Polyderis laevis (Say)

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 : 15

Polyderis laevis (Say) ( Fig. 9 )

Range: eastern North America : Quebec, south to Texas, west to Iowa. Habitat: lowlands, pastures, open ground, leaf litter. Collection Method: inspecting ant nests, under stones, sifting/Berlese wood chips, light trapping. Biology: overwinters as an adult, predacious, frequent flyer. Present Study: significantly higher abundance in leaf litter, secondary forest, and spring. References: Lindroth 1966 (as Tachys laevis Say ) ; Downie and Arnett 1996; Ciegler 2000; Larochelle and Larivière 2003 (and references therein).

Trechus (Microtrechus) pisgahensis Barr ( Fig. 10 )

Range: North Carolina, high altitudes (1400–1600 m). Habitat: mountains, coniferous forests, moist areas including leaf litter and moss. Collection Method: collection from leaf litter, searching under moss. Biology: overwinters as an adult, flightless, presumably predatory. Present Study: indifferent to substrate and season, all specimens taken in primary forest. References: Barr 1979 (as Trechus (Microtrechus) vandykei pisgahensis Barr ) ; Bousquet and Larochelle 1993; Larochelle and Larivière 2003.

Figures

Figures 7–12. Habitus images. 7) Anillinus cherokee Sokolov and Carlton (Carabidae: Trechinae). 8) Anillinus langdoni Sokolov and Carlton (Carabidae: Trechinae). 9) Polyderis laevis (Say) (Carabidae: Trechinae). 10) Trechus (Microtrechus) pisgahensis Barr (Carabidae: Trechinae). 11) Mychocerus striatus (Sen Gupta and Crowson) (Cerylonidae: Ceryloninae). 12) Holopsis sp. (Corylophidae: Corylophinae).