Dolichocephala Macquart of Thailand (Diptera: Empididae: Clinocerinae) Author Sinclair, Bradley J. Author Plant, Adrian R. text Zootaxa 2017 2017-11-30 4358 3 551 568 journal article 31264 10.11646/zootaxa.4358.3.9 c0651e3d-6fd0-44c8-986f-264a88eb14df 1175-5326 1068858 2BFB0521-BEFE-41F9-8AD0-3A7E354912A7 Key to Thailand species of Dolichocephala 1 Wing infuscate only, without white spots or irrorations; auxiliary crossvein absent................ D. immaculata sp. nov. - Wing with white spots or irrorations (Figs 8–16); auxiliary crossvein present...................................... 2 2 Pleura mostly yellow except for dorsal margin adjacent to scutum (Fig. 8); distiphallus with balloon-like inflated membranous sac beneath sclerotized cap ( Fig. 1 )........................................................ D. bicolor sp. nov. - Pleura dark brown, concolourous with scutum (Fig. 10); distiphallus without balloon-like membranous sac.............. 3 3 R2+3 ending in costa proximal to branching of radial fork (Figs 11, 12, 14)........................................ 4 - R2+3 ending in costa distal to branching of radial fork (Fig. 16).................................................. 6 4 R4 straight and divergent from R5 throughout its length; apical spot in cell r2+3 large, expanding apex of cell (Fig. 11); phallus with anvil-shaped distiphallus ( Fig. 4 )........................................................ D. incus sp. nov. - R4 sinuous, curved around spot in cell r4; apical spot in cell r2+3 not expanding apex of cell (Figs 12, 14); phallus with distiphal- lus not anvil-shaped ( Fig. 5 ), or without distiphallus ( Fig. 6 ).................................................... 5 5 Cellsm1, m2 and m4 with one spot each (Fig. 14); phallus very stout and nearly straight, apex without articulated distiphallus ( Fig. 6 )............................................................................... D. srisukai sp. nov. - Cells m1, m2 and m4 with at least two spots each (Fig. 12); phallus slender and strongly arched, apex with articulated distiphal- lus ( Fig. 5 ).......................................................................... D. longicerca sp. nov. 6 Clasping cercus strongly tapered apically with narrow tip; apex of distiphallus broadly inflated laterally ( Fig. 7 )........................................................................................... D. thailandensis sp. nov. - Clasping cercus L-shaped, not tapered apically with broadly rounded tip; apex of distiphallus not inflated laterally ( Fig. 2 )........................................................................................ D. curvata sp. nov.