Darnilia van Achterberg, 1989

Long, Khuat Dang & Achterberg, Cornelis Van, 2018, First record of the genus Darnilia van Achterberg, 1989 (Hymenoptera: Braconidae: Rogadinae) from Vietnam, with description of three new species, Zootaxa 4457 (3), pp. 455-464 : 456

Key to species of the genus Darnilia van Achterberg

1. Length of eye 3.5 × as long as temple in dorsal view; occipital carina complete, but medio-dorsally weakly developed; basal half of third metasomal tergite distinctly striate medially; hind wing vein 2-SC+R quadrate (Fig. 319 in Chen & He, 1997); Eastern-central China (Jiangsu)............................................ Darnilia chinensis Chen & He, 1997

- Length of eye 5.5–11.0 × as long as temple in dorsal view ( Figs 1 , 13 , 24 ); occipital carina interrupted medio-dorsally ( Figs 13 , 24 ); basal half of third metasomal tergite only finely granulate-coriaceous; hind wing vein 2-SC+R slightly longer than wide ( Fig. 22 )............................................................................................ 2

2. Eye large, length of eye approx. 11.0 × as long as temple in dorsal view (Fig. 42 in van Achterberg, 1989); first metasomal tergite with median carina in basal 0.3 of tergite (Fig. 44 in van Achterberg, 1989); vein cu-a of fore wing vertical; Indonesia (Sumatra)........................................................... Darnilia flagellaris van Achterberg, 1989

- Eye medium-sized, length of eye 4.5–6.0 × as long as temple in dorsal view ( Figs 13 , 24 ); median carina of first metasomal tergite absent ( Fig. 10 ) or complete ( Fig. 28 ) or at least in 0.4–0.5 basal of tergite ( Fig. 21 ); vein cu-a of fore wing oblique or vertical.............................................................................................. 3

3. OOL shorter than diameter of posterior ocellus ( Fig. 24 ); first metasomal tergite coarsely longitudinally striate ( Fig. 28 ); propodeum with triangular ivory patch ( Fig. 31 ); [first tergite subequal or slightly longer its apical width (1.1–1.2 x), its median carina complete ( Fig. 28 ) or nearly so; occipital carina narrowly interrupted medio-dorsally ( Fig. 24 ); vertex shiny and finely aciculate]; Vietnam............................................ Darnilia vietnamica Long & van Achterberg , sp. n.

- OOL equal to diameter of posterior ocellus ( Figs 1 , 13 ); first metasomal tergite without striae or with comparatively fine longitudinal striae ( Figs 10 , 21 ); propodeum variable, often largely brown or dark brown ( Figs 8 , 20 )....................... 4

4. Second metasomal tergite distinctly finely granulate ( Fig. 11 ); vein 1-M of hind wing 1.1–1.6 × vein M+CU; striae of vertex obsolescent or mixed with other sculpture, rather dull; first metasomal tergite 1.0–1.1 × its apical width, without median carina; first–third tergites without a trace of striae ( Figs 10, 11 ); Vietnam... Darnilia granulata Long & van Achterberg , sp. n.

- Second metasomal tergite finely granulate-coriaceous ( Fig. 21 ); vein 1-M of hind wing 1.7–2.2 × vein M+CU; striae of vertex distinct, shiny; first metasomal tergite 1.2–1.4 × its apical width, rarely subequal, its median carina usually present as a short carina, but sometimes absent or complete; surface of first-third tergites finely striate or only granulate-coriaceous ( Fig. 21 ); Vietnam..................................................... Darnilia intermedia Long & van Achterberg , sp. n.

Figures

FIGURES 1–11. Darnilia granulata sp. n. 1. Head (dorsal view), 2. Head (frontal view), 3. Head (lateral view), 4. Mesonotum, 5. Mesopleuron, 6. Hind third-fifth hind tarsus and tarsal claw, 7. Apical antennomeres, 8. Propodeum, 9. Fore wing, 10. First metasomal tergite, 11. Second-fourth metasomal tergites

FIGURES 13–22. Darnilia intermedia sp. n. 13. Head (dorsal view), 14. Head (frontal view), 15. Head (lateral view), 16. Mesonotum, 17. Hind fourth-fifth tarsus and tarsal claw, 18. Mesopleuron, 19. Hind tarsus, 20. Propodeum, 21. First-fourth metasomal tergites, 22. Hind wing

FIGURES 24–32. Darnilia vietnamica sp. n. 23. Habitus (holotype, female, lateral view, scale in mm), 25. Head (frontal view), 26. Head (lateral view), 27. Mesonotum, 28. First-fourth metasomal tergites, 29. Hind fourth-fifth tarsus and tarsal claw, 30. Hind wing, 31. Propodeum, 32. Fore wing