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small carabid - Tachys rhodeanus

small carabid - Tachys rhodeanus
Stow, Middlesex County, Massachusetts, USA
May 6, 2011
Size: 3mm
Found under a rock on a muddy shore of a marsh.

Moved from Paratachys.

Paratachys rhodeanus
based on my microscopic examination of this specimen which is now a photo-voucher in the P.W.Messer collection. New to BugGuide and my reference collection. MA is a new state record which I will convey to cataloguer Yves Bousquet. Thanks Tom.

Distinguished from similar species in the northeast by noticeably smaller eyes and a pronotum clearly sinuate with sharper hind angles. Lorenz (2005) cites combination Tachys (Paratachys) rhodeanus. BugGuide can comply later pending the pertinent volume on Western Hemisphere Caraboidea by Terry Erwin

Moved from Ground Beetles.
Looks like it's more than just a guess:-)

guessing, Paratachys

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