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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Carpet, Powder-post and Death-watch Beetles (Bostrichoidea) » Death-watch and Spider Beetles (Anobiidae) » Dorcatominae » Puffball Beetles (Caenocara) » Caenocara oculata
Photo#86851
different species? - Caenocara oculata - male - female
Copyright © 2006 Jim McClarin

different species? - Caenocara oculata - Male Female
Nashua, Hillsborough County, New Hampshire, USA
October 1, 2006
Size: about 2 mm
These two beetles were among dozens that eclosed in one of my rearing containers that I had loaded with at least three puffball species, hoping to see whether these beetles were host specific and might give me a variety of species to photograph. The difference in the antennae of these two might be a mere case of different angles to the camera altering their perceived outlines.

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different species? - Caenocara oculata - male - female different species? - Caenocara oculata - female different species? - Caenocara oculata different species? - Caenocara oculata
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Contributed by Jim McClarin on 12 November, 2006 - 12:07pm
Last updated 18 May, 2007 - 9:38am

Moved
Moved from Puffball Beetles.
Key character visible on right specimen.
… Boris Büche, 18 May, 2007 - 9:38am login or register to post comments

rather: different sexes
Hi Jim,
the specimen to the right is probably a female (first segment of antennal club triangular with straight edges, less than twice as broad as long), the one on the left a male (that segment more produced internally). Sexual dimorphism of that kind is the rule within the subfamily.
They may also belong to different species, but: Members of Dorcatominae genera are often not identified safely than by inspection of male genitalia, being very similar in external appearance.

cheers, Boris
… Boris Büche, 23 November, 2006 - 4:32am login or register to post comments

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