Lathrobium (Lathrobium) crurale (Casey, 1905)

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) crurale (Casey, 1905)

Litolathra cruralis Casey, 1905: 94.

Lathrobium (Litolathra) crurale : Bernhauer and Schubert 1912: 258.

Type material.

Lectotype Litolathra cruralis Casey, herein designated (USNM): "N. J. / ♂ / CASEY bequest 1925 / [red] TYPE USNM 38129 / Lectotype Litolathra cruralis Casey Desg. Haberski & Caterino."

Other material.

USA: Iowa: ‘Ia.’ (1, USNM) . New Jersey: same data as lectotype (1, USNM) . Ohio: Ross Co. (1, USNM) .

Diagnosis.

This species closely resembles L. fauveli . The antennomeres IV and V are 2 × as long as wide in L. crurale and 1.6 × times as long in L. fauveli . Males of L. crurale can also be distinguished by the deeper emargination on sternite VIII which is ~ ¼ the depth of the sternite, as opposed to 1/10 as deep in L. fauveli . The female sternite VIII is more conical in L. fauveli than L. crurale .

Description.

Body length 7 mm; body coloration red, appendages light yellow. Gular sutures parallel, widely separate; antennomeres V-VIII 2 × as long as wide. Elytra as long as pronotum. Females with paraprocts undivided, apices longer than basal portion; sternite VIII oblong. Male genitalia as in Fig. 37 . We were unable to dissect the genitalia of Casey’s female specimens.

Distribution.

USA: IA, NJ, OH.

Figures

Figures 35 - 40. Lathrobium terminalia A female terminalia B male sternite VIII C aedeagus in ventral view D aedeagus in lateral view. 35 L. armatum 36 L. confusum 37 L. crurale 38 L. fauveli 39 L. fulvipenne 40 L. geminum. Scale bars: 1 mm.