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Case-bearing Leaf Beetle - Cryptocephalus venustus - female

Case-bearing Leaf Beetle - Cryptocephalus venustus - Female
Townsend, Middlesex County, Massachusetts, USA
July 2, 2013

Ed Riley says, "strange color for venustus, prob. not venustus;
"...don't recognize, color abnormal??"

I'll take another look at the specimen
when I get a chance. Thanks v.

It has to be either C. venustus or C. obsoletus
It has to be either C. venustus or C. obsoletus (using White 1968). C. obsoletus is not known from as far north as MA, excepting C. obsoletus indistinctus but the prothoracic spine does not match White's description of that subspecies. Unfortunately this is a female, so male genitialia cannot be compared in this case.

The color is indeed very pale, perhaps teneral? In the specimen, the black humeral spots are visible though not large, but they cannot really be seen in the photo.

I still think this is either a teneral or pale color form of C. venustus. Unless, of course, the color pattern is so far off normal that it does not key correctly.

If Ed would like to take a look at the specimen, I can certainly send it to him.

Cryptocephalus venustus Fabricius, female
Moved from Case-bearing Leaf Beetles. ID'd from specimen, now a photo-voucher. Thanks Tom.

This is the almost completely pale form of Cryptocephalus venustus (previously referred to as C. venustus simplex). There is not much black coloration visible on the venter, which initially led me to suspect C. obsoletus indistinctus, a subspecies only known from 4 specimens taken in 1947 at Wrentham MA. However, the shape of the prosternal spine would be elongate in that subspecies, and is not elongate in this specimen, so this must be C. venustus.

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