1232 



FAMILY LI1I. CHRYSOMELID^E. 



Throughout the State; frequent, May 21-October 23. Occurs 

 on morning-glory, bittersweet and sweet potato vines; commonly 

 known as the ''gold-bug'' and in life one of the most brilliant of our 

 beetles. Of it Harris says: "When living it has the power of 

 changing its hues, at one time appearing only of a dull yellow color, 

 and at other times shining with the splendor of polished brass or 

 gold, tinged sometimes also with the variable tints of pearl. The 

 wing covers, the parts which exhibit a change of color, are lined be- 

 neath with an orange colored paint, which seems to be filled with 

 little vessels ; and these are probably the source of the changeable 

 brilliancy of the insect." 



2282 (7105). Coptocycla pukpurata Boh., Mon. Cassid., Ill, 1857, 300. 

 Broadly oval, more convex than bicolor. Above uniform dull red, the 



margins less expanded, translucent ; under surface black ; antennae, tarsi 

 and front tibia? pale. Elytra minutely granulate or alutaceous, each with 

 a small impression on middle of disk ; the rows of punctures fine, feebly 

 impressed. Length 5-5.5 mm. 



Martin County; rare. May 16. Ranges from Pennsylvania to 

 Kansas. 



2283 (7107). Ooptocycla c la vat a Fabr., Syst. Eleut., I, 1801, 39S. 

 Broadly oval. Base of thorax and disk of elytra brown ; 



margins of elytra with pale spot near middle and another 

 much smaller at apex ; under surface pale yellow. Elytra 

 with numerous conical elevations or tubercles, the largest 

 on suture in front of middle. Length 7-7.5 mm. (Fig. 552.) 