BRACHYGLUTINI 123 



trast to the much larger last two segments, (3) third tarsal segment with only 

 a single claw, (4) generally globular posterior coxae, (5) abdomen with five 

 visible tergites and usually but five visible sternites. The first sternite is nearly 

 invisible between the posterior coxae with a few exceptions as in Eupsenius and 

 Eupsenina. 



At present the Brachyglutini is the largest tribe in the family, is world wide 

 in distribution, and presents radiating lines of genera which appear to approach 

 Euplectini in some cases, Batrisini in others, and Tychini in still other cases. 

 Its central taxonomic position renders its study especially profitable for a 

 conceptual view of the family as a whole. 



Key to the Genera 



Posterior coxae contiguous or subcontiguous (PL XIV) 2 



Posterior coxae distant 3 



2(1). Ventral surface of head with a median, longitudinal carina; 

 maxillary palpi minute, with the first segment invisible ; pos- 

 terior coxae absolutely contiguous ; integument with brownish 



pubescence ; known only from Venezuela BARADA 



Ventral surface of head without any trace of a median, longi- 

 tudinal carina ; maxillary palpi normally developed ; posterior 

 coxae subcontiguous, with the first sternite visible between 

 them as a minute piece which is longer than wide; integument 



glabrous, without punctures or pubescence (PI. XIV) 



EUPSENIUS 



3(1). Ventral surface of head with either a median, longitudinal 



carina or a median fossa 4 



Ventral surface of head without a median longitudinal carina 

 or fossa; habitus of Eupsenius, having the integument glab- 

 rous, with few punctures or pubescence, but posterior coxae 

 are widely separated, the first sternite beneath the meta- 

 sternal margin being a narrow, oblong piece, much wider than 

 long; each side of head from the ventral face is angulated in 

 the posterior half, the anterior portion being rounded and the 

 posterior half with the margin carinated EUPSENINA 



4(3). Ventral surface of head with a large, median, oval fossa or 

 fovea, the borders of which are more or less carinated; anten- 

 nae always ten-segmented 5 



Ventral surface of head with a median, longitudinal carina; 

 antennae either ten-segmented or eleven-segmented 7 



5 (4). Third (penultimate) segment of maxillary palpi much longer 



than wide EUTELEIA 



Third (penultimate) segment of maxillary palpi transverse, 

 slightly or greatly wider than long, subtriangular, with the 

 external face rounded and the internal face angulated or sub- 

 acute 6 



