Lathrobium (Lathrobium) simile LeConte, 1863

Haberski, Adam & Caterino, Michael S., 2024, A review of Nearctic Lathrobium (Coleoptera, Staphylinidae), with revision and descriptions of new flightless species from the mountains of the southeastern U. S., ZooKeys 1198, pp. 193-277 : 193

Lathrobium (Lathrobium) simile LeConte, 1863

Lathrobium simile LeConte, 1863: 43.

Type material.

Lectotype, Lathrobium simile LeConte, herein designated (MCZ): Pink disc / "♂ / [handwritten] L. simile Lec. / [red] Type 6449 / Lectotype Lathrobium simile Leconte Desg. Haberski & Caterino."

Other material.

Canada: Manitoba: Aweme (4, USNM) . USA: Massachusetts: ‘Mass’ (4, USNM) . New Hampshire: Strafford Co.: Spruce Hole Conservation Area, D. S. Chandler (1, UNHC); Grafton Co. : Hubbard Brook Experimental Forest, D. S. Chandler (1, UNH) . New Jersey: 'N. J.?' (1, USNM). New York: 'N. Y.' (3, USNM). Pennsylvania: Philadelphia , July 1928 (1, CNC) . Rhode Island: 'R. I.' (6, USNM). Vermont: White River Junction, 29.V.1979, E.J. Kiteley (4, CNC) .

Diagnosis.

This species can be difficult to distinguish from L. sparsellum . Lathrobium simile has elongate antennomeres, whereas L. sparsellum has subquadrate antennomeres. Additionally, L. simile has a marginally thicker neck. Males can be further distinguished by the emargination on sternite VIII. The emargination of L. simile is wider than deep and there is a patch of thick black setae below. The emargination of L. sparsellum is deeper than wide and there are no thick black setae. Females are easily distinguished by the shape of the proctiger, which is conical in L. simile but pointed in L. sparsellum , a unique characteristic of that species.

Description.

Body length 8 mm; body coloration red, appendages light yellow. Gular sutures parallel, widely separate; antennomeres V-VII longer than wide. Elytra as long as pronotum. Females with paraprocts divided; sternite VIII oblong. Male sternite VIII with wide, shallow emargination and two vertical rows of thick black setae (Fig. 49B ). Genitalia as in Fig. 49 .

Distribution.

Canada: MB, NB, NS, ON, QC ( Bousquet et al. 2013). USA: CT, DC, IN, MA, ME, NH, NJ, NY, PA, RI, VT ( Newton 2022).

Figures

Figures 44 - 49. Lathrobium terminalia A female terminalia B male sternite VIII C aedeagus in ventral view D aedeagus in lateral view. 44 L. leconteanum 45 L. lineatocolle 46 L. pedale 47 L. praelongum 48 L. rhodeanum 49 L. simile. Scale bars: 1 mm.