Keilbachia demissa Vilkamaa, Komarova & Hippa

Zhang, Su-Jiong, Huang, Junhao, Wu, Hong & Wang, Yi-ping, 2010, The genus Keilbachia Mohrig from Mainland China, with descriptions of two new species (Diptera, Sciaridae), ZooKeys 52, pp. 47-56 : 48

Keilbachia demissa Vilkamaa, Komarova & Hippa

Keilbachia demissa Vilkamaa, Komarova & Hippa, 2006: 45.

Diagnostic characters.

(Male). Body length 1.73-1.78 mm; wing length 1.47-1.49 mm.

Eye bridge 3-4 facets wide. Prefrons with 10-12 setae. Length/width of 4th flagellomere 2.17-2.41.

Anterior pronotum with 5-6 setae. Episternum 1 with 7-8 setae.

Length of spur/width of fore tibia 1.20-1.27. Length of metatibia /length of thorax 1.05-1.12.

c/w 0.62-0.64, R1/R 0.52-0.56, r-m with no setae.

The mesial megaseta on gonostylus long and slightly curved, basal body long. Tegmen simple, much broader subbasally than subapically.

Specimens examined.

China, Yunnan, Baoshan, Mts. Gaoligongshan, 24°49.729'N; 98°46.074'E, sweep-net, 11.V.2009. 6 males, Su-Jiong Zhang [SM00856, SM00859, SM00862, SM00869, SM00875, SM00881] (ZAFU); 1 male, Man-Man Wang [SM00888] (ZAFU).

Distribution.

China (Yunnan), Burma.

Biology.

Unknown.

Remarks.

This species is new to China, which was firstly described from Burma based on seven males. It is similar to Keilbachia scutica Vilkamaa, Komarova & Hippa, 2006 and Keilbachia flagrispina by the tegmen broadest subbasally ( Mohrig et al. 1999; Vilkamaa, Komarova and Hippa 2006). But it differs in having the mesial megaseta of the gonostylus much shorter and less strongly curved. The materials examined in China do not show distinct intraspecies variation, but the apical of gonostylus in the specimens SM00881 and SM00856 is more attenuated and curved than the other specimens.