S. Mahunka szerk.: Folia Entomologica Hungarica 61. (Budapest, 2000)

50 (49) Clypeus sharply and triangulary excised not deeper than half of its total length. Occipital furrows deep and clearly defined. Penis valve in Fig. 140. 8.0-9.0 mm docilus Benson 51 (46) Fore angle of penis valve with projection directed downward (Figs 141-152) 52 (53) Wings infuscate. Penis valve in Fig. 141. 8.0-9.0 mm. - Female unknown. Sporadic. Caucasus dathei Muche 53 (52) Wings hyaline 54 (55) Head including the face beneath the antennae clothed with dark or sooty hairs. Head usually metallic blue-black and the whole body with metallic reflections. 3rd tergite with large hair-patch extending over its middle third. Wings subinfuscate. Penis valve in Fig. 142. 8.5-10.0 mm anthracinus (Klug) 55 (54) Head with whitish or greyish-white hairs 56 (59) Large species, 10.0 mm or more 57 (58) 8th tergite with a large subtriangular glabrous and unpunctured area wide behind, where it occupies about one-third of the hind margin of the segment and narrowing in front. Penis valve in Fig. 143. 10.0-11.0 mm niger (Linné) 58 (57) 8th tergite without any subtriangular glabrous area. Penis valve in Fig. 144. 9.0-10.0 mm vulneratus Mocsáry 59 (56) Smaller species, less than 10 mm 60 (63) The pale membraneous part of the 8th tergite small, lunulate or subtriangular, but not reaching back to the middle of the segment. Smaller species (6.0-7.0 mm). Mesonotum shining, finely punctured. Head strongly narrowed behind the eyes with occipital furrows strong. Two similar species 61 (62) Penis valve in Fig. 145 sanguinicollis (Klug) 62 (61) Penis valve in Fig. 146 fumosus Stephens 63 (60) 8th tergite of abdomen without any white lunulate or subtriangular area 64 (69) Hind angle of penis valve acute or upper edge with excision (Figs 147-148, 152) 65 (66) Upper edge of penis valve with an excision. Penis valve in Fig. 148. 8.0-9.5 mm yokohamensis Rohwer 66 (65) Hind angle of penis valve acute without an excision (two species) 67 (68) Penis valve in Fig. 147. 8.0-9.0 mm alpinus Benson 68 (67) Penis valve in Fig. 152. 9.4 mm. - Female unknown. Only the holotype is known. Possible male of Dolerus affinis Cameron, dentipennis Wei et Nie 69 (64) Hind angle of penis valve rounded, upper edge without any excision (Figs 149-151, 153-177) 70 (71) Matt species. Abdominal tergites 4-7 densely clothed with pubescence. Penis valve in Fig. 151. 8.0-9.0 mm picipes (Klug) 71 (70) Shining species with slight metallic lustre 72 (73) Larger species, 8.5-9.5 mm. Penis valve in Fig. 149 nitens Zaddach 73 (72) Smaller species, 7.5 mm. Penis valve in Fig. 150. - Female unknown. Only known from Spain ibericus Chevin 74 (45) Fore angle of penis valve without a little hook or a long projection directed downward (Figs 153-178)