1174 



FAMILY LIII. CHRYSOMELIDxTC. 



tennse and a line on outer side of tibiae and tarsi, brownish. Thorax twice 

 as broad as long; disk with a shallow fovea each side, very sparsely and 

 finely punctate. Elytra slightly widening from base to apex, rather coarsely 

 and closely punctate and with an irregular depression near the suture on 

 apical third. Length 6-6.5 mm. 



Vermillion County; rare. July 21. Dury has taken this hand- 

 some beetle in numbers near Cincinnati on the spiderwort, Trades- 

 cantia virginiana L. He states that it is the most active Chryso- 

 melid known to him, flying like a Cicindela 50 to 100 feet before 

 alighting, and that it occurs only in late June and July, the males 

 disappearing by July 15th. It probably occurs throughout the 

 southern third of Indiana. 



XL VIII. Phyllobrotica Eedt, 1849. (Or., "leaf + gnaw.") 



Elongate-oblong, black and yellow beetles, having the head 

 transversely grooved between the eyes, which are nearly round and 

 prominent; antennas slender, longer in the female, the third joint 

 longer than second; thorax transversely quadrate, sides nearly 

 straight, disk usually with depressions; elytra parallel without side 

 margins or separate epipleurse; tibia; without spurs; first joint of 

 hind tarsi scarcely as long as the next two; claws appendicular 

 and divaricate. Five species have been taken in the State. 



KEY TO INDIANA SPECIES OF PHYLLOBROTICA. 



a. Head black, front pale. 



b. Elytra yellow, with two piceous spots on each. 2173. decorata. 

 bb. Elytra each with two black stripes. 2174. vittata. 



aa. Head entirely yellow. 



c. Last ventral of male with a shallow longitudinal impression ; elytra 



piceous, with suture and sides yellow; abdomen black, sparsely 

 pubescent. 2175. discoidea. 



cc. Last ventral of male with a deep cup-shaped cavity. 



d. Abdomen dull yellow, sparsely pubescent ; elytra as in discoidea. 



2176. LIMBATA. 



dd. Abdomen black, densely pubescent ; elytra yellow with a subsutural 

 and short subapical marginal stripe black. 2177. lengi. 



2173 (6847). Phyllobrotica decorata Say, Journ. Phil. Acad. Nat. Sci., 

 III. 1824, 459 ; ibid. IT, 223. 

 Elongate, parallel. Front of head, thorax and legs yellow ; elytra yel- 

 low with two black or piceous spots, one at base smaller aud oval, one be- 

 hind middle oblong; under surface and antennae piceous, the three basal 

 joints of latter yellow. Thorax broader than long ; disk smooth, basal edge 

 sinuate. Elytra very finely and sparsely punctate. Length 5.5-7 mm. 



Lake, Steuben, Starke, Kosciusko and Crawford counties; scarce. 

 June 5-July 2. Occurs on foliage of various kinds along the edges 

 of marshes. 



