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Photo#44684
Cucujid larva? - Dendroides canadensis

Cucujid larva? - Dendroides canadensis
Ann Arbor, Washtenaw County, Michigan, USA
Size: 12 mm
In bark, on firewood pile, in large numbers. Robust mandibles with 3 blunt teeth. Evident "eyes" appear to be darkened cuticle, no ommatidia. Appears to be cucujids.

Moved

Cucujid larva?
This is the larva of Dendroides canadensis (yes, Pyrochroidae). - Dan Young; Univ. Wisc.

No this one is a pyrochroid.
I've just posted a photo comparing two species of Pyrochroidae and one of Cucuj*idae. The cucu*jids do not have an elongate terminal segment and their caudal spikes are not as pronounced. Here's the group shot:

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