{Taze 97) 



5. U, co.^nata Mark. 



(Mark. Stett. Ent. Ztg. 1842; Kraatz. Ins. D. II, 12:5; Thoms. Skand. 

 Col. II, 256; rails, et Rey Brevip, 1873, 69; Janglb. Ka?. M. II, 122). 



Smaller and narrower than humeralls ; identified especially by the color, 

 characters of pronotum, and the sex-characters of o^ . 



Pitch-brown; humeri ori base of elytra, and posterior margins of the 

 foremost abdominal Joints often yellowish-brown; antennae and legs brown- 

 red or rust-red. 



Forebody very finely and densely punctated, denser and finer than in 

 the preceding species, very finely haired with silky gloss; antennae rather 

 strongly thickened distally, their next-last joints nearly tv^lce as broad 

 as long, distal joint thick, as long as the two preceding joints together. 

 Pronotum very little narrower than elytra, 1^ times as broad as long with 

 rather smoothly rounded sides and scarcely narrowing posteriorly, convex 

 and posteriorly before the scutellum with a depression which is divided 

 into three parts; elytra as long as pronotum; abdomen smooth and glisten- 

 ing. L. 5 mm. 



In the O the forehead is flatly depressed, thereby poBteriorly forming 

 an arcuate, sharp transverse ridge across the vertex; the sixth free dor- 

 sal joint of abdomen flatly emarginated and the margin very finely notched. 



It js mostly found in company with Lasius fuli-^inosus and may be en- 

 countered numerously under leaves, fagot and in crumblings around its abode; 

 it ie. distributed with the host-ant, can also, mbre rarely however, be found 

 with ?ormica fusca (Lundby Hills at Aalborg) and Form, exsecta (Blokhus 

 Hede, author). 



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