Siniphanerotomella yunnanensis, 2024

S. yunnanensis Yao et van Achterberg , sp. nov.

Figs 1–2 View FIGURE 1 View FIGURE 2

Material. Holotype, ♀ ( BIIC), China, Yunnan, Gaoligong Mountain, Old Street , 98°47’ 15.21” N, 25°18’ 01.59” E, elevation 1941m, Malaise trap, 15–30.IX.2019, Lang Yi. Non-paratype: 1♂ ( BIIC), China, Yunnan, Gaoligong Mountain , Gangfang, 98°46’ 11.35” N, 25°17 ‘57.26” E, elevation 2390m, Malaise trap, 30.VI–15.VII.2020, Lang Yi.

Description ( Fig. 1 View FIGURE 1 ). Holotype, ♀, length of body 3.0 mm, of fore wing 2.6 mm.

Head. Median length of head 0.5 × its width ( Fig. 1E View FIGURE 1 ). Occipital carina nearly complete, medially present weakly ( Fig. 1F View FIGURE 1 ). Antenna with 18 antennomeres (left one intact, right one 17 left); scapus robust, slightly wider 1.3 × wider and 4.7 × longer than pedicellus, F1 1.3 × F2, length of F1, F2, tenth and penultimate antennomeres 4.7, 3.5, 1.2, 1.7 × their width, respectively ( Fig. 1M View FIGURE 1 ). Eyes slightly protruding ( Fig. 1D, 1E View FIGURE 1 ), glabrous, its length 1.1 × length of temple in dorsal view ( Fig. 1E View FIGURE 1 ). Temples narrowed behind eyes ( Fig. 1E View FIGURE 1 ). Frons slightly concave medially, reticulate below, laterally reticulate and extending from anterior ocellus to antennal sockets. Vertex and temple reticulate. Ocelli small, arranged in regular triangle; POL:OD: OOL= 8:5:12. Length of face 0.6 × its width ( Fig. 1C View FIGURE 1 ); face protruding near antennal sockets, reticulate, medially convex reticulate, longitudinal ridge obvious and dorsal 1/4 smooth, almost complete to clypeus, obliquely rugose near dorsolateral corners ( Fig. 1C View FIGURE 1 ). Clypeus distinctly separated from face, evenly convex, sparsely punctulate and with obliquely stripe in apical 1/4, wider laterally; length of clypeus 0.6 × its width; clypeus truncate apico-medially ( Fig. 1C View FIGURE 1 ). Hypoclypeal depression small. Length of malar space 0.8 × basal width of mandible. Mandible long, upper tooth much longer than lower tooth, with deep basal depression.

Mesosoma. Length of mesosoma 1.7 × its height. Sides of pronotum smooth medially, remainder largely punctate ( Fig. 1I View FIGURE 1 ). Mesoscutum densely reticulate, slightly concave and more coarsely reticulate postero-medially ( Fig. 1J View FIGURE 1 ). Scutellum shallowly punctate, nearly smooth. Scutellar sulcus widely crenulate, with 6 areolae ( Fig. 1J View FIGURE 1 ). Mesopleuron convex medially and sparsely punctate, densely punctate-reticulate basally, precoxal sulcus indistinct but densely punctate ( Fig. 1I View FIGURE 1 ). Postpectal carina distinct ( Fig. 1G View FIGURE 1 ). Metapleuron slightly convex, punctate-reticulate, slightly smooth near middle coxa. Propodeum mostly densely reticulate, narrowly smooth basally, basal 1/4 of propodeal median carina distinct, transverse carina strong, connected with two lateral longitudinal ridges, dorsal part of propodeum 2.0 × longer than its posterior part, posterior part without longitudinal ridges ( Fig. 1J View FIGURE 1 ).

Wings. Fore wing: length of pterostigma 2.5 × its width; length of vein 1-R1 and SR1 not complete, r:3-SR =4:7; second submarginal cell large, roof-shaped; 2-SR, 2-M and m-cu not complete; vein 2-SR+M and r-m absent; vein m-cu postfurcal; vein cu-a distinctly postfurcal; cu-a not complete, 1-CU1:2-CU1=1:8 ( Fig. 1B View FIGURE 1 ). Hind wing: vein 2-SC+R longitudinal (= horizontal); vein r absent; M+CU:1-M=47:26 ( Fig. 1B View FIGURE 1 ).

Legs. Hind coxa smooth; hind femur robust, but fore and middle femora normal; length of hind femur 3.0 × its maximum width; hind tibia widened apically, slightly shorter than hind tarsus ( Fig. 1K View FIGURE 1 ); length of hind basitarsus 2.2 and 1.5 × inner hind tibial spur respectively, 0.2 × length of hind tarsus.

