(Page 480) 



Abdomen is rather broadly marginated. 



To this genus only 1 European species, distributed in North and 



Middle Europe. 



1. D. coerulescens iJyllh. 



(iyllh. Ins. Suec. II, 463; Erichs. Kaf. Iflc. Dr. I, 528; Jen. Spec. 

 Staph. 689; Kraatz Ins. D. II, 739; Thorns. Skand. Col. II, 211; Fey 

 Bre'vip. 1684, 2b; Janglb. Kaf. M. II, 549). 



:«ost like Stenus bipunctatus , but broader, with smaller eyes and 

 longer antennae. 



Eluish-black, rather glistening, with especially fine, whitish hair; 

 elytra behind middle with a round, yellowish-red spot with violet edge; 

 antennal tip often brownish. 



The head above the strongly protruding, round eyes is much broader 

 than pronotum, about as broad as elytra, with dense and rather fine 

 punctation and with two longitudinal grooves between the eyes, separat- 

 ed by a convex interval; antennae slender, rather long; pronotum much 

 narrower than elytra, a little longer than broad before the middle, 

 narrowing posteriorly, at middle with rather sparse and robust, else- 

 where dense and fine punctation, behind middle with a feeble obliquely 

 placed impression on each side; elytra It times as long as pronotum, 

 along the suture and inside of the humerus slightly depressed, with 

 dense, smooth and somewhat more robust punctation than the head and pro- 

 notum; abdomen very densely and finely punctated. Tarsi are shorter 

 than tibiae, their fourth joint is bilobed. L. 5-6 mm. 



In the <5 the abdominal sixth ventral joint at tip roundedly emar;i- 

 nate. 



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