An annotated list of the Lepidoptera of Alberta, Canada Author Pohl, Greg Northern Forestry Centre, Natural Resources Canada, Edmonton ,, Canada Author Anweiler, Gary University of Alberta Strickland Entomology Museum ,, Canada Author Schmidt, Christian Canadian Food Inspection Agency, Ottawa, Canada Author Kondla, Norbert Calgary ,, Canada text ZooKeys 2010 2010-03-05 38 38 1 549 journal article 10.3897/zookeys.38.383 aa97d560-1969-4b79-93bb-2614b7835c0e 1313–2970 576629 13. Psychidae – bagworm moths Males are minute to small ( 8–25 mm wingspan) moths with drab brown wings; most females are wingless, and many resemble larvae. Larvae construct cases of plant matter and debris, in which they move about while feeding. Most species feed on plants, but at least one genus ( Dahlica ) feeds on lichens and debris. Parthenogenesis has developed in a few genera, including Dahlica . Approximately 1000 species of psychids are known worldwide. They occur throughout the world, but most species are restricted to the Palearctic. Twenty-seven species are known from North America, four of which are reported from AB. Davis (1964) treated all of the known North American species, with the exception of two recently introduced species in the genus Dahlica .