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

9 (10) Head behind the eyes converging. Occipital furrows are very short, sometimes as short as a puncture. Prothorax, mesonotum (except scutellum) and abdomen (except sawsheath) yellow. Sawsheath narrow in dorsal aspect with straight lateral setae near apex (Fig. 114). 4th—6th serrulae in Fig. 46. 9.0-10.5 mm. Sporadic European species madidus Klug 10 (9) Head behind the eyes parallel, sometimes slightly dilated. Occipital furrows are deep and long. Thorax mainly red. Wings infuscate. Legs black. Abdomen red, sometimes the sawsheath black. 9.5-11.0 mm 11 (12) Apical setae of the sawsheath are straight as in Fig. 114. - Rare C. and E. European species uliginosus Klug 12 (11) Apical setae of the sawsheath sometimes curved at their apices (Fig. 120). (Female not really differentiable from that of D. uliginosus (Klug).) 4th-6th serrulae in Fig. 47. The different distribution (i.e. Europe or Japan) of the two species may be helpful in separating the females. - Frequent insect pest in Japan harukawai Waterston 13 (4) Lateral lobes of mesonotum with at least the posterior two-thirds black 14 (15) First abdominal tergite and frequently the scutellum red. Hind tibial spurs slender, more than 5 times longer than their basal breadth. Large species, 9.5-10.5 mm long, with thorax above (except side lobes and front of fore lobes of mesonotum) and the whole abdomen yellow. (Dark colour variation: var. aemulus (Konow) has its whole thorax black.) Sawsheath in Fig. 115. 4th—6th serrulae in Fig. 48. - Sporadic European species triplicatus Klug 15 (14) Scutellum and 1st abdominal tergite black. Hind tibial spurs broadened basally so that they are only 3-4 times longer than their basal breadth 16 (17) Larger species, 11.0-13.0 mmm. Head and antennae black. Prothorax, tegulae, fore lobes of mesonotum red. The other parts of the thorax black. Sometimes the anterior half of the lateral lobes red. Head behind the eyes parallel. Clypeus triangulary excised. Mesonotum shining but densely, scutellum little less densely punctured, shining. Mesopleuron strongly and distinctly punctured. Wings infuscate. Apical setae of sawsheath are longer on the outer side and shorter on the inner side (Fig. 118). 4th-6th serrulae in Fig. 50. - Sporadic. Southern China cameroni Kirby 17 (16) Smaller species, 9.0-10.5 mm. Setae of sawsheath different 18 (19) Anterior part of the lateral lobes red (sometimes entirely red except where they meet). Sawsheath in dorsal aspect wide (more than twice the width of a cercus), with slightly curved lateral setae (Fig. 117). 9.0-10.5 mm. - Sporadic European species anticus Klug 19 (18) Lateral lobes of mesonotum entirely black. Sawsheath much narrower with almost straight lateral setae (Fig. 116). 9.0-10.0 mm. 4th-6th serrulae in Fig. 51. - Sporadic European species ferrugatus Lepeletier 20 (1) Abdomen with a red band. First and 7th-9th abdominal tergites black. Thorax entirely black 21 (22) Larger species, 10.0 mm. Body mainly black, abdominal tergites 3-6 and hind part of 2 red. Head above densely and roughly punctured. Mesonotum with