Zombrus Marshall, 1897

Long, Khuat Dang, Achterberg, Cornelis Van & Hoa, Dang Thi, 2018, New record of the genus Zombrus Marshall, 1897 (Hymenoptera: Braconidae: Doryctinae), with description of three new species from Vietnam, Zootaxa 4420 (2), pp. 279-291 : 280-281

Key to Oriental and Palaearctic species of Zombrus Marshall

1 Occipital carina at least latero-dorsally present ( Figs 23, 24 , 44 ); bristles of fourth hind tarsal segment 0.5–0.6 × as long as hind telotarsus; subgenus Zombrus Marshall, 1897 .............................................................. 7 2

- Occipital carina completely absent ( Fig. 11 ); bristles of fourth hind tarsal segment approx. 0.4 × as long as hind telotarsus; [hind coxa and femur with dense and long setae; metasomal tergites 4-6 shiny and entirely smooth ( Figs 8 , 18 )]; subgenus Trichiobracon Cameron, 1905 ............................................................................. 7

2 Legs and palpi black or dark reddish brown; head and mesosoma with long and conspicuous setae; frons with small medial protuberance; middle tarsus not or slightly shorter than tibia; face sparsely punctate to reticulate-punctate; [long setae of hind tibia erect and distinctly longer than maximum width of tibia]........................... Z. bicolor ( Enderlein, 1912)

- Legs and palpi pale reddish brown to brownish yellow, but hind tarsus sometimes darkened; head and mesosoma with medium-sized and rather inconspicuous setae; frons with medium-sized medial protuberance; middle tarsus shorter than tibia; face rugose-punctate, rugulose-punctate or reticulate-punctate; [setae of hind tibia variable, frequently medium-sized and about equal to maximum width of tibia].................................................................... 3

3 Second and third metasomal tergites laterally and a transverse patch of fourth–sixth tergites black; pronotal side largely coarsely punctate; apical half of fourth metasomal tergite striate; hind tibia with erect and long setae; [base of fore wing with reddish veins]............................................................ Z. nigrobalteatus (Cameron, 1906)

- Metasomal tergites entirely brownish yellow; pronotal side largely rugose-crenulate; apical half of fourth metasomal tergite largely smooth; hind tibia with slanted and medium-sized setae................................................. 4

4 Veins of basal third of fore wing dark brown ( Figs 22 , 29 ); length of eye in dorsal view approx. twice as long as temple; fourth–sixth metasomal tergites finely punctate basally............................... Z. tricoloricorpus Long , sp. n.

- Veins of basal third of fore wing yellowish ( Fig. 36 ); length of eye in dorsal view 1.2–1.6 × temple ( Fig. 44 ); fourth–sixth metasomal tergites smooth basally........................................................................ 5

5 Pterostigma dark brown basally; length of eye in dorsal view approx. 1.6 × temple; third antennal segment 1.3 × longer than fourth segment; [hind femur 2.7 × longer than its maximum width; marginal cell of hind wing without transverse vein]................................................................................. Z. sikkimensis Enderlein, 1920

- Pterostigma yellow basally or subbasally; length of eye in dorsal view 1.2–1.4 × temple; third antennal segment 1.1 × longer than fourth segment.................................................................................... 6

6 Vein m-cu of hind wing rectangularly angled with vein 2-CU and with short stub at base of vein 2-CU; face coarsely punctate with some rugae laterally; hind femur 2.3–2.6 × longer than its maximum width............. Z. anisopus Marshall, 1897

- Vein m-cu of hind wing gradually merging into vein 2-CU and no posterior stub ( Fig. 37 ); face largely coarsely reticulatepunctate, remotely punctate laterally ( Fig. 43 ); hind femur 2.5–2.8 × longer than its maximum width ( Fig. 41 )....................................................................................... Z. pallidiventris Cameron, 1910

7 Pterostigma mainly yellow, at most faintly infuscate basally; apical half of fore wing entirely yellowish; lower part of face, first and second metasomal tergites laterally pale yellow; body length approx. 18.5 mm ....... Z. flavipennis (Brullé, 1846)

- Pterostigma dark brown ( Figs 7 , 19 ); apical half of fore wing mainly or entirely dark brown, at most with pair of yellowish spots; face and base of metasoma brownish yellow or reddish brown; body length 8–14 mm .......................... 8

8 Veins of basal half of fore wing brown ( Figs 1, 7 ); metasoma dark brown ( Figs 1, 8 ); hind tibia with long erect setae dorsally, setae twice as long as its maximum width of tibia; [vein M+CU of hind wing 1.2 × as long as vein 1-M].............................................................................................. Z. bicoloricorpus Long , sp. n.

- Veins of basal half of fore wing yellow ( Figs 10, 19 ); metasoma brownish yellow ( Fig. 18 ); hind tibia with medium-sized slanted setae, setae as long as its maximum width of tibia...................................................... 9

9 Vein M+CU of hind wing approx. 1.5 × as long as vein 1-M ( Fig. 20 ); apical half of fore wing with 3 pale patches ( Fig. 19 ); vein 3-SR of fore wing approx. 1.6 × longer than vein 2-SR; mesoscutum with pair of longitudinal carinae posteriorly ( Fig. 14 )............................................................... Z. flavicorpus Long & van Achterberg , sp. n.

- Vein M+CU of hind wing approx. 1.2 × as long as vein 1-M; apical half of fore wing entirely dark brown; vein 3-SR of fore wing 1.2–1.3 × longer than vein 2-SR; mesoscutum with one medio-longitudinal carina posteriorly.................................................................................................. Z. striolatus (Szépligeti, 1902)

Figures

FIGURE 22. Zombrus tricoloricorpus sp. n., holotype, female (habitus, lateral view).

FIGURES 23–32. Zombrus tricoloricorpus sp. n., holotype, female, 23. Head (dorsal view), 24. Head (lateral view), 25. Head (anterior view), 26. Mesonotum, 27. Mesopleuron, 28. Tergites 1+2+3+4, 29. Fore and hind wings, 30. Fore tibia (inner side), 31. Hind coxa, 32. Propodeum.

FIGURES 36–47. Zombrus pallidiventris Cameron, female, 37. Fore wing, 38. Hind wing, 39. Mesosoma (lateral view), 40. Mesosoma (dorsal view), 41. Metasomal tergites 1+2+3, 42. Hind leg, 42. Apical antennal segments, 43. Head (anterior view), 44. Head (dorsal view), 45. Head (lateral view), 46. Basal antennal segments, 47. Hind femur.

FIGURES 11–21. Zombrus flavicorpus sp. n., holotype, female, 11. Head (dorsal view), 12. Head (anterior view), 13. Head (lateral view), 14. Mesonotum, 15. Mesopleuron, 16. Hind coxa, 17. Propodeum, 18. Metasomal tergites 1+2+3, 19. Fore wing, 20. Hind wing, 21. Fore tibia (inner side).

FIGURES 2–9. Zombrus bicoloricorpus, sp. n., holotype, female, 2. Head (dorsal view), 3. Head (lateral view), 4. Propodeum, 5. Mesonotum, 6. Mesopleuron, 7. Fore and hind wings, 8. Metasomal tergites 1+2+3, 9. Fore tibia (inner side).