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Crambidae, Acentropinae, Petrophila jaliscalis? - Petrophila jaliscalis

Crambidae, Acentropinae, Petrophila jaliscalis? - Petrophila jaliscalis
Anza-Borrego Desert State Park, San Diego County, California, USA
March 14, 2007
Size: Costal forewing ~ 10.5 mm
This moth has been identified by Ron Leuschner as Crambidae, Nymphulinae which is now Acentropinae. It was found in Coyote Canyon close to the creek; the rest of the canyon is dry sandy desert. It resembles Petrophila jaliscalis in BugGuide.

Moved from Petrophila.

Yes, - 4775 - Petrophila jaliscalis
Looks Like It to me.

Petrophila jaliscalis
Thanks so much for looking at this unusual moth and confirming the identification. It is much appreciated!

Moved from Moths.

NIce! We hope you get a confirmation.
Just curious. Did you learn anything on your search that would help with the ID of any of the following?

Acentropinae = Nymphulinae
I suspect that all of the photos are in this subfamily. Powell and Opler state (p. 180) that about 50 species in 14 genera are known in America north of Mexico, mostly in the Southeast, with only a dozen described in the West.

Interestingly, Petrophila translates as "rock-loving." Our Petrophila flew very weakily to this rock and just stayed there, really camouflaged.

What makes these moths fascinating is that their larvae are adapted to aquatic larval life. According to P and O, they are unique among Lepidoptera in this adaptation.

Moved from ID Request.

Nymphulinae changed to Acentropinae
I think I've tracked down this moth through Powell and Opler's Moths of Western NA and Bugguide. Crambidae, Acentropinae, genus Petrophila, very possibly species P. jaliscalis? There are several pictured in Bugguide of this genus from Arizona and LA. The one illustrated in P and O's book is from Imperial Co, CA, which is the same terrain as where we saw it in ABDSP.

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