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Reddish-brown, glistening; head and pronotum shiny; elytra and 

 abdomen finely haired; the head and often also the middle of prono- 

 tum black or brownish-black; elytra brownish-red, their outer hind- 

 corners more or less brown; the antennae, or their base only, as well 

 as the legs reddish-yellow. 



The head is rounded oviform; the hindmost large, bristle-bearing 

 puncture of the forehead is placed closer to the eye than to the con- 

 striction of head, and on ventral side of head the genal margin - in 

 contrast to all other species of this subgenus - is incomplete, only 

 posteriorly ic it distinct; the antennal next-last Joints rather feeb- 

 ly transverse. Pronotum is a little broader than elytra, not impres- 

 sed on sides, and outside of the usual dorsal punctate row with only 

 1-2 side-punctures nearest the fore-margin. Elytra is a little longer 

 than pronotum, with rather robust and not dense punctation; the abdo- 

 men smoothly tapering, with rather fine and dense punctation. L. 6-8 

 mm. 



In the & the sixth ventral abdominal Joint is smoothened and ob- 

 tusely emarginated at tip. 



Eistributed in North and Middle Europe, in hollow trees and under 



bark, particularly on oak, also found with ants (Form, rufa) ; very rare 



everywhere in Denmark. (Lindum Forest south of Hobro; CJjerup in Fyn; 



Slagelse, Jaegerspris, Valsalille; V. Ulslev, Loll.; Bornholm). 



16. Q. infuscatus Br. 



(Erichs. Jen. Spec. Staph. 543; iiuls. et Rey Brevip. 1877, 526; 

 Janglb. Kaf. M. II, 401). 



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