Perigenes constrictus (Say)
Originally recorded from Alaska by Van Duzee (1919) as Ligyrocoris constrictus Say, the female specimen involved with data Alaska, Ketchikan, 10.ix. 1916 (Canadian Arctic Expedition) [CNC] is actually Ligyrocoris sylvestris (Linnaeus). Hence, the reports of Perigenes constrictus (Say) from Alaska by Slater (1964), Ashlock & Slater (1988), Maw et al. (2000) and Lattin (2008) are in error. Perigenes constrictus is an eastern North American species that does not occur in Alaska, and should be removed from the list of Alaska Heteroptera.