Stilbops japonicus, Watanabe, Kyohei & Maeto, Kaoru, 2012

Watanabe, Kyohei & Maeto, Kaoru, 2012, Taxonomic study of the genus Stilbops Förster from Japan (Hymenoptera: Ichneumonidae: Stilbopinae), Zootaxa 3456, pp. 51-81 : 66-68

publication ID	https://doi.org/ 10.5281/zenodo.211080
DOI	https://doi.org/10.5281/zenodo.6178658
persistent identifier	https://treatment.plazi.org/id/8079878D-FFA6-FF85-4DAD-6BDEFE957608
treatment provided by	Plazi
scientific name	Stilbops japonicus
status	sp. nov.

Treatment

Stilbops japonicus sp. nov.

( Figs. 2 View FIGURE 2 E, 3 E, 4 E, 5 E, 6 E, 7 E, 8 E, 9 E, 10 E, 12 H, 13)

Diagnosis. Head and mesosoma covered with dense punctures. Clypeal margin convex to subtruncate in anterior view ( Fig. 2 View FIGURE 2 E); anterior tentorial pit small ( Fig. 2 View FIGURE 2 E), its margin concealed by dense setae; lower end of occipital carina effaced ( Fig. 4 View FIGURE 4 E); lower part of gena without concavity in lateral view ( Fig. 3 View FIGURE 3 E). Tegula yellow; hind femur yellowish-brown; metasomal tergites black;

Description. Female (n=10). Body length 5.3–5.9 (HT: 5.0) mm; length of fore wing 4.0–4.6 (HT: 4.6) mm.

Head densely punctate, almost separated less than 1.0 times of their diameter, 0.5 times as long as wide; clypeus 0.5 times as long as wide, narrowly punctate dorsally, its margin convex to subtruncate in anterior view ( Fig. 2 View FIGURE 2 E); anterior tentorial pit small ( Fig. 2 View FIGURE 2 E), its margin concealed by setae; face 0.6–0.7 (HT: 0.7) times as long as wide, covered with dense punctures; frons covered with punctures as face and area above antennal socket transversely striated; OOL 2.0 times as long as OD; POL 1.6 times as long as OD; lower end of occipital carina effaced ( Fig. 4 View FIGURE 4 E); GOI 0.5–0.6 (HT: 0.5); lower part of gena without concavity in lateral view ( Fig. 2 View FIGURE 2 E); malar space 1.0 times as long as basal width of mandible; mandibular base flat. Antenna with 18–20 (HT: 19) flagellomeres; flagellomere I 1.1–1.2 (HT: 1.1) times as long as II, and terminal flagellomere 2.5–3.2 (HT: 2.8) times as long as preceding one; sensilla placodea present on flagellomere III and following all segments.

Mesosoma densely punctate ( Figs. 5 View FIGURE 5 E, 6 E, 7 E, 8 E); lower margin of pronotum angulate ( Fig. 5 View FIGURE 5 E); upper end of epomia closely located with upper margin of pronotum in lateral view ( Fig. 5 View FIGURE 5 E); lateral area of pronotum punctate except for smooth area on lower 0.3, smooth area more or less transversely rugose posteriorly ( Fig. 5 View FIGURE 5 E); mesoscutum without distinct notaulus, only tracery present; smooth area around episternal scrobe rather small; upper end of epicnemial carina reaching lower 0.2–0.3 of pronotum; juxtacoxal carina present; all carinae of propodeum present ( Fig. 8 View FIGURE 8 E) or center part of posterior transverse carina partly effaced, anterior part of lateromedian longitudinal carinae coalescent ( Fig. 8 View FIGURE 8 E); all areas of propodeum punctate except for center of area superomedia with small smooth area ( Fig. 8 View FIGURE 8 E).

Fore wing: Cu-a distant from Rs&M by 0.5–0.8 (HT: 0.5) times length of Cu-a; ICI 0.8–1.0 (HT: 0.8). Hind wing: NI 4.0–6.7 (HT: 6.7); one basal hamulus, 5 or 6 distal hamuli.

Hind femur 4.6–5.1 (HT: 4.6) times as long as deep in lateral view; hind tibia 8.4–9.0 (HT: 8.4) times as long as deep in lateral view; hind tarsomere ratio I; II; III; IV; V = 3.0; 1.25–1.3 (HT. 1.3); 0.9–1.0 (HT: 1.0); 0.5–0.6 (HT: 0.6); 0.8–0.95 (HT: 0.95).

Metasoma: TI 1.2–1.3 (HT: 1.3) times as long as maximum width, with median dorsal carina on anterior 0.5, with weak distal depression, and lateral margin weakly convex basally ( Fig. 10 View FIGURE 10 E); TII and TIII with slight round convexities; subgenital plate covered with shallow, fine punctures. Ovipositor upcurved in posterior half; ovipositor sheath 0.5 times as long as hind tibia.

Coloration ( Figs. 6 View FIGURE 6 E, 7 E, 9 E, 12 E): body (excluding legs) black, except for: apex of mandible blackishbrown; antenna dark brown to black, its ventral side more or less paler than dorsal side; yellow palpi; yellow tegula; stigma brown; wing veins brown except for yellow of extreme wing base; anterior margin of TII and following tergites yellow; membranous part of sternites yellow; ovipositor and tip of ovipositor sheath brown. Legs yellowish-brown to brown, except for: coxae black; trochanters and trochantelli yellow; apex of hind femur blackish-brown; hind tibia more or less darkened basally and apically; hind tarsus except for bases of each segment blackish-brown.

Male. Unknown.

Type series. Holotype: female [Honshu] Kanagawa Pref., Hadano city, Mt. Koubouyama, 200 m, N35°37’64" E139°15’73", 12. iv. 2008, K. Watanabe leg. ( NIAES). Paratypes (9Ƥ): [Honshu] 1Ƥ, Iwate Pref., Mt. Hayachine, 1000m alt., 5–11. vii. 1989, H. Makihara & M. Sharkey leg., Malaise trap ( AEI); 1Ƥ, Niigata Pref., Kurokawa vil., Tainai, 3–4. vi. 1980, H. Takemoto leg. ( NIAES); 1Ƥ, Ibaragi Pref., Mt. Tsukuba, 1–20. v. 1989, M. Sharkey leg. ( AEI); 1Ƥ, same data as holotype except for collected at 30. iv. 2006 (TUA); 1Ƥ, Yamanashi Pref., Hokuto city, Masutomi, Biwakubo-sawa, 1220 m, K. Watanabe leg. (TUA); 1Ƥ, Fukui Pref., Tsuruga city, Mt. Norikura-dake, 18. v. 1980, T. Murota leg. ( NSMT); 2Ƥ, Tottori Pref., Mt. Daisen, Daisenji, 800 m, 30. v. 1983, K. Konishi leg. ( NIAES). [Kyushu] 1Ƥ, Fukuoka Pref., Mt. Hiko-san, 23. v. 1986, T. Yasunaga leg., Light trap ( NIAES).

Distribution. Japan (Honshu and Kyushu) ( Fig. 13 View FIGURE 13 ).

Etymology. The specific name is from the “ Japan ”.

Remarks. This species closely resembles mandibularis Kasparyan in the margin of anterior tentorial pit obscure by dense setae, the lower part of gena without concavity and the body coloration, and can be distinguished from the latter by the incomplete lower end of occipital carina (completely present in mandibularis ) and the dense body punctation (relatively sparse in mandibularis ). This species was collected at the edge of broadleaf forests ( Fig.14 View FIGURE 14 B).