Olophrum consimile ( Gyllenhal, 1810 )

Olophrum consimile ( Gyllenhal, 1810) View in CoL

Omalium consimile Gyllenhal, 1810: 199 View in CoL .

Omalium marginatum Kirby, 1837: 89 View in CoL .

Olophrum alpestre Erichson, 1840: 867 View in CoL .

Olophrum parvulum Mäklin, 1853: 195 View in CoL .

Olophrum marginatum Mäklin, 1853: 196 View in CoL .

Olophrum minor J. Sahlberg, 1876: 213 View in CoL .

Olophrum limbatum Mäklin, 1878: 23 View in CoL .

Olophrum parvipenne Scheerpeltz, 1929: 134 View in CoL .

Olophrum recticolle Scheerpeltz, 1929: 141 View in CoL .

Olophrum curtipenne Scheerpeltz, 1929: 143 View in CoL .

Olophrum bernhauerianum Scheerpeltz, 1929: 146 View in CoL .

Olophrum marginicolle Blair, 1933: 95 View in CoL .

Olophrum yasudai Watanabe, 1990: 139 View in CoL syn. n.

Other notes and references see in Herman (2001).

Material examined. JAPAN: HOKKAIDO: 1 ♀: Kushiro marsh, between Horo and Oshima rivers. 31.07.1991. A. Smetana leg. ( CNC) .

Remarks. Olophrum consimile is one of the common species distributed in the Holarctic Region ( Herman 2001). Olophrum yasudai was originally described from Kurodake Mt., Hokkaido. Dr. Watanabe compared it with O. consimile , and noted that it can be distinguished by “… the body narrower, the punctures on pronotum less dense, the punctures of elytra sparser and not arranged in longitudinal rows”. Based on the original description and illustration of the body (Fig. 141 in Watanabe (1990)) and the aedeagus (Figs 142–143 in Watanabe (1990)), this species is conspecific with O. consimile . Thus, it was synonymyzed with the latter species. This species is variable in body length, the shape of the significantly convex pronotum (elongate or slightly transverse), features of the punctation of the forebody (sparser or denser, larger or finer) and the shape of the apical portions of the parameres. It should be noted that the studied female from Hokkaido has a more transverse pronotum with sparser and larger punctation than that in Fig. 141 ( Watanabe 1990).