Calobrachium luangum Gobbi & Azevedo, 2016

Gobbi, Fernanda T. & Azevedo, Celso O., 2016, Revision of Calobrachium Gobbi & Azevedo, gen. nov. (Hymenoptera, Bethylidae), with description of seven new Oriental species, Zootaxa 4083 (2), pp. 221-238 : 231

Calobrachium luangum Gobbi & Azevedo , sp. nov.

( Figs 2 , 11 , 19 , 24 , 34, 35 )

Description. MALE. Body length 2.8 mm. LFW 2.0 mm. Color. Head black; mandible, clypeus, antenna, mesosoma and metasoma castaneous; legs light castaneous; wings subhyaline.

Head ( Fig. 2 ). Mandible with three upper teeth small, lower one largest. Apical margin of median clypeal lobe straight. Flagellomeres long; four first antennomeres in ratio about 14:4:11:8; pedicel 1.0 × as long as wide; F1 very long, 2.8 × as long as wide; F9 1.8 × as long as wide; flagellar setae suberect and erect. Frontal carina slightly conspicuous. WH 0.9 × LH. WF 0.7 × WH. WF 1.4 × HE. Eye small, very salient. Ocellus small. DAO 0.2 × WF. Frontal angle of ocellar triangle acute. WOT 2.3 × DAO. OOL 1.4 × WOT. Distance of posterior ocellus to vertex crest 1.3 × DAO. VOL 1.1 × HE. Temple strongly divergent. Vertex straight.

Mesosoma ( Figs 11 , 19 ). Pronotal disc densely punctate, mesonotum sparsely punctate. Pronotal collar short. Pronotal declivity low. Pronotal disc 0.5 × as long as wide; anterior region 0.4× as long as wide; quadrangular. Notauli conspicuous, occupying one third of mesoscutum. Scutellar furrow wide, deep, slightly scrobiculate; corner straight. Median region of scutellum coriaceous, punctate. Median region of metanotum short, wide; inner foveae of metanotal furrow not delimited. Propodeal disc 1.2 × as long as wide; 0.4 × as high as long; areolate; lateral carina conspicuous; propodeal declivity slightly areolate; side of propodeum slightly areolate. Mesopleuron anteriorly slightly rugulose, posteriorly slightly areolate; transversal furrow conspicuous, strongly scrobiculate. Discoidal vein strongly pigmented.

Metasoma. Petiole long, 0.4 × as long as propodeal disc. Hypopygium ( Fig. 24 ) 1.0 × as long as wide; posterior margin slightly trilobate; median lobe convex, wide; posterior projection short; lateral lobe straight; lateral margin slightly convex; anterior pigmented line strongly pigmented, slender; lateral stalk absent. Genitalia ( Figs 33–34 ): aedeagus strongly mesoconvex, apical region ventrad with lobe long; dorsal paramere about as long as ventral paramere, wider as ventral paramere, inner margin sinuous, outer margin slightly convex; membranous region of basiparamere with apical corner strongly developed; sclerite on volsella base absent.

FEMALE unknown.

Material examined. Holotype, ♂. THAILAND, Chiang Mai, Doi Inthanon NP, checkpoint 2, 18°31.559’N 98°29.941’E, 1700 m, MT, 15–22.VII.2006, Y. Areeluck leg., T73 ( QSBG).

Distribution. Thailand (Chiang Mai).

Remarks. See remarks of C. lepidum comb. nov.

Figures

FIGURES 1 – 9. Head in dorsal view. 1. Calobrachium lepidum comb. nov.. 2. C. luangum sp. nov. 3. C. miticum sp. nov. 4 – 5. C. pongum sp. nov. 6. C. salum sp. nov. 7. C. thanum sp. nov. 8. C. trilinum sp. nov. 9. C. vancum sp. nov. Scale bar = 300 µm.

FIGURES 10 – 18. Mesosoma in dorsal view. 10. Calobrachium lepidum comb. nov.. 11. C. luangum sp. nov. 12. C. miticum sp. nov. 13. C. pongum sp. nov. 14. C. salum sp. nov. 15. C. thanum sp. nov. 16. C. trilinum sp. nov. 17. C. vancum sp. nov. 18. Mesosoma in ventral view. C. miticum sp. nov. Scale bar = 300 µm.

FIGURES 19 – 22. Mesosoma in lateral view. 19. Calobrachium luangum sp. nov. 20. C. pongum sp. nov. 21. C. thanum sp. nov. 22. Fore and hind wing. C. salum sp. nov. Scale bar = 300 µm.

FIGURES 23 – 30. Hypopygium in dorsal view. 23. Calobrachium lepidum comb. nov.. 24. C. luangum sp. nov. 25. C. miticum sp. nov. 26. C. pongum sp. nov. 27. C. salum sp. nov. 28. C. thanum sp. nov. 29. C. trilinum sp. nov. 30. C. vancum sp. nov. Scale bar = 250 µm.

FIGURES 31 – 38. Male genitalia. 31 – 33. Calobrachium lepidum comb. nov.. 31. Dorsal view. 32. Ventral view. 33. Lateral view. 34 – 35. C. luangum sp. nov. 34. Dorsal view. 35. Ventral view. 36 – 37. C. miticum sp. nov. 36. Dorsal view. 37. Ventral view. 38. C. pongum sp. nov. Dorsal view. Scale bar = 250 µm.