828 FAMILY XI;. LAAU'Y'KID.K. 



sometimes extending nearly their full length, rarely wholly lacking; base 

 of femora and greater part of abdomen yellow. Sides of thorax narrowly 

 margined. Length S-ll mm. 



Throughout the State, common in the southern counties; much 

 less so in the northern portion. June 3-July 28. Occurs by 

 thousands on the flowers of the linden ; also abundant on those of 

 wild hydrangea, Jersey tea and other shrubs. 



Tribe III. TELEPHORINI. 



Head but slightly prolonged before the eyes; maxillae moderate 

 in size, their palpi rather long and of variable form; front coxae 

 contiguous; prosternum distinct in front of coxa 1 ; middle coxae con- 

 tiguous; mesosternum horn-like in texture. Eight of the nine 

 recognized genera are known to be represented in the State. 



KEY TO INDIANA GENEKA OF TELEPHORINI. 



. Elytra entirely covering the wings. 



l>. Thorax truncate in front ; head entirely exposed ; gular sutures con- 

 fluent XVIII. PODABRUS. 



&&. Thorax rounded in front ; head partly covered ; gular sutures sep- 

 arate. 



c. Last joint of maxillary palpi dilated, hatchet-shaped. 

 <L Hind angles of thorax of male notched; head short and broad. 



XIX. SILIS. 

 dd . Hind angles of thorax rounded. 



c. Head moderately long; sides of thorax not notched. 



XX. TELEPHORVS. 



ee. Head short and broad; sides of thorax in male nicked at the 



middle. XXI. POLEMIIS. 



cc. Last joint of maxillary palpi suboval, obliquely truncate; sides of 



thorax in male distinctly notched at the middle and behind ; an- 



tennre strongly serrate. XXII. DITEMNUS. 



aa. Elytra abbreviated; wings exposed; gular sutures confluent. 



f. Maxillary palpi with the last joint elongate, hatchet-shaped; side 

 pieces of metathorax wide in front, strongly triangular ; claws with 

 broad tooth near base. XXIII. TRYPHERUS. 



//. Maxillary palpi with the last joint oval, pointed; side pieces of meta- 

 thorax narrow ; claws simple. 

 f/. Mandibles toothed; head wide, narrowed behind. 



XXIV. MALTHINUS. 

 !/(/. Mandibles simple ; head not narrowed behind. 



XXV. MALTHODES. 



XVIII. PODABRUS Fisch. 1830. (Gr., "foot + delicate.") 



Head prolonged and narrowed behind the eyes, so as to form a 

 distinct neck which is not covered by the thorax ; the latter nearly 



