Amphibulus areolaris
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Ordo: Hymenoptera
Familia: Ichneumonidae
Genus: Amphibulus
Name
Amphibulus areolaris Sheng, Li & Yang sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnosis
Gena (Figs 1C, 2B) slightly convex medio-longitudinally, with dense punctures. Postocellar line 0.7 × as long as ocular-ocellar line. Areolet (Figs 1A, 3B) receiving vein 2m-cu at posterior 0.2. Metapleuron with coarse dense punctures. Propodeum with area basalis distinctly wider than long, reversed trapezoidal. Area superomedia (Fig. 3C) wider than long. Tergites smooth. Posterior end of first sternite distinctly basad of spiracle. Flagellomeres 10–12 (13) of male with tyloids. Head, mesosoma and tergites 16 entirely black.
Description
Female. Body length 8.6–10.1 mm. Fore wing length 6.8–8.0 mm. Ovipositor sheath length approximately 2.1–2.3 mm.
Head. Inner eye orbits divergent ventrally. Face (Fig. 1B) 2.0 × as wide as long, convex medially, with dense longitudinal punctures; dorsal margin with median small tubercle. Anterior tentorial pit relatively large, transversely elliptic. Median point of clypeal sulcus below line reaching ventral margins of eyes. Clypeus (Fig. 1B) shiny, distinctly convex, with sparse irregular punctures, 3.1 × as wide as long, apical margin weakly evenly arched forward, distinctly convex medially. Mandible (Fig. 2A) with transverse wrinkles, dense yellow brown setae and sparse punctures; teeth strong, upper tooth 1.5 × longer than lower tooth. Subocular sulcus indistinct. Malar space 0.5 × as long as basal width of mandible. Gena (Figs 1C, 2B) in dorsal view 0.8–0.9 × as long as width of eye, slightly convex median-longitudinally, with more or less dense punctures, distance between punctures mainly 0.2 to 1.0 × their diameter. Vertex (Fig. 2B) and frons with texture as gena. Postocellar line 0.7 × as long as ocular-ocellar line. Antenna with 27–28 flagellomeres. Flagellomeres 11 to 25 slightly wider than long, slightly flattened in ventral profile. Ratios of lengths from first to fifth flagellomeres: 1.1:1.2:1.1:1.1:1.0. Occipital carina complete, reaching hypostomal carina distinctly above base of mandible.
Mesosoma. Pronotum (Fig. 2C) with yellow brown setae; dorsal posterior area shiny, with distinct punctures; lower portion with dense oblique transverse wrinkles. Epomia long, strong. Mesoscutum (Fig. 2D) shiny, with uneven punctures, postero-median portion with irregular longitudinal wrinkles. Notauli distinct anteriorly. Scutoscutellar groove steep, with distinct longitudinal wrinkles. Scutellum slightly convex, with irregular punctures and weak longitudinal wrinkles; lateral carina reaching almost to apex. Antero-lateral portion of postscutellum with deep concavity, posterior portion distinctly convex transversely. Mesopleuron (Fig. 3A) with irregular transverse wrinkles, median portion with uneven punctures; speculum small. Dorsal end of epicnemial carina closing anterior margin of mesopleuron, almost reaching to 0.5 distance to subtegular ridge. Metapleuron slightly convex, with dense punctures and yellow brown setae; juxtacoxal carina almost complete. Anterior portion of submetapleural carina strongly convex. Fore wing (Figs 1A, 3B) with vein 1cu-a almost opposite 1/M. Areolet pentagonal, lateral veins convergent forwardly, receiving vein 2m-cu approximately at posterior 0.2. Postnervulus intercepted distinctly below middle. Hind wing vein 1-cu strongly inclivous, 3.0 × as long as cu-a. Ratio of length of hind tarsomeres from first to fifth: 6.4:2.8:2.0:1.0:2.5. Propodeum (Fig. 3C) completely areolated; apophysis distinct; area basalis reversed trapezoid, anterior half smooth, posterior with sparse punctures. Area superomedia wider than long, receiving costula slightly before its middle, with indistinct punctures. Remainder areas with indistinct punctures, irregular weak wrinkles and yellow brown setae. Propodeal spiracle relatively larger, obliquely elliptic, approximate 3.0 × as long as wide.
Metasoma (Fig. 3D). First tergite approximately 1.9 × as long as posterior width, smooth, shiny. Postpetiole distinctly widened posteriorly, posterior width approximately 1.3 × as its length, anterior and lateral portions with weak sparse punctures; latero-median carina indistinct; dorso-lateral and ventro-lateral carinae complete. Posterior end of first sternite distinctly basad of spiracle. Spiracle circular, small, located approximately at posterior 0.4 of first tergite. Tergites 2–4 shiny. Second tergite smooth, 0.5 × as long as posterior width, with sparse indistinct fine punctures. Third tergite 0.47 × as long as maximum width, with texture as second tergite, punctures denser than on second tergite. Fourth tergite with distinct fine punctures, denser than on third tergite. Ovipositor sheath 0.8 × as long as hind tibia. Ovipositor (Fig. 3E) compressed, with indistinct subapical nodus and weak notch; ventral valve with three weak teeth.
Coloration (Fig. 1A). Black, except the following: dorsal profiles of flagellomeres 7–12 white, ventrally slightly brownish black; apical portion of flagellum brown to dark brown. Median portion of mandible, maxillary and labial palpi darkish red. Fore and mid coxae brown to darkish brown; femora, basal portions of tibiae and tarsi predominantly dark brown. Hind coxa and trochanter brown; tarsomeres brownish black. Posterior margins of tergites 6–8 white medially.
Male. Body length 8.8–11.2 mm. Fore wing length 6.4–8.4 mm. Antenna with 26–28 flagellomeres. Flagellomeres 10–12 (13) with tyloids. Face 1.6 × as wide as long. Clypeus 2.6 × as wide as long. Median portion of mesopleuron smooth. Area superomedia of propodeum 2.0 × as wide as long. Apophysis indistinct. Black, except for following: Ventral profiles of flagellomeres 1–5, maxillary and labial palpi, fore tibia and first tarsomere yellowish brown. Flagellomeres 6–13, hind tarsomeres 1 apically and 2–4 white. Fore and mid femora reddish brown. Remainder of characteristics similar to female.
Etymology
The specific name is derived from the area superomedia being wider.
Material examined
Holotype. China • ♀; Guizhou Province, Fanjingshan National Natural Reserve; 31 May 2019; leg. Tao Li; CBDPC.
Paratypes. China • 1 ♀, 5 ♂♂; same data as holotype except: Fanjingshan National Natural Reserve, Yapanlin; 15 May to 7 July 2019; IT by Mao-Fei Tian; CBDPC • 1 ♂; same data as holotype except: Fanjingshan National Natural Reserve, Lengjiaba; 11 September 2019; IT by Zheng-Hai Yang; CBDPC.
Original Description
- Li, T; Yang, Z; Sun, S; Sheng, M; 2023: Three new species of Amphibulus Kriechbaumer (Hymenoptera, Ichneumonidae, Phygadeuontinae) from China with a key to species known from the Oriental and Eastern Palaearctic Regions Journal of Hymenoptera Research, 96: 847-862. doi
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