Lathrobium (Lathrobium) spissicorne Casey, 1905

Lathrobium spissicorne Casey, 1905: 83.

Type material.

Lectotype Lathrobium spissicorne Casey, herein designated (USNM): "Mass / CASEY bequest 1925 / [red] TYPE USNM 38111 / [handwritten] Lathrobium spissicorne / Lectotype Lathrobium spissicorne Casey Desg. Haberski & Caterino."

Other material.

USA: Massachusetts: ‘Mass’ (1, USNM); ‘Mass’ (1, MCZ) . Michigan: Wayne Co.: Detroit, Oct (1, USNM) .

Diagnosis.

Lathrobium spissicorne can be distinguished from all other Nearctic Lathrobium by unique primary and secondary sexual characters. The male sternite VIII has a scalloped emargination, and the dorsal plate of the aedeagus bends over the top of the ventral process. In females, the inner margin of the gonocoxites is broad and distinctively arched.

Description.

Body length 7 mm; body coloration dark red throughout. Gular sutures parallel, widely separate; antennomeres V-VII as wide as long. Elytra longer than pronotum. Female sternite VIII weakly oblong. Genitalia as in Fig. 51.

Distribution.

Canada: NB, ON, QC, PE (Bousquet et al. 2013). USA: MA, MI.