Olisthopus parmatus (Say) 1823  

According to Lindroth (1966) found at the edge of mixed woods on sandy moist soil in the shade, and to Larochelle (1974a) in "light deciduous and mixed forest, on gravelly or sandy soil, under dead leaves and stones...thick litter." These beetles are fully winged but flight is not yet known to occur. Only one specimen was collected on the Maryland shore in 1918 (HSB). There are no recent records. No teneral specimens seen. The single adult was collected in October. According to Lindroth (1966) hibernation takes place as an adult. Larochelle (1972a) has collected a specimen of this species in a rotten tree stump in mid-November in Quebec. Total length, 6.5 to 7.5 mm (7.0).

Synonyms: Olisthopus cinctus, Say, 1830; Olisthopus pictus, Casey, 1913