THE LEAF BEETLES. 



1177 



L. Phyllecthrus L'ec. 1865. (Gr., "leaf + eating.") 



Small, elongate, nearly smooth species having the eyes oval, dis- 

 tant from the margin of the thorax ; antennae slender, 10- jointed in 

 the male of gentilis, 11-jointed in the other species ; thorax broader 

 than long, sides distinctly margined, base curved ; elytra with very 

 distinct side margins and epipleuraa, the latter narrow ; front coxae 

 contignons ; tibins slender, without spurs ; first joint of hind tarsi 

 longer than the next two together • claws broadly appendiculate at 

 base. One of the four species has been taken in the State and an- 

 other probably occurs. 



KEY TO INDIANA SPECIES OF PHYLLECTHRUS. 



a. Antennae piceous and 11-jointed in both sexes, thickened toward the tip, 

 male, or filiform, female; elytra but slightly wider than thorax. 



DORSALIS. 



aa. Antennae filiform and piceous in both sexes, but 10-jointed, male, 11- 

 jointed, female ; elytra distinctly wider than thorax. 



2179. GENTILIS. 



P. dorsalis Oliv., head, thorax and under side of body yellow, 

 elytra and abdomen black, length 6 mm., occurs "from Washington, 

 D. C, to Missouri and Texas." 



2179 (6853). Phyllecthrus gentilis Lee, Proc. Phil. Acad. Nat. Sci., 

 1865, 208. 



Elongate-oblong, parallel. Head, and often 

 the thorax, entirely yellow, the latter, how- 

 ever, usually with a broad black stripe each 

 side with the extreme margin pale ; elytra 

 sometimes wholly black, more often with the 

 suture, side margins and apex yellow ; under 

 surface and legs yellow, the former some- 

 times piceous; antennae piceous, the three 

 basal joints partly yellow. Thorax slightly 

 wider than long, sides nearly straight; disk 

 smooth, convex and with a vague impression 

 behind the middle. Elytra very finely alu- 

 taceous, without punctures. Length 2.5-4 mm. (Fig. 514.) 



Southern third of State, scarce; Kosciusko County only in the 

 north. May 19- June 23. Occurs on bush-clover (Lespedeza) along 

 roadsides. 



Tribe X. HALTICINI. 



A large group of small or medium-sized, leaf -eating forms, dis- 

 tinguished from the preceding tribe mainly by the fact that the hind 

 thighs are greatly enlarged and thickened for leaping. As a conse- 



