Nysson erythropoda Cameron

Kumar, P. Girish, 2021, A review of the genus Nysson Latreille (Hymenoptera: Crabronidae: Bembicinae: Nyssonini) from India, Records of the Zoological Survey of India 121 (2), pp. 269-277 : 271

2. Nysson erythropoda Cameron ( Figure 1–9 )

1890. Nysson erythropoda Cameron , 242, sex not indicated. Holotype or syntypes: India: Bengal : Barrackpore ( OXUM).

Diagnosis: Apical margin of clypeal lobe bidentate with two sharp teeth ( Figure 3 ); frontal carina high, sharp towards lower side, extending about half towards anterior ocellus; punctation of head coarser ( Figure 2 ); pronotal dorsum not ridged anteriorly; upper part of mesopleuron towards top strongly elevated to form a lamellate projection; propodeal enclosure with coarse longitudinal rugae dorsally; posterolateral propodeal tooth short, blunt; second submarginal cell of forewing as long as third submarginal cell on the lower side ( Figure 6 ); first two metasomal tergites with punctures separated by usually once or twice the diameter of a puncture; pygidium ( Figure 9 ) well developed with small continuous pits, apex narrowly rounded; last metasomal sternite with a median polished longitudinal weak groove, apex of this sternite narrowly roundly projected.

Colour: Black, integument dull, the following red: mandible except at apex, legs except base of coxae, and last metasomal segment; the following dull white to pale yellow: stripe on pronotal dorsum not interrupted in middle ( Figure 5 ), narrow band at base of scutellum ( Figure 5 ), first two metasomal terga apically with a narrow transverse stripe interrupted in middle and not extending to sides ( Figure 8 ); the following brown: scape, pedicel, and basal 5 flagellar segments ventrally, and tegulae. Vestiture silvery, short, and appressed, dense only on clypeus, lower half of frons towards inner eye margins, and propodeal dorsum laterad of propodeal enclosure. Wings ( Figure 6 & 7 ) slightly infumated, veins brown.

Size: female, 5.0–6.0 mm.

Male: Unknown.

Material examined: INDIA: Kerala, Kozhikode district, Nambikulam Hills (11° 30’ 14’’ N & 75° 50’ 23’’ E, 624 m), 1♀, 16.iv.2019, Coll. Sandra Lishikumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14473 . Tamil Nadu, Coimbatore district, Tholampalayam (11° 11’ 14’’ N & 76° 51’ 00’’ E, 399 m), 1♀, 4.i.2019, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14474 .

Distribution: India: Kerala (new record), Tamil Nadu (new record), West Bengal. Elsewhere: China ( Cameron, 1890; Rothney, 1903; Yasumatsu, 1942).

Figures

Figures 1-9. Nysson erythropoda Cameron. ♀. 1. Habitus, lateral view. 2. Head, face view. 3. Lower part of head, face view. 4. Antenna. 5. Head and mesosoma, dorsal view. 6. Fore wing. 7. Hind wing. 8. Metasoma, dorsal view. 9. Last metasomal tergite.