Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowseInfoImagesLinksBooksData
Photo#469037
Operophtera brumata - female

Operophtera brumata - Female
Kennebunk, York County, Maine, USA
October 31, 2010
Size: 1.1 cm
Found on a wall.

Operophtera brumata female
This is for sure a winter moth female! On Bruce spanworm the wing buds would be much shorter than the second segment of the abdomen. In winter moth the wings are longer than the second segment. We do see a few in late October in Boston too, so the timing is fine, but on the early end. And winter moth is in Kennebunk, ME. A really nice picture too. This gal is very fat and sassy, we have had gals this size lay up to 400 eggs (the average is closer to 200). In MA we are finding some spots where winter moth is expanding its range and you can also find up to 10% of the population as hybrids (you can only truely ID these with a dna test). But your photo looks very good as a poster child for winter moth. Thanks for the nice post. A nice addition to BugGuide, since this critter is now in ME, NH, MA, RI, CT and NY (Long Island). If anyone sees one of these in a state not listed above, please send me a specimen so that we can confirm it via a dna test. boettner@psis.umass.edu

Moved
Moved from Moths.

Wing buds confirm id. Bruce spanworm females do not have these.

 
Thanks
Thanks for mentioning that. I added the info to the guide page. According to a Canadian web page, both species have vestigial wings but those of O. bruceata are a third the size.

 
You're welcome!
There are some female pictures residing in the genus page that can now, with this info, probably be moved to species.

Moved
Moved from ID Request.

See also Operophtera
Operophtera brumata is a common winter moth near Boston. Females are wingless. It may be too early to see them flying.


Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.