Allorhynchium quadrimaculatum Gusenleitner 1997
Creators: name: Tan, Jiang-Li
name: Achterberg, Cornelis Van
name: He, Yi-Fei
name: Carpenter, James M.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Vespidae
Allorhynchium
Allorhynchium quadrimaculatum

description: Allorhynchium quadrimaculatum Gusenleitner, 1997
(Figs 4, 56–65)
Allorhynchium quadrimaculatum Gusenleitner, 1997: 759, 2011: 1362; Girish Kumar et al. 2016: 34.
Material. 1 ♂ (RMNH), “ N. Vietnam: Vinh Phuc, Tam Dao, 930 m, N 21°31´, E109°33´, 27–29.ix.2017, hand net, C. v. Achterberg, RMNH ”.
Redescribed ♂ from Vietnam (Tam Dao), body length 12.1 mm (measured from anterior border of head to the posterior margin of tergum II (T2)); fore wing length 12.9 mm.
Head. In frontal view narrowed ventrally, about as wide as high (Fig. 62), its width 2.5 × its median length in dorsal view (Fig. 63). Vertex densely covered with very coarse, flat-bottomed punctures, punctures strongly raised forming a reticulate pattern, gradually contracted behind eye (Fig. 63), without cephalic foveae; distance from posterior ocelli to occipital carina slightly longer than twice distance from posterior ocelli to inner eye margin (Fig. 63). Gena and frons reticulate as vertex, gena narrower than eye in lateral view (Fig. 57), strongly depressed near occipital carina, in lateral view 0.8 × as wide as eye (measured through ocular sinus); occipital carina complete, present along entire length of gena and rather narrow (Fig. 57). Inner eye margins convergent ventrally; in frontal view about 1.2 × further apart from each other at vertex than at clypeus. Clypeus moderately punctate (Fig. 62), in lateral view weakly and evenly convex; in frontal view 0.8 × as wide as high, with apical margin strongly emarginate medially, with sharp lateral teeth (Fig. 62); width of emargination less than 0.4 × maximum width of clypeus. Mandible with three teeth, outer one pointed apically. Antennal scape 3.7 × as long as its maximum width (Fig. 61); F1 1.6 × as long as its width, F2–3 slightly longer than wide, F4 as wide as long, F5–8 weakly wider than long, F9 narrower apically, 1.2 ×longer than wide, with a ventral notch for F 10–11 in curved position, F10 small, F11 slender and slightly curved, hook-like, reaching to the basal margin of F9 (Figs 61, 65).
Mesosoma. Mesosoma 1.1 × longer than wide in dorsal view (Fig. 58). Pronotal carina slightly raised, reaching ventral corner of pronotum but not protruding (Fig. 58); anterior face of pronotum smooth medially with sparse punctures laterally. Mesoscutum without prescutal furrows, convex, slightly wider than long between tegulae; anterior margin broadly rounded (Fig. 58). Scutellum convex, in lateral view at same level with mesoscutum, scuto-scutellar suture strongly depressed and crenulate (Fig. 58). Punctation of pronotum, mesoscutum, scutellum and metanotum similar to that of frons; mesepisternum with dense, coarse, well-defined punctures postero-dorsally, barely punctured antero-ventrally; epicnemial carina present; dorsally metapleuron with few strong striae; ventral metapleuron with sparse shallow punctures (Fig. 57). Metanotum slightly sloping down to apical margin, forming part of dorsal surface of mesonotum. Propodeum vertical, dorsally propodeum coarsely reticulate-punctate, not protruding medio-dorsally, median area of propodeum moderately concave (Figs 58, 59), sparsely punctate with oblique faint striations ventrally, medio-longitudinal carina complete, propodeum reticulate latero-dorsally and sparsely punctate latero-ventrally; submarginal carina not projecting as rounded lobe above propodeal valvula (Fig. 60). Tegula smooth, emarginate near parategula and not exceeding parategula; axillary fossa narrower than long, slit-like (Fig. 58).
Wings. Fore wing: Parastigma longer than half the length of pterostigma, measured along posterior part (Fig. 56); second submarginal cell sessile, first and second recurrent veins both received in second submarginal cell; vein 2r-m relatively close to wing apex anteriorly (Fig. 56).
Metasoma. T1 0.8 × narrower than T2, truncate at base; anterior vertical surface with sparse minute punctures, well-separated from its posterior horizontal part, with dense punctures and a transverse depression on anterior 1/3 of dorsal portion (Fig. 59), transverse rim complete and rather low; punctures of apical 2/3 portion of T1 moderately dense; maximum width of T1 1.8 × its length in dorsal view; T2 punctate, 1.4 × wider than long; S2 protruding medially into a transverse crest (Figs 4, 60); terminal sternum (S7) with two teeth basally (Fig. 64).
Color. Black (including legs and tegula); clypeus except lateral and apical margins, a narrow line on inner margin of eye from base of clypeus to ocular sinus, lateral band of T2 subapically and propodeal vulva yellow (Figs 4, 60); wings entirely strongly infuscated with bluish coppery sheen (Fig. 56).
Female. According to the original description, similar to male, but clypeus entirely black, S 2 in lateral view evenly convex, somewhat steeper toward basal groove, and sternites with short pubescence only (Gusenleitner 1997).
Distribution. Laos, * Vietnam. New record for Vietnam.
description: Published as part of Tan, Jiang-Li, Achterberg, Cornelis Van, He, Yi-Fei & Carpenter, James M., 2018, Northeast Asian Allorhynchium van der Vecht (Hymenoptera: Vespidae), with a key to Oriental species, pp. 49-64 in Zootaxa 4434 (1) on pages 57-60, DOI: 10.11646/zootaxa.4434.1.3, http://zenodo.org/record/1290962