may be アカバハネカクシ.
may be クロガネハネカクシ(Platydracus inoratus).
02 Apr 2014.
Buckingham Springs, Bucks Co, PA.
13.5 mm head-abdomen.
Found under a rock in the woods.
This is P. cinnamopterus or a closely related species distinguishable only by experts.
ID courtesy of V. Belov:
MJL488. Under stone. Heathland.
By some miracle I managed to ID this rove beetle: looks like a match for Platydracus cinnamopterus, rufous morph. 12.7 mm. Found in a mulch pile. Held its tail up in the air at 90 degrees when disturbed. Sorry, not a great shot.
It was too quick to get a good picture. Inch-long beetle-like creature, with two red spots.
Saved from the chickens, though it was putting up a valiant fight
The Rove Beetle, Platydracus maculosus, at Arcadia Management Area.