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 of pronotum. 



Pitch-black or pitch-brown, greasy glistening, sparsely yellow-haired; 

 head entirely dull black; pronotal sides and elytra reddish-brown, often 

 also abdomen brownish-red; its tip, margins of its joints, antennal base, 

 and distal joint also the legs rust-red or brownish-yellow. 



The largest and most robust species of the genus, anteriorly broad, 

 and strongly narrowing posteriorly (Fig. 13). Forebody extremely finely, 

 sparsely short haired, in surface densely shagreened, head proportionate- 

 ly small, with very dense scabrous punctation, dull, anteriorly flatly im- 

 pressed; antennae short, robust, their third joint longer than the second, 

 the middle and next-last ones (6-10) more than twice as broad as long. 

 Pronotum is very broad, posteriorly broader than elytra, more than twice 

 as broaa as long, narrowing anteriorly, with smoothly rounded side-mar- 

 gins without noticeable incurve before the acutely retracted hind corners, 

 its dorsum with rather robust and dense scabrous punctation, in middle- 

 line most often slightly grooved, the broad side-planes smoothly hollowly- 

 impressed. Elytra as long as pronotum, with a little finer punctation than 

 same; abdomen cuneiform , sparsely long-haired, more glistening than fope- 

 body:* its foremost free dorsal joints with fine and rather isolated punc- 

 tation, the surface scarcely visibly reticulated, the hindmost joints 

 with very scattered punctation, smooth in surface. L. 4.5-5 mm. 



It lives in the mounds v^ith Formica rufa and its races: Form, trunci - 

 cola and Form, pratensis , where it often appears numerously. Observati- 

 on seems to show/, that its color with the dark form, nratensis is darker 



-41. 



