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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Snout and Bark Beetles (Curculionoidea) » Snout and Bark Beetles (Curculionidae) » Broad-nosed Weevils (Entiminae) » Sciaphilini » Sciaphilus » Sciaphilus asperatus
Photo#188724
Beetle - Sciaphilus asperatus
Copyright © 2008 John F. Carr

Beetle - Sciaphilus asperatus
Newton, Middlesex County, Massachusetts, USA
June 7, 2008
Size: 4.5mm
Some sort of snout beetle, weevil, or relative, I presume.

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Beetle - Sciaphilus asperatus Beetle head detail - Sciaphilus asperatus
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Contributed by John F. Carr on 7 June, 2008 - 6:38pm

Yes, a weevil
... and it appears to be Sciaphilus asperatus.
… Stephen Luk, 7 June, 2008 - 6:50pm login or register to post comments

 
Why Sciaphilus?
Why Sciaphilus in particular? Calomycterus looks about the same to my non-expert eye.
… John F. Carr, 7 June, 2008 - 7:06pm login or register to post comments

 
Several differences I noticed
in the habitus of the two species ... the distribution of maculation (spotting) - in Calomycterus, heavy over the pronotum and between the elytral striae; none in Sciaphilus. The antennae are longer, heavier, and setaceous in Calomycterus, whereas they are bare in Sciaphilus. Also, pale scutellum in Calomycterus, and non-existent (or at least very small) in Sciaphilus.
… Stephen Luk, 7 June, 2008 - 7:23pm login or register to post comments

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