Identification
Adult: antennae bipectinate with broad branches in male, simple in female; forewing gray with black AM and PM lines edged with white toward inner margin; note black basal and median dashes; brown shading just above median dash; hindwing grayish-brown
[description by Charles Covell]
Range
New England and Nova Scotia westward to Manitoba and southward mainly in the Appalachians to northern Georgia
Season
double-brooded: adults fly from early May to early July, and again from late July to late September
Food
larvae feed on leaves of alder, clover, cranberry, rose, St. Johnswort (Hypericum spp.), and other plants
See Also
almost indistinguishable from
H. contrasta in wing markings but tends to have a duller, more even gray-brown forewing with the black lines and streaks more sharply defined (
compare images of both species)
In some instances, adults can be separated from the similar H. contrasta by the flight period: H. contrasta is single-brooded, flying from mid-June to early August, with most records being in July. Also, contrasta occurs west to British Columbia, whereas xylinoides doesn't occur west of Manitoba.
Internet References
live adult, larva, pupa images (John Himmelman, Connecticut)
pinned adult image (John Glaser, Maryland)
common name reference plus food plants and flight season (Ohio State U.)
article abstract "Revision of the genus
Hyppa with description of a new species" (Troubridge & Lafontaine,
The Canadian Entomologist, 2004)
Contributed by
Robin McLeod on 1 February, 2005 - 5:21am
Last updated 4 March, 2006 - 9:19am
