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Cryptocephalus triundulatus

Cryptocephalus triundulatus
Arizona Sonoran Desert Museum, Tucson, Pima County, Arizona, USA
August 9, 2008
Size: 4mm


Cryptocephalus triundulatus White
Size, pattern, and available hosts suggest your photo is Cryptocephalus triundulatus White


Cryptocephalus atrofasciatus Jacoby
Host: Pinus - nonexistent in the low desert scrub surrounding the ASDM
Length: 5.0 to 7.5 mm, based on 54 specimens in the USNM
Pattern: (Det. E. G. Riley)
(However this species is one of the most variable in the genus in coloration)

Cryptocephalus triundulatus White
Hosts: Fabaceae, Polygonaceae, the former family dominates around the ASDM
Length: 4.0 to 4.4 mm. You cite 4mm
Pattern: (Det. E. G. Riley)

Also, this specimen shot by Dr. Plagens in Black Canyon, Yavapai Co., AZ on Eriogonum wrightii and listed at 4mm is probably Cryptocephalus triundulatus White as the size, host and pattern all fit.

Much better!
I was always uncomfortable with the ID because of the biotope it was found in. But there are pines at the Arizona Desert Museum - they have a sample of the Catalina Mnt forest areas there - so it seemed unlikely but not totally impossible to find a forest sp. there (Blacklighted on museum grounds)

Yes, a few out-of-their-element Pines at ASDM
While there are a few (sickly ?) pines at the Desert Museum, there is certainly an abundance of well tended legumes at the site.
Also, variation of Cryptocephalus atrofasciatus ...

barely encompass anything akin to your form. White (1968) notes that the extreme forms are not common.
However, it's not too surprising that Jacoby (1880) chose to illustrate a boldly patterned (extreme) form as it's prettier than the norm...

Moved from Cryptocephalus.

Moved from The Casebearers.

Margarethe, I collected one o
Margarethe, I collected one of these while in Box Canyon at the same time period! It is Cryptocephalus atrofasciatus. Although no host is listed I am certain it is a species of oak.

thanks for the ID. I found it very far off (50 mi or more)any natural oak habitat. But of course, the Desert Museum has some few oaks to show the different vegetation belts of the Sky-islands as the mountains are called here

Next time I'm down in AZ we s
Next time I'm down in AZ we should get together. You seem to find the greatest stuff!!

I'd like that
just e-mail me - my e-mail is through my web page

just a guess
but maybe:

or ??

Hope it helps...


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