Metasoma. Surface of T1 and apical 1/2 of T3 longitudinally reticulate-rugose, T2 and basal 1/2 of T3 shallowly reticulate and with dense longitudinal rugae; length of T1:T2:T3=31:27:50; length of T1 and T2 0.8 × and 0.5 × their apical width, respectively, length of T3 1.1 × its basal width ( Fig. 1L View FIGURE 1 ); metasomal carapace less emarginate apico-ventrally in posterior view and with narrower lamella, with distinct depression above emargination and with conspicuous pale bristles ( Fig. 1H View FIGURE 1 ); ovipositor sheath comparatively long, its length 0.9× slightly shorter than hind basitarsus, slightly narrowed apically; ovipositor slender, extending beyond apex of metasoma, directed upwards apically, its exposed length 0.6× hind basitarsus ( Figs 1A, 1K View FIGURE 1 ).

Colour. Black; palpi white; mandible brownish-yellow, blackish-brown apically; basal two segments of antenna yellowish-brown, antenna light brown apically, darkened towards F1; tegula light brown; legs white-yellowish-brown; fore and middle legs: first to fourth tarsi light brownish-yellow, fore and middle femora light brown, tibia (except basal part brownish-yellow) and basitarsus yellowish-brown, the remaining whitish yellow; hind leg: femur, apical 3/4 of tibia, blackish-brown, first tarsi, and basitarsus yellowish-brown; the remaining cream; T2 and basal 1/2 of T3 yellowish-brown; wing membrane yellowish-brown with pale band below base of pterostigma; pterostigma light brown, yellowish-brown basally and apically and veins yellowish-brown.

Male ( Fig. 2 View FIGURE 2 ). Length of body 3.9 mm, of fore wing 3.6 mm ( Fig. 2A View FIGURE 2 ). Antennal 26 segments; scapus 3.1 × longer than pedicellus, tenth segments 1.9 × its width ( Fig. 2C View FIGURE 2 ). Eyes slightly protruding, glabrous, in dorsal view its length 1.3 × length of temple ( Fig. 2H View FIGURE 2 ). Clypeus distinctly separated from face, evenly convex, sparsely punctulate, with obliquely stripe in apical half ( Fig. 2F View FIGURE 2 ). Occipital carina incomplete, medially smooth and absent ( Fig. 2D View FIGURE 2 ). Fore wing ( Fig. 2B View FIGURE 2 ): length of pterostigma 3.3 × its width; r:3-SR =19:22, r-m present, unpigmented; vein 2-SR+M present; m-cu complete 1-CU1:2-CU1=5:69. Hind femur 3.0 × longer than wide ( Fig. 2L View FIGURE 2 ). Length of T1 and T2 1.5 × their apical width ( Fig. 2I View FIGURE 2 ). Metasomal carapace in lateral view evenly rounded apically ( Fig. 2J View FIGURE 2 ). T3 slightly emarginated apico-ventrally in posterior view and with narrower lamella, distinctly reticulate-rugose above emargination and with conspicuous pale bristles ( Fig. 2K, 2J View FIGURE 2 ).

Colour. Scapus brown, antenna darkened towards apex (pedicellus brownish-yellow, antenna darkened towards scapus); legs white-yellowish-brown; fore and middle femur, tibia (except its base), second to fourth of fore and middle tarsi light brownish-yellow, first tarsus and basitarsus light brown, the remaining whitish yellow; apical half of hind femur, tibia, first tarsi, and basitarsus blackish-brown. Wing membrane dark brown with pale band below base of pterostigma; pterostigma brown, veins of fore wing brown, veins of hind wing yellowish-brown.

Distribution. China ( Yunnan).

Biology. Unknown.

Etymology. The species is named after the location ( Yunnan province, southern China) where the type species was collected.

Discussion. We have collected two specimens provisionally included in S. yunnanensis , of which the holotype female differs from the male specimen. The male specimen is larger than the female; female antenna is more robust (which is what is expected) but darker coloured; male wing ( Fig. 2B View FIGURE 2 ) darker membrane and veins almost complete (female veins incomplete); precoxal sulcus of male ( Fig. 2E View FIGURE 2 ) distinct and concave, densely punctate (female: indistinct, not concave but densely punctate); propodeum of female densely crenulate (male: punctate antero-medially ( Fig. 2G View FIGURE 2 )); occipital carina of female nearly complete, medially weakly developed (male: area medially smooth and carina absent). Because of these differences, we have not designated the male as a paratype.