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

Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

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

Erynnis tristis? - Erynnis tristis - female

Erynnis tristis? - Erynnis tristis - Female
Rancho Santa Ana Botanic Gardens, Claremont, Los Angeles County, California, USA
September 6, 2005
In Oak Woodland, near Pacific Live Oak (Quercus agrifolia).

There are reportedly only two Duskywings in southern California with a white trailing edge on the hindwing:
Erynnis tristis, and E. funeralis.

After careful study of descriptions and images, taking into account variations, I tend to think that this is E. tristis.

However, in some photos Mournfuls look like Funerals and vice versa. The mournful situation is that I'm still not certain. Oaks speak for tristis, also it isn't dark enough, nor the contrasting patch on the forewing light enough, to be funeralis.
Images fairly close (I think the present specimen is somewhere in between) are here:

and here:

Images of this individual: tag all
Erynnis tristis? - Erynnis tristis - female Erynnis tristis - female

For what it's worth, I think you've got it.
I've been doing some digging on this topic recently and have concluded that both duskywings I've posted are Funereal. On a count today, I saw a bunch more and feel these are also Funereal. At least in Orange County, Mournfuls are scare.

Yours looks different than mine, and I'll bet yours is Mournful. But hey, that's just gut feel.

Have you seen "The Butterflies of Orange County, Californa" by Larry J. Orszak? Published in the seventies, it's the standard source for this area. He states that it is "extremely difficult" to distinguish type without genitalic dissection and shows line art views of male genitalia. (I could email if you're interested.)

I assume you already know that from Arizona east the two are more easily distinguished, as described in "Butterflies Through Binoculars: The West." Oh, the penalties of living in The Golden State.

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