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

113(114) Penis valve in Fig. 175. 7.5-9.0 mm nonultimus Zhelochovtsev 114(113) Penis valve different 115 (116) Penis valve in Fig. 176. 6.5 mm. (This name is a junior homonym of D. shanghaiensis Haris, see Notes) shanghaiensis Wei 116(115) Abdominal tergite 8 with large subtriangular glabrous and unpunctured area. Clypeus slightly emarginated to a depth at most one-third of its total length. Penis valve in Fig. 177. 9.0-10.0 mm gibbosus Hartig Table H 1 (14) Abdomen at least from the 4th tergite on with general coriaceous sculpture usually strong, but very fine in D. yukonensis Norton 2 (7) Mainly black insects 3 (4) Larger, robust species, 10.0-12.0 mm. Thorax, mouthparts, legs richly coloured with brownish-yellow spots variator Enslin 4 (3) Body entirely black 5 (6) Middle and the fore lobes of mesonotum as well as the middle of the scutellum covered each with a large shining impunctate or feebly punctate area. Penis valve as in Fig. 179. 8.0-9.5 mm pachycerus Hartig 6 (5) Entirely black except the front and middle knees. Head contracted behind the eyes in dorsal aspect. Larger species: 9.0 - 10.0 mm. Penis valve as in Fig. 180. (Black colour variation rarely occurs in D. pratensis (Linné) and D. yukonensis Norton, if so check penis valve: Figs 182-183.) gessneri Ed. André 7 (2) Abdomen with a red crossband 8 (9) Scutellum very densely, irregularly and coarsely punctured all over, the coarser punctures much larger than those in the middle of the lateral lobes of mesonotum; and on these lobes too the punctures are very irregular, often confluent at the sides and coarser in the middle, where they are widely separated. Penis valve in Fig. 181. 8.0-10.0 mm bimaculatus (Geoffroy) 9 (8) Scutellum with regular punctures thinning out in front, where there are shining interspaces. In size, the punctures are scacerly larger than those in the middle of the mesonotal lobes. On the lateral lobes of the mesonotum, the punctures are small, more evenly spread and separated from each other 10 (11) Smaller species, 6.5-8.0 mm. Wings hyaline throughout. Abdomen with shining areas between the patches of fine surface sculpture without definite coarse punctures on the first and following tergites. Penis valve in Fig. 182 yukonensis Norton 11(10) Larger species, 10.0-11.0 mm 12 (13) Very variable in colour. Usually red-girdled and with all legs marked with red, but if the abdomen is entirely black then the legs are also. Head not contracted behind the eyes in dorsal view. Penis valve in Fig. 183 pratensis (Linné) 13 (12) Smaller species, 9.0-10.0 mm. Head contracted behind the eyes in dorsal aspect. Penis valve in Fig. 180. (Red colour variation the former var. labiosus (Konow).) gessneri Ed. André