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Acilius mediatus? - Acilius fraternus

Acilius mediatus? - Acilius fraternus
Tulsa, Tulsa County, Oklahoma, USA
May 7, 2008
Size: 1 inch
I captured this animal as a larva and finished raising it up in captivity. It is newly eclosed, completing its metamorphosis today. Can anyone confirm the ID?

Images of this individual: tag all
Acilius mediatus? - Acilius fraternus Acilius mediatus? - Acilius fraternus

Moved from Acilius.

Probably A. fraternus
A southeastern/midwestern species, and probably the only one of the genus present in Oklahoma. Appearance similar to A. semisulcatus but should appear darker (dark reddish brown to black), especially on the ventral side- since this is a teneral specimen, the colours are not yet fully developed; the hind femur is largely black, which is visible in the ventral shot.
The female of this species (this is a girl) lack sulci (ridges) on the elytra.


Acilius sp.

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