posterior slope at apical 1/3; propodeal enclosure irregularly reticulate-rugose, and with a pair of subparallel longitudinal carinae medially.

Wing: Pterostigma long, 5–6.5 (6) × as long as 2r-rs; marginal cell removed from wing tip by 0.4 × its own length; SMC2: SMC3 = 1: 1.3–1.6 (1.3) on vein M, 1: 0.4–0.6 (0.5) on vein RS, SMC2 broad on vein RS by 1: 0.9–1 (0.9) × its length on vein M, receiving crossvein 1m-cu at basal 0.35–0.55 (0.5); SMC3 narrowed on vein RS by 0.3–0.4 (0.4) × its length on vein M, receiving crossvein 2m-cu at basal 0.5–0.6 (0.55), removed from outer wing margin by 1.4–1.9 (1.5) × its own length. FW crossvein cu-a originating at or slightly beyond fork of vein M+CuA; HW crossvein cu-a arc-like, originating anterior to fork of vein M+CuA (fig. 1F).

Legs: Mid and hind femora with 1–2 small spines set in pits apicodorsally; mid tibia dorsally with 3–5 (5) stout brown spines externally and 1–3 (3) brown spines internally, mid tibia ventrally with 0–2 (0) small brown spines externally and 0–2 (1) small brown spines internally; hind tibia dorsally with 5–6 (6) stout brown spines externally and 4–5 (5) stout brown spines internally, hind tibia ventrally with 1–3 (2) small brown spines externally and 1–3 (2) small brown spines internally. Longer spur of hind tibia 0.68–0.72 (0.7) × hind tarsomere 1.

Metasoma: Side of S4 and S5, each with tuft of dense, erect and black bristles ( Fig. 1J View FIGURE 1 ); S6 flat ventrally, posterior margin with arcuate emargination ( Fig. 1I View FIGURE 1 ); S6 with long blade-like longitudinal keel medially, almost reaching posterior margin ( Fig. 1I View FIGURE 1 ).

SGP and genitalia: SGP, in ventral view, exposed part broad and parallel-sided, translucent and rounded apically, basal sides with weak carina; in lateral view, SGP flat, slightly thickened basally and medially, and with sparse, oblique backward setae, subapically ones long ( Fig. 1K View FIGURE 1 ). Paramere very short, oval-like ( Fig. 4A View FIGURE 4 ); volsella narrow in basal 1/3, gradually broadened towards apex, rounded apically, with numerous long setae in apical 1/2 ( Fig. 4B View FIGURE 4 ); parapenial lobe conspicuously extending apex of volsella, inner margin in apical 1/3 with fine and irregular serrate ( Fig. 4C View FIGURE 4 ); aedeagus conspicuously longer than parapenial lobe, mostly parallel-sided, apical margin slightly emarginated medially ( Fig. 4B View FIGURE 4 ).

Female. Unknown.

Distribution. China (Yunnan).

Etymology. The specific name venterisetalis originates from the Latin "venter" (=ventral) and "setalis" (=setae), referring to S4 and S5 of the male with a dense tuft of bristles on the sides.

E. venterisetalis Wu & Ma , sp. nov.	E. thailandensis Pitts & Shimizu, 2021
a Placoid sensilla small, no more than 1/2 of each flagel-	flagellomere ( Figs 1G, 1H View FIGURE 1 ).	Placoid sensilla large, much longer than 1/2 of each flagellomere ( Figs 1G, 1H View FIGURE 1 ). lomere.	lomere.
flagellomere ( Figs 1G, 1H View FIGURE 1 ).	lomere.
b Frons spherically convex in profile ( Fig. 1C View FIGURE 1 ).	Frons gently convex in profile.
c Side of S4 and S5, each with tuft of dense, erect and	Side of S4 and S5 without tuft of dense, erect and black
black bristles ( Fig. 1J View FIGURE 1 ); S6 with long blade-like longitudinal	medikeel medially, almost reaching posterior margin, posteriorly	bristles; S6 without long blade-like longitudinal keel medikeel medially, almost reaching posterior margin, posteriorly ally, posteriorly with inverted-V-shaped emargination.	ally, posteriorly with inverted-V-shaped emargination.
medikeel medially, almost reaching posterior margin, posteriorly	ally, posteriorly with inverted-V-shaped emargination.
with arcuate emargination ( Fig. 1I View FIGURE 1 ).
d SGP broad ( Fig. 1K View FIGURE 1 ).	SGP narrow.
e Inner margin of parapenial lobe with fine and irregular	Inner margin of parapenial lobe smooth, without serrate.
serrate in apical 1/3 ( Fig. 4C View FIGURE 4 ).
f Volsella broadened at apical 2/3, apical 1/2 with numer-	Volsella broadened at apical 1/3, apex with short setae.
ous long setae ( Fig. 4B View FIGURE 4 ).