The genus Keilbachia Mohrig (Diptera: Sciaridae) in a biodiversity hot spot: new sympatric species from Kambaiti, Burma Author Vilkamaa, Pekka Author Komarova, Lyudmila A. Author Hippa, Heikki text Zootaxa 2006 1123 39 55 journal article 50761 10.5281/zenodo.171760 80bfa1bc-37d4-4ba0-8fc9-8f3fc0139390 1175­5326 171760 Keilbachia tenuicula sp. n. Material studied. Holotype mal e ( NRM ): N.E. BURMA ( MYANMAR ), Kambaiti, 2000 m , 24.iv.1934 , R. Malaise. Description (male). Head (Fig. 2D). Eye bridge 2–3 facets wide. Prefrons with 16 setae, clypeus with 9 setae. Palpomere 1 with 1 seta. Length/width of flagellomere 4 of antenna 1.30. Thorax . Anterior pronotum with 5 setae, episternum 1 with 7 setae. Wing . Length 1.6 mm , width/length 0.40, c/ w 0.65 , R1/R 0.65. r­m non­setose. Legs ( Fig. 3 A). Length of spur/width of front tibia 1.25. Abdomen . Sternite 8 with 4 setae. Hypopygium ( Fig. 8 A, B). Female: Unknown. Discussion. Keilbachia tenuicula is similar to K. mira by having the basal body of the mesial megaseta of the gonostylus very long and without apical modifications. Keilbachia tenuicula differs from K. mira by having a deep sensory pit on the maxillary palp (shallow in K. mira ; Fig. 2A, D) and a deeper, more strongly bordered patch of modified setae on the front tibia ( Figs. 3 A, 4A) and by having the subapical gonostylar megasetae placed farther apart ( Fig. 8 ). Keilbachia tenuicula also resembles the Palaearctic K. ferrata (Hippa & Vilkamaa) with regard to the latter character, but differs from it by the stouter subapical megasetae, more slender gonostylus, and the strikingly longer basal body of the mesial megaseta.