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

TaxonomyBrowseInfoImagesLinksBooksData
Photo#855411
Leaf mines on Ceanothus megacarpus - Tischeria

Leaf mines on Ceanothus megacarpus - Tischeria
Catalina Island, Los Angeles County, California, USA
June 20, 2012
These mines were on nearly every leaf of the host, many leaves with more than one mine. The larvae seem to exit through the bottom and pupate on the underside of the leaf, but I was unable to successfully rear any.

Jerry Powell's island checklist lists Ceanothus twice; first for "Tischeria ?ceanothi" and again for "Acanthopteroctetes ?" of which he notes "many", but neither of these mines are described of pictured in MWNA. And then again, it could be something else entirely.

Any ideas?

Images of this individual: tag all
Leaf mines on Ceanothus megacarpus - Tischeria Leaf mines on Ceanothus megacarpus - Tischeria Leaf mines on Ceanothus megacarpus - Tischeria

Moved

Tischeria
I think Tischeria sp. is a good call. There are several species that mine Ceanothus in California, and in at least three of them the pupa is thrust through the lower epidermis when the moth emerges.

I haven't yet been able to find a description of the mine of Acanthopteroctetes unifascia, the only species in that genus whose larva has been found.

 
Update
Dave Wagner described the mine of Acanthopteroctetes unifascia to me the other day. It is a simple, very small blotch mine, less than a square cm when complete.

 
Excellent
So that would definitely rule out that species (and now that I know what those mines look like, I'll be on the lookout for those ones as well).

I visited Catalina Island again last month and returned to the Ceanothus where I originally found these mines, but I couldn't find any. Very dry over there, the drought very evident.

 
If this is a described species...
it seems like Tischeria bifurcata is the only possible match. But it's not a great match, so this is maybe more likely an undescribed species.

 
Yup
I reared Tischeria ceanothi from Catalina and mines were abundant when I was there in the spring with Powell. I did not dissect the specimen, and it's now located at the DMNS - so can't reaffirm my ID. It wouldn't surprise me if it was undescribed, but ceanothi seemed like the best match.

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