Lathrobium (Lathrobium) praelongum 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) praelongum Casey, 1905

Lathrobium praelongum Casey, 1905: 82.

Type material.

Lectotype, Lathrobium praelongum Casey, herein designated (USNM): "Coll J B: / CASEY bequest 1925 / [handwritten] Lathrobium praelongum / [red] TYPE USNM 38113 / Lectotype Lathrobium praelongum Casey Desg. Haberski & Caterino."

Other material.

USA: Maryland: Allegany Co.: Little Orleans , 05 Jun 2021, A. Deczynski (1, CUAC) . North Carolina: Swain Co.: Hazel Creek Great Smoky Mountains National Park , 18 Jul 2003, S. L. Staines, C. Ware (2, LSAM) . Virginia: Highland Co.: Bullpasture River, 02 Jun 2019, C. Harden, streamside gravel/cobble/sand (1, CUAC); Shenandoah Co. : Passage Creek near Buzzard Rock, 18 Apr 2016, C. Harden, under stones, wet sandy soil (1, CUAC); Shenandoah Co. : Elizabeth Furnace Recreational Area , Rte 619 Mudhole Gap trail, 09 Jan 2016, C. Harden (1, CUAC); Shenandoah Co. : George Washing National Forest , Signal Knob trailhead, 25 Oct 2017, C. Harden, moist ditch in floodplain (1, CUAC); Appomattox Co. : Holiday Lake State Park , 15 Jun 2017, C. Harden (1, CUAC); Bath Co. : Whites Cave , 15 Oct 2020, C. Harden (1, CUAC) .

Diagnosis.

This species closely resembles L. amplipenne , L. armatum , and L. pedale in external morphology. Males are readily distinguished by the uniquely shaped ventral process of the aedeagus that is twice as long as the median lobe. Females are more challenging, but they have shorter paraprocts than the aforementioned species, and denser pubescence on their gonocoxites.

Description.

Large species, body length 9 mm; body coloration dark, appendages paler red, elytra bicolored. Gular sutures converging, nearly touching posteriorly; antennomeres V-VII as wide as long. Elytra at least as long as pronotum. Females with paraprocts undivided, apices shorter than basal portion, ~ 0.7 × as long; sternite VIII weakly oblong. Characteristic aedeagus (Fig. 47 ).

Distribution.

USA: IL, MD, NJ, NC, VA.

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.