1222 



FAMILY LIT!.— CHR YSOMELJD.F. 



denticulate at tip, terminated by a rather long and broad spur, 

 which is deeply emarginate at tip ; first joint of tarsi one-third the 

 length of tibise; claws appendiculate. 



2262 (7057). Dibolia bobealis Chev., Guer. Icon. Regne Anim., 1845, 307. 

 Oval, slightly oblong, convex. Piceous bronzed, usually cupreous or 



bluish ; antennae and legs reddish-yellow, hind femora piceous, bronzed. 

 Thorax twice as wide at base as long, apex but little wider than the length, 

 sides curved ; disk closely punctate with fine and coarse punctures inter- 

 mingled. Sides of elytra continuous with those of thorax, umbone promi- 

 nent ; disk with rows of rather fine, close-set punctures, the third and sixth 

 rows often in part confused ; intervals broad and flat, the second, fourth 

 and sixth with coarser punctures than the others. Length 3 mm. 



Throughout the State; frequent. April 15-June 2. Occurs on 

 plantain (Plantago major L.) in the leaves of which the larvee 

 breed. 



LXXII. Psylliodes Latr. 1825. (Gr., "flea + like.") 



Head oval, deeply inserted; front nearly vertical without carina 

 or distinct tubercles; antenna^ 10-jointed, separated at base, joints 

 2, 3 and 4 nearly equal, 5 to 9 gradually slightly shorter, tenth 

 longer, acute at tip. Thorax broader than long, narrowed in front, 

 base broadly curved and with a distinct marginal line ; hind femora 

 much thickened, sulcate beneath for the tibial; hind tibiae broader 

 toward the apex, ending in a short spur, the tip prolonged beyond 

 the union of the tarsi and with a border of short hairs ; hind tarsi 

 slender, first joint more than half the length of tibiae; claws simple. 

 Two of the four known species have been taken in the State. 



KEY TO INDIANA SPECIES OF PSYLLIODES. 



a. Elytral stria? feebly impressed, the punctures closely placed ; last ven- 

 tral segment of male distinctly impressed. 2263. punctulata. 

 aa. Elytral stria? not impressed, the punctures well separated; last ventral 

 of male convex, not impressed. 2264. convexioe. 



2263 (705S). Psylliodes punctulata Melsh., Proc. Phil. Acad. Nat. Sci., 



Ill, 1S47, 166. 



Elongate-oval, little narrower in front, convex. Piceous or dark bronzed, 

 shining; antenna? with three basal joints pale, the remainder brownish; 

 front and middle femora piceous, the hind ones bronzed ; tibia? reddish-yel- 

 low, darker at middle. Thorax one-half wider at base than long, obliquely 

 truncate at front angles; disk alutaceous. rather coarsely but not densely 

 punctate. Elytra not wider at base than thorax, punctures rather coarse; 

 intervals sligbtly convex, each with a single row of fine punctures. Length 

 2.3-2.7 mm. 



Lake, Starke and Posey counties; scarce. June 2-July 21. 

 Said to occur on rhubarb and garden weeds. 



