1222 FAMILY L1IL CHRYSOMELID.E. 



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 tibia?; claws appendiculate. 



2262 (7057). DIBOLIA BOREALIS Chev., Guer. Icon. Kegue Anim., 1845, 307. 

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



bluisb ; antenna? and legs reddish-yellow, bind 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, urnboue 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 rum. 



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

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

 breed. 



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



Head oval, deeply inserted; front nearly vertical without carina 

 or distinct tubercles ; antenna 1 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 tibia*; hind tibia? 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 tibia? ; 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. CONVEXIOR. 



2263 (7058). PSYLLIODES PUNCTULATA Melsh., Proc. Phil. Acad. Nat. Sci., 



Ill, 1847, 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 slightly 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. 



