Keilbachia arrecta, Vilkamaa, Pekka, Komarova, Lyudmila A. & Hippa, Heikki, 2006

Vilkamaa, Pekka, Komarova, Lyudmila A. & Hippa, Heikki, 2006, The genus Keilbachia Mohrig (Diptera: Sciaridae) in a biodiversity hot spot: new sympatric species from Kambaiti, Burma, Zootaxa 1123, pp. 39-55 : 48

Keilbachia arrecta sp. n.

Material studied. Holotype mal e ( NRM): N.E. BURMA ( MYANMAR), Kambaiti, 2000 m, 23.iv.1934, R. Malaise. Paratypes ( NRM): Same data as holotype but 7000 ft, 15.iv.1934, 1 ɗ; same data but 1800 m, 23, vi.1934, 1 ɗ; South Shan States, 40 km E of Taung­gyi, 29.ix.­13.x.1934, R. Malaise, 1 ɗ.

Description (male). Head ( Fig. 1 E). Eye bridge 2–3 facets wide. Prefrons with 7 setae, clypeus with 3 setae. Palpomere 1 with 1 seta. Length/width of flagellomere 4 of antenna 1.50. Thorax. Anterior pronotum with 2 setae, episternum 1 with 7 setae. Wing. Length 1.55 mm, width/length 0.45, c/w not measured, R1/R 0.60. r­m non­setose. Legs ( Fig. 4 D). Length of spur/width of front tibia 1.25. Abdomen. Sternite 8 with 21 setae. Hypopygium ( Fig. 6 A–C). Female: Unknown.

Discussion. Keilbachia arrecta is similar to K. indigena Mohrig , described from Papua New Guinea, by having the subapical megasetae of the gonostylus slender ( Fig. 6 ). Keilbachia arrecta differs from K. indigena by having the tegmen simpler, without distinct subbasal shoulders.

Figures

FIGURE 1. Eye bridge (A and B), frontal view, maxillary palp (C – F), dorsal view. A, Keilbachia aculeata sp. n. (holotype). B, K. mira sp. n. (paratype). C, K. demissa sp. n. (holotype). D, K. aculeata sp. n. (holotype). E, K. arrecta sp. n. (holotype). F, K. scutica sp. n. (holotype). Scale 0.05 mm.

FIGURE 4. Apex of front tibia, prolateral view. A, Keilbachia mira sp. n. (holotype). B, K. scutica sp. n. (holotype). C, K. aculeata sp. n. (holotype). D, K. arrecta sp. n. (holotype). Scale 0.05 mm.

FIGURE 6. Keilbachia arrecta sp. n. (holotype). Part of hypopygium (A) and gonostylus (B) and subapical megaseta and two ordinary setae of gonostylus (C), ventral view. Scale for A and B 0.10 mm, for C 0.05 mm.