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Beetle larva

Beetle larva
Houston, Harris County, Texas, USA
April 26, 2007
Size: 11 mm

Images of this individual: tag all
Beetle larva Beetle larva Beetle larva Beetle larva

Moved from Larvae.

Moved from Ground Beetles.

Moved from Rove Beetles.

Carabidae, not Staphylinidae, larvae
This is a carabid (ground beetle), not a staph (rove beetle). Some members of those two groups can be hard to distinguish, but Carabidae usually have flattened, even slightly upturned, heads like this one and their urogomphi (the pair of projections on the 9th abdominal segment) are almost always solidly joined to the tergite of that segment. The staphylinids (subfamilies Paederinae and Staphylininae) that look most like carabids always have the urogomphi with an articulation, or joint, at the base. (Some staph larvae have unarticulated urogomphi, but they don't otherwise look like carabids.) Also, Carabidae (and the other Adephaga) have one more apparent segment in their legs than do Staphylinidae (and other Polyphaga) - Adephaga have a separate tarsus and claw, while Polyphaga have a fused "tarsungulus".

a lot for the correction and such a detailed explanation!

Moved from Beetles.

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