Leiodes circinipes (Rye, 1873)

Hoshina, Hideto, 2012, Review of the tribes Sogdini and Leiodini from Japan and North Chishima Islands. Part II. Genera Hydnobius and Leiodes (Coleoptera: Leiodidae), Acta Entomologica Musei Nationalis Pragae (suppl. 1) 52, pp. 1-168 : 34

Leiodes circinipes species group

Species included. Leiodes circinipes ( Rye, 1873) , L. juzoi sp. nov., L. yasudai sp. nov., L. yoshitakei sp. nov.

Diagnosis. Elytra unicolor or bicolored, with densely arranged large punctures between rows of punctures, and therefore superficially appearing not to bear rows of punctures ( Figs. 16E , 19E , 21D , 24E ); mesoventrite without distinct excavation between median carina and transverse carina ( Figs. 16F , 19F , 21E , 24F ); protarsi sexually dimorphic, male protarsomeres 2–4 expanded ( Figs. 17A , 20A , 22A , 25A ); male mesotibiae strongly protuberant at an interoapical corner, female mesotibiae simply quadrate interoapically ( Figs. 17C, 17D , 22C, 22D , 25C, 25D ); dorsal posteroapical projection of metafemur sexually dimorphic ( Figs. 22I, 22J ) or not ( Figs. 17H, 17I , 25I, 25J ); pubescence of metaventrite showing distinct sexual dimorphism ( Figs. 21F, 21G , 24G, 24H ) or not; aedeagus slender, without distinct large sclerites in inner sac ( Figs. 18A , 19F , 23A , 26A ); male abdominal sternite 8 strongly curved ( Figs. 18C , 20H , 23C , 26C ); female abdominal sternite 8 with a spiculum ventrale at a central point of anterior margin ( Figs. 18D , 23D , 26D ).

Representatives of the genus Leiodes occasionally show sexual dimorphism in the shape of the spines at the interoapical corner of the mesotibiae ( BARANOWSKI 1993). Among Leiodes from Japan and the North Chishima Islands, L. circinipes group is the only group having this character ( Table 1 ).

Differential diagnosis. The Leiodes circinipes species group can be separated from other species groups by having elytra with densely arranged large punctures between rows of punctures and having the male mesotibiae strongly protuberant at the interoapical corner.

Figures

Fig. 16. Leiodes circinipes (Rye, 1873).A – body, dorsal view; B – ditto, lateral view; C – dorsal color; D – antenna; E – elytral punctures; F – mesoventrite, lateral view. Scale I: 1 mm for A and B; II: 0.5 mm for D; III: 0.5 mm for F.

Fig. 19. Leiodes juzoi sp. nov.A – body, dorsal view; B – ditto, lateral view; C – dorsal color; D – antenna; E – elytral punctures; F – mesoventrite, lateral view; G – male metaventrite. Scale I: 1 mm for A and B; II: 0.5 mm for D; III: 0.5 mm for F; IV: 0.5 mm for G.

Fig. 21. Leiodes yasudai sp. nov. A – body, dorsal view; B – ditto, lateral view; C – antenna; D – elytral punctures; E – mesoventrite, lateral view; F – male metaventrite; G – female metaventrite. Scale I: 1 mm for A and B; II: 0.5 mm for C; III: 0.5 mm for E; IV: 0.5 mm for F and G.

Fig. 24. Leiodes yoshitakei sp. nov. A – body, dorsal view; B – ditto, lateral view; C – dorsal color; D – antenna; E – elytral punctures; F – mesoventrite, lateral view; G – male metaventrite; H – female metaventrite. Scale I: 1 mm for A and B; II: 0.5 mm for D; III: 0.5 mm for F; IV: 1 mm for G and H.

Fig. 17. Leiodes circinipes (Rye, 1873).A – male fore leg, ventral view; B – female fore leg, ventral view; C – male middle leg, ventral view; D – female middle leg, ventral view; E – male hind leg, ventral view; F – ditto; G – female hind leg, ventral view; H – male metafemur, dorsal view; I – female metafemur, dorsal view; J – male protibiae, dorsal view; K – female protibiae, dorsal view. Scale I: 0.5 mm for A–D; II: 0.5 mm for E; III: 0.5 mm for F and G; IV: 0.2 mm for H and I; V: 0.2 mm for J and K.

Fig. 20. Leiodes juzoi sp. nov. A – male fore leg, ventral view; B – male middle leg, ventral view; C – male hind leg, ventral view; D – male protibia, dorsal view; E – male metafemur, dorsal view; F – aedeagus, dorsal view; G – ditto, lateral view; H – male abdominal sternite 8. Scale I: 0.5 mm for A and B; II: 0.5 mm for C; III: 0.2 mm for D; IV: 0.2 mm for E; V: 0.5 mm for F and G; VI: 0.2 mm for H.

Fig. 22. Leiodes yasudai sp. nov. A – male fore leg, ventral view; B – female fore leg, ventral view; C – male middle leg, ventral view; D – female middle leg, ventral view; E – male hind leg, ventral view; F – female hind leg, ventral view; G –male protibia, dorsal view; H – female protibia, dorsal view; I – male metafemur, dorsal view; J – female metafemur, dorsal view. Scale I: 1 mm for A–D; II: 1 mm for E and F; III: 0.2 mm for G and H; IV: 0.5 mm for I and J.

Fig. 25. Leiodes yoshitakei sp. nov. A – male fore leg, ventral view; B – female fore leg, ventral view; C – male middle leg, ventral view; D – female middle leg, ventral view; E – male hind leg, ventral view; F – female hind leg, ventral view; G – male protibia, dorsal view; H – female protibia, dorsal view; I – male metafemur, dorsal view; J – female metafemur, dorsal view. Scale I: 0.5 mm for A–D; II: 0.5 mm for E and F; III: 0.2 mm for G and H; IV: 0.2 mm for I and J.

Fig. 18. Leiodes circinipes (Rye, 1873). A – aedeagus, dorsal view; B – ditto, lateral view; C – male abdominal sternite 8; D – female abdominal sternite 8; E – coxite and stylus. Scale I: 0.5 mm for A and B; II: 0.2 mm for C and D and 0.1 mm for E.

Fig. 23. Leiodes yasudai sp. nov. A – aedeagus, dorsal view; B – ditto, lateral view; C – male abdominal sternite 8; D – female abdominal sternite 8; E – coxite and stylus. Scale I: 0.5 mm for A and B; II: 0.2 mm for C and D, and 0.1 mm for E.

Fig. 26. Leiodes yoshitakei sp. nov.A – aedeagus, dorsal view; B – ditto, lateral view; C – male abdominal sternite 8; D – female abdominal sternite 8; E – coxite and stylus. Scale I: 0.5 mm for A and B; II: 0.2 mm for C and D and 0.1 mm for E.