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1. Temples on ventral side of head almost contiguous (the head in our 



species noticeably broader than pronotum) : 1. Subg. ?,fedon s. str..2. 

 Temples on ventral side of head more or less broadly separated by 



a smooth or punctate interval 4. 



2. Hind tarsi slender, about as long as the tibiae. L. 6-7 mm 



1. M. castaneus £ravh. 



Hind tarsi much shorter than tibiae. Species smaller 3. 



3. Pronotum with rather coarse, dense punctation with smooth middle- 



line. L. 4-5 mm 2. U. brunneus Br. 



Pronotum very finely punctate, with smooth, often less distinct 



middle-line. L. 3.5-4 mm 3. M. ripicola Kr» 



4. Interval of temples not punctate, and smooth, body glistening 



(head in our species as broad as pronotum); 2. Subg. Hypomedon 



Muls 5. 



Interval of temples punctate; body dully glistening (head in our 



species hardly as broad as pronotum): 3. Subg. Pseudomedon Muls.. 7. 



5. Elytra longer than pronotum 6. 



Elytra only as long as, or a little shorter than pronotum. L. 3-3.5 



mm 4. K. melanocephalus F. 



6. Head in surface between punctures smooth. L. 4.5 mm: 5. IJ. bicolor Oliv. 

 Head in surface (suitably magnified) finely transversally aciculate. 



L. 3.5-4 mm 6. IL. propinquus Bris. 



7. Interval of temples as finely punctate as the finely punctate temples. 



Antennae, mouth-parts and legs brownish-red. L. 4 mm.: 



7. M. obsoletus Nordm. 



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