Curculio conjugalis (Faust)

Pelsue, Frank W. & Zhang, Runzhi, 2002, A Review Of The Genus Curculio From China With Descriptions Of New Taxa. Part III. The Curculio subfenestratus Voss Group (Curculionidae: Curculioninae: Curculionini), The Coleopterists Bulletin 56 (1), pp. 1-39 : 16

Curculio conjugalis (Faust)

Figs. 7–8

Balaninus conjugalis Faust 1882:278 .

Type. Amur: Holotype male ( SMTD).

Diagnosis. Elongate, oval; 6.6–7.3 mm (mean = 6.95, n = 7) in length; 3.3–3.8 mm (mean = 3.55, n = 7) in width; derm fuscous; rostrum almost straight from base to antennal insertion, then abruptly arced to apex; distance from base of eye to antennal insertion 1.8 mm in male, 1.5 mm in female; pronotal disc with feeble indication of median lighter color vitta, with two lateral vittae; elytra, with confused fascia of fuscous scales on background of light brown scales; femora with ventral beard of elongate seta­like scales, as long as tooth; metauncus medium with acute apex. Genitalia: Diagram of male aedeagus can be found in Morimoto (1962).

Plant Associations. Fagaceae Morimoto (1960) .

Distribution. Amur (river boundry between formerly Manchuria now China and Russia); Japan; Korea; China, Kiautschaun (not found on recent maps of China, but labeled in Faust collection as collected in 1915, collector unknown); Russia, Maritime territories (Ter­Minassian 1956).

Remarks. This species closely resembles Curculio beverlyae Pelsue and Zhang (2000 a) . Can be separated from that species by aedeagus, ventral beard on profemur, medium­sized acute metauncus and distance from base of male eye to antennal insertion of 1.8 mm compared with 1.5 mm in C. beverlyae .

Figures

Figs. 7–8. Curculio conjugalis (Faust). Male, habitus dorsal and lateral views. Figs. 9–10. Curculio interpositus Voss. Male, habitus dorsal and lateral views. Figs. 11–12. Curculio convexus (Roelofs). Male, habitus dorsal and lateral views. Various scales.