Elmomorphus, Sharp, 1888

Kodada, Ján, Selnekovič, Dávid, Jäch, Manfred A., Goffová, Katarína & Vďačný, Peter, 2021, Taxonomic revision of the genus Elmomorphus Sharp, 1888 I. Japanese and Korean species (Coleoptera: Dryopidae), European Journal of Taxonomy 758 (1), pp. 97-121 : 117

Key to the adults of the species of Elmomorphus from Japan and Korea

1. Male labrum with several long, rather widely spaced setae arranged in a more or less distinct transverse row ( Fig. 6A ); similar, moderately longer setae arranged in small clusters on prosternal process and metaventrite ( Fig. 6C, E ), and on apex of ventrite 5 ( Fig. 7D ); long setae on labrum maximally half as long as interocular distance, most elongate ventral setae moderately shorter than those on labrum. Parameres in apical half slightly curved ventrad, nearly straight ( Fig. 8B ). Female: bursa copulatrix with a cluster of minute spines on each side in distal portions ( Fig. 9D ) ................ .................................................................................................................. E. brevicornis Sharp, 1888

– Male labrum with numerous conspicuously long, closely arranged setae in a transverse row ( Fig. 6B ); similar setae in extensive clusters on prosternal process, metaventrite ( Fig. 6D, F ), and on apex of ventrite 5 ( Fig. 7E ); most elongate setae on labrum about ⅔ of interocular distance, longest ventral setae moderately longer than interocular distance. Parameres in apical half strongly curved ( Fig. 8D ). Female: bursa copulatrix with cluster of minute spines and with several larger sclerites scattered over its proximal portion ( Fig. 9E ) ...................................... E. amamiensis Nomura, 1959

Figures

Fig. 6. Details of the male head and ventral portions. A, C, E. Elmomorphus brevicornis Sharp, 1888 (JKCB). B, D, F. Elmomorphus amamiensis Nomura, 1959 (JKCB). A–B. Head. C–D. Ventral view of the prothorax. E–F. Ventral view of the metathorax. Arrows show the position of setal clusters.

Fig. 7. A–D. Elmomorphus brevicornis Sharp, 1888, ♂ (JKCB). A. Foreclaws. B. Dorsal plastron scales. C. Ventral plastron scales. D. Detail on ventrite 5. E. Elmomorphus amamiensis Nomura, 1959, detail on male ventrite 5 (JKCB).

Fig. 8. Male terminalia.A–B, E–F. Elmomorphus brevicornis Sharp, 1888(JKCB). A. Aedeagus, ventral aspect. B. Ibidem, lateral aspect. C–D. Elmomorphus amamiensis Nomura, 1959 (JKCB). C. Aedeagus, ventral aspect. D. Ibidem, lateral aspect. E. Sternite VIII. F. Sternite IX. Scale bar = 0.1 mm.

Fig. 9. Female terminalia. A–B, D. Elmomorphus brevicornis Sharp, 1888 (JKCB). A. Sternite VIII. B. Ovipositor. C, E. Elmomorphus amamiensis Nomura, 1959 (JKCB). C. Ovipositor. D. Bursa copulatrix. E. Bursa copulatrix. Scale bars = 0.1 mm.