Common NameMountain GirdleSeasonalityLate July to mid Augus in Alberta.IdentificationA mid-sized, grey geometrid with variable grey speckling; median band slightly darker, broad and heavily scalloped. Hindwing paler, with a faint PM line. Discal spot black, not white as in Caripeta species. Very similar to Nepytia species (particularly N. freemani), but in Enypia the forewing PM line comes closest to the wing margin near the apex, where it joins the costa, while in Nepytia the PM line is nearest the wing margin in the subapical (not apical) area. E. griseata has the discal spot well separated from the AM band, in venata the AM line jogs out to the discal spot.
Scientific NameEnypia griseataCommon Name
Mountain Girdle
Habitat
Montane coniferous forests and woodlands.
Seasonality
Late July to mid Augus in Alberta.
Identification
A mid-sized, grey geometrid with variable grey speckling; median band slightly darker, broad and heavily scalloped. Hindwing paler, with a faint PM line. Discal spot black, not white as in Caripeta species. Very…
A mid-sized, grey geometrid with variable grey speckling; median band slightly darker, broad and heavily scalloped. Hindwing paler, with a faint PM line. Discal spot black, not white as in Caripeta species. Very similar to Nepytia species (particularly N. freemani), but in Enypia the forewing PM line comes closest to the wing margin near the apex, where it joins the costa, while in Nepytia the PM line is nearest the wing margin in the subapical (not apical) area. E. griseata has the discal spot well separated from the AM band, in venata the AM line jogs out to the discal spot.
Life History
The larva is stout and somewhat tapered at the ends, resembling a cutworm. Mature larvae are green with two white subdorsal stripes. Fourth instar larvae overwinter, and resume feeding in the spring (Duncan 2003).…
The larva is stout and somewhat tapered at the ends, resembling a cutworm. Mature larvae are green with two white subdorsal stripes. Fourth instar larvae overwinter, and resume feeding in the spring (Duncan 2003). Adults are nocturnal and come to lights.
Conservation
Not of concern.
Diet Info
Larvae are polyphagus on conifers, feeding on Douglas-fir (Pseudotsuga), spruce (Picea), and pine (Pinus), cedar (Thuja) and fir (Aibes) (McGuffin 1987).
Range
Central BC and southwestern Alberta south to AZ (McGuffin 1987).
Citation
Page Citation for Enypia griseata
Page Citation
"Species Details - Enypia griseata, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4195. Accessed 04 Feb. 2025.
References
AuthorMcGuffin, W. C.
TitleGuide to the Geometridae of Canada (Lepidoptera): II. Subfamily Ennominae, 4
Publication Date1987
Series TitleMemoirs of the Entomological Society of Canada
Volume138
Pages182
Specimen Information
There are 11 specimens of this Species.
11 results plotted on map in 7 markers. Note: Only records with latitude and longitude coordinates are plotted on map.