Phanerotoma nigricornis sp. nov.

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Fig. 21

Diagnosis

Face in lateral view with minute spiny protuberances (Fig. 21C); clypeus triangular, convex anteriorly and with some longitudinal sculpture (Fig. 21D); malar space long, 1.7× as long as basal width of mandible (Fig. 21D); POL about as long as diameter of posterior ocellus (Fig. 21B); hypopygium apically acute and with short and robust, up-curved triangular protuberance (Fig. 21J).

Etymology

Named after the black antennae, from the Latin ‘ niger ’ for ‘black’ and ‘ cornu ’ for ‘horn’.

Type material

Holotype CHINA – Sichuan • ♀; Wanglang National Nature Reserve; elev. 2500 m; 25 Jul. 2006; ZJUH No. 200800263.

Description

Female

MEASUREMENTS. Length of body 4.8 mm, of fore wing 4.3 mm.

COLOURATION. Black; veins M+CU, 1-M, 2-SR+M, 2-CU1, 3-CU1, m-cu and anteriorly 2-SR of fore wing, middle tibia with blister, and first and second tergites medially pale-yellow, hind trochanter, femur and tibia apically brown.

HEAD. Width 1.2 × median length in anterior view (Fig. 21D) and part of head above eye in lateral view 0.4× height of eye (Fig. 21C); antenna with 23 segments, five subapical antennal segments not moniliform (Fig. 21E), narrow and slender, area of stemmaticum mainly granulate; OOL:diameter of posterior ocellus: POL=30: 9:9; eye 0.9× temple in dorsal view (Fig. 21B); frons with longitudinal rugae medially, rugose laterally and with weak median ridge; vertex granulate-rugose and with satin sheen; temple largely striate and with satin sheen; face with oblique rugae laterally, transverse-rugose medially and with short median ridge; clypeus smooth, shiny and 0.8 × minimum width of face, intertentorial distance 1.8× minimum width between clypeus and eye, long erect setose and with 3 small teeth medio-ventrally (Fig. 21D); temple wide, in lateral view 1.1× as wide as temple (Fig. 21C), in anterior view its height 0.6 × minimum width of face; upper condyle of mandible far below lower level of eyes (Fig. 21D); malar space long, 1.7× as long as basal width of mandible; lower tooth of mandible 0.4× length of apical tooth, small and short (Fig. 21K).

MESOSOMA (Fig. 21G). Length 1.5× its width in lateral view; side of pronotum mainly rugose, but dorsally nearly smooth; mesoscutum densely rugose and rather shiny, densely setose; notauli hardly indicated; scutellar sulcus wide (Fig. 21G); scutellum triangular, flat, distinctly granulate-rugose and rather shiny; metanotum without median carina or tooth; propodeum coarsely reticulate-rugose, without latero-posterior tubercles, no transverse or median carinae.

WINGS. Fore wing 3.2 × as long as its maximum width; length of 1-R1 1.8× as long as pterostigma; r of fore wing 0.8× 3-SR; distance between 1-R1 and wing apex 0.4× 1-R1; 2-SR bent (Fig. 21F); SR1 nearly straight; 2-SR+M present; pterostigma large, parastigma small; 1-CU1 0.6× as long as vein 2-CU1, cu-a oblique and 0.6 × as long as 1-CU1; r: 3-SR: SR1= 18:22: 119; 2-SR: 3-SR: r-m= 49:22: 16; 2-M straight posteriorly, bent anteriorly (Fig. 21F).

LEGS (Fig. 21J). Hind femur slender and with satin sheen, 5.0 × as long as wide, hind tibia slender; middle tibia with large pale-yellow blister; hind coxa smooth and shiny.

METASOMA (Fig. 21G–H). Carapace elliptical in dorsal view, 1.9× as long as wide and 1.2 × as long as mesosoma; first and second tergites coarsely and densely longitudinally rugose; second suture narrow; third tergite 1.1× as long as second tergite and laterally weakly curved, in lateral view slightly convex posteriorly, in dorsal view convex medially, densely and semi-circularly rugose and rounded (Fig. 21H), lateral lamella wide, medio-apically deeply emarginate; ovipositor sheath narrow (Fig. 21G), with some long and erect setae; hypopygium apically acute and with up-curved short and robust triangular protuberance (Fig. 21G).

Male

Unknown.

Host

Unknown.

Distribution

China (Sichuan).