Stenodyneriellus maolanensis, Li & Chen, 2016

Li, Ting-Jing & Chen, Bin, 2016, Two newly recorded genera Stenodyneriellus and Lissodynerus with three new species from China (Hymenoptera, Vespidae, Eumeninae), Journal of Hymenoptera Research 49, pp. 111-127 : 114-117

Stenodyneriellus maolanensis sp. n.

Figs 10-14

Material examined.

Holotype, ♀, China, Guizhou Province, Qiannan State, Libo County, Maolan National Nature Reserve , Dongdai Village , 25°14'54.88"N, 107°54'4.38"E, 782m, 21.VI.2015, Tingjing Li, No. 1004064 (CQNU).

Description.

Female (Figs 10-14 ): body length 9.0 mm, forewing length 7.5 mm. Black; with the following parts dark ferruginous: pronotum except a thin yellow band medially (Fig. 10 ), tegula entirely, anterior half of metanotum, and entire dorsal surface of propodeum (Fig. 12 ); clypeus except medial black spot (Fig. 11 ), a small spot on mandible basally, scape ventrally, a large and wide band along inner eye orbit occupying entire ocular sinus, interantennal spot, a thin postocular band, a thin band on pronotum medially, parategula, fore tibia laterally, a apical band on each of T1-T3 (Fig. 13 ), and a lateral spot on apical margin of S2 yellow; fore femur apically, tibia mostly and tarsi dark brown. Wings lightly infuscate. Setae pale brown.

Head. Clypeus somewhat convex medially, coarsely punctate and somewhat reticulate medially, apex deeply emarginated medially (Fig. 11 ), clypeal width 1.28 × its length, total width: apical width = 1.19: 0.39, apical width approximately equal to interantennal space; interantennal carina prominent; frons evenly convex, very coarsely and densely punctate, and distinctly reticulate; punctures on vertex more sparsely than those on frons; cephalic fovea present; POD almost as wide as OOD.

Mesosoma. Pronotum, mesoscutum, mesepisternum, mesoscutellum, metanotum and propodeum very coarsely and deeply punctate, and reticulate, these punctures nearly as deep as and sparser than those on frons, punctures on mesepisternum and propodeum denser than those on pronotum, mesoscutum and mesoscutellum. Pronotal carina complete, somewhat rounded dorsally and emarginated laterally; mesoscutum, mesepisternum, mesoscutellum normal; metanotum with a short dorsal convex surface and sloping posteriorly. Propodeum well-developed; dorsal surface almost in the same horizontal plane as metanotum, prolonged in a medial direction protruding upward so as to form two teeth behind metanotum (Fig. 12 ), well-separated from posterior surface, coarser than lateral and posterior surfaces, and interspaces between punctures distinctly carinate; lateral surface somewhat reticulate; posterior surface widely and deeply concave, and punctate. Tegula wide, length slightly longer than its width, and posterior lobe small; parategula hooked and its apex slightly exceeding the apex of tegula.

Metasoma. In dorsal view, T1 domed, width 1.81 × its length and 0.83 × width of T2, without a transverse carina anteriorly, distinctly punctate, interspace between punctures almost equal to one diameter, punctures distinctly smaller than those on frons and mesosoma; T2 with a translucent, thin, blade-shaped lamella apically (Fig. 13 ), punctures similar to those on T1; S2 somewhat depressed basally and distinctly punctate (Fig. 14 ), punctures distinctly larger and denser than those of T2, and gen erally smaller than those on head and mesosoma; visible parts of T3-T6 and S3-S6 coriaceous and with minute punctures; the apical yellow bands on T1-T2 distinctly wider than that on T3, and with U-shaped gaps medially (Fig. 13 ).

Male. Unknown.

Distribution.

China (Guizhou).

Remarks.

This species is easily distinguished from all other species of Stenodyneriellus by the following character combination: T2 with a translucent, thin, blade-shaped lamella apically (Fig. 13 ), T2 and S2 distinctly punctate (Fig. 13-14 ), propodeum protruding upward so as to form two teeth behind metanotum dorsally (Fig. 12 ), clypeus deeply emarginated apically (Fig. 11 ), and pronotum, metanotum and dorsal surface of propodeum dark ferruginous.

Etymology.

It is named after the type locality of the species, Maolan National Nature Reserve in Guizhou of China.

Figures

Figures 10 - 14. Stenodyneriellus maolanensis sp. n. 10 habitus of holotype (dorsal view), ♀ 11 clypeus, ♀ 12 propodeum, ♀ 13 metasoma (dorsal view), ♀ 14 metasoma (ventral view), ♀.