Synonyms and other taxonomic changes
Egira crucialis (Harvey, 1875)
Xylomiges crucialis Harvey, 1875
Phylogenetic sequence # 932791.
Lafontaine & Schmidt (2010) included 14 species of the genus Egira
in America north of Mexico. (1)
Adult: forewing light to medium gray with black basal dash and black markings on either side of orbicular spot and below reniform spot; subterminal line broken into two sets of black dashes set at slight angle to outer margin; hindwing white to pale gray with dark discal spot and broken median and terminal lines.
Larva: early instars pale gray with black dorsal and lateral dots on each abdominal segment, and black head; final instar light yellowish-brown with dark lateral dots on abdomen, and reddish-brown head.
British Columbia to California, east to Texas, north to Montana. (2)
Moth Photographers Group
- large map with some collection dates.
- map of photo records submitted to the guide.
Wet coniferous forests in western mountains, and riparian forests at lower elevations.
Most records are from February to July.(MPG)
larvae feed on leaves of alder, Snowbrush (Ceanothus velutinus
), Antelope Bitterbrush
), oak, rose, Salal
), and Spiraea
Powell (1986) found larvae on Pseudotsuga menziesii
Overwinters as a pupa; one generation per year.
See Bruce Walsh's page for comments by Don Lafontaine
on the possibility of peritalis
being a distinct species.
forewing ground color is paler (more whitish), the black markings are generally heavier and more extensive, and the subterminal line is a straight unbroken series of black dashes.
of both species at CBIF)
live larvae and adult images
plus larval description, foodplants, biology (Jeremy Tatum, Butterflies and Moths of Southern Vancouver Island)
Barcode of Life Data Systems (BOLD)
- collection map and photos of pinned adults.
and comparison photo of E. simplex
, plus habitat and larval foodplants (Jeff Miller, Macromoths of Northwest Forests and Woodlands, USGS)
pinned adult image
plus date and location (Bruce Walsh, Moths of Southeastern Arizona)
29 specimen records from California
plus locations and dates (U. of California at Berkeley)
distribution in Canada
BC only (U. of Alberta, using CBIF data)