Basis for Former Listing
Ceraclea brevis is known worldwide only from the male holotype collected in 1965 in Crow Wing County, Minnesota. It has not been relocated despite collecting at a variety of lake and stream habitats near this locality (Luedeman 1991; Houghton et al. 2001). Further inventory work is needed to relocate C. brevis and delineate its range in the state. Given its extremely limited distribution and uncertainty surrounding its status, C. brevis was listed as a special concern species in Minnesota in 1996.
Basis for Delisting
Scientistists have been unable to rediscover C. brevis despite extensive collecting. Recent examination of the C. brevis specimen suggests that it may actually be that of a similar and much more common species C. tarsipunctata. Until it can be confirmed that this is a distinct species and is still present in Minnesota, a status of special concern is not necessary. Ceraclea brevis was delisted in 2013.