Rhexius spp.

Ferro, Michael L., Gimmel, Matthew L., Harms, Kyle E. & Carlton, Christopher E., 2012, Comparison of the Coleoptera communities in leaf litter and rotten wood in Great Smoky Mountains National Park, USA, Insecta Mundi 2012 (259), pp. 1-58 : 23

Rhexius spp. (female) ( Fig. 54 )

Comments. Female Rhexius LeConte cannot be reliably identified. These female specimens are probably representative of the two described and two undescribed species that have been collected in GSMNP. Range: eastern North America west to Oklahoma. Habitat: rotten wood, leaf litter, flood debris. Collection Method: sifting/Berlese litter, grass roots, flight intercept trap, UV light. Biology: unknown, members of this subfamily are predacious. Present Study: significantly higher abundance in leaf litter and secondary forest, indifferent to season. References: Blatchley 1910, Chandler 1990a, b; Downie and Arnett 1996; Newton et al. 2001.

Figures

Figures 49–54. Habitus images. 49) Eutyphlus sp. (female) (Staphylinidae: Pselaphinae). 50) Machaerodes carinatus (Brendel) (Staphylinidae: Pselaphinae). 51) Mipseltyrus nicolayi Park (Staphylinidae: Pselaphinae). 52) Pseudactium arcuatum (LeConte) (Staphylinidae: Pselaphinae). 53) Rhexius schmitti Brendel (Staphylinidae: Pselaphinae). 54) Rhexius sp. (female) (Staphylinidae: Pselaphinae).