THE SOFT-BODIED PLANT BEETLES. 



KEY TO SUBFAMILIES OF DASCYLLIDJE. 



a. Front coxa? with large and distinct troehantin ; covering of body usually 

 firm. Subfamily I. Dascyllix.e, p. 689. 



aa. Front coxa? without troehantin; covering of body usually soft and thin. 



Subfamily II. Helodix.f:, p. 690. 



Subfamily I. DASCYLLINAE. 



In addition to the distinct troehantin. the mandibles are more 

 prominent than in the Helodina? ; tibia? never biearinate on outer 

 side and bearing smaller spurs. The following genera are perhaps 

 represented in the State : 



KEY TO INDIANA GENERA OF DA S C Y LLI X JE . 



a. Hind coxa? narrowly separated; lower face prolonged, concealing the 

 mandibles and most of the labrum. 

 Jj. Antenna? slender, elongate, joints 2-3-4 very short, subequal, to- 

 gether not longer than fifth. Macropogox. 

 hb. Antenna? subserrate. joints 2 and 3 only short, together equal to 

 fourth. I. Eurypogox. 



aa. Hind coxa? contiguous : lower face short, labrum and mandibles visible. 

 c. Claws pectinate ; thorax acutely margined. Odoxtoxyx. 

 cc. Claws simple : thorax not acutely margined : middle coxa? not more 

 widely separated than the front ones. Axchytarsus. 



Macropogon rufipes Horn, oblong, piceous. legs and antenna? red- 

 dish-brown, length 5.5 mm., is recorded from Illinois. 



I. E urypogox Motsch. 1859. ( Gr. . ' ; wide - beard. ' ' ) 



Head free, slightly -deflexed and received in the thorax as far as 

 the eyes: antenna? slender, more than half the length of body, joints 

 4-11 slender, subequal : prosternum prolonged, meeting the meso- 

 sternum. carinate on each side. Two species are known, one of 

 which occurs from Pennsylvania to Kansas, including Indiana. 



1309 (3974). Eurypogox xiger Melsh.. Proc. Phil. Acad. Nat. ScL, II. 1844, 

 309, 



Oblong, convex. Black, shining, sparsely pubescent. Thorax one-half 

 broader than long, slightly broader at base, sides straight, surface sparsely 

 and coarsely punctate. Elytra oblong, parallel, slightly wider than thorax, 

 with rows of coarse, closely placed punctures ; intervals much narrower 

 than the stride, each with a row of very fine punctures. Length 4-^.5 mm. 



Marshall. Vigo. Orange. Floyd and Posey counties ; rare. May 

 30-June 23. Beaten from leaves of hickory and oak. 



Odonionyx trivittis Germ., oblong-oval, piceous. thorax reddish- 

 yellow with two large black spots, length 8-9 mm., occurs in the 

 Middle States. 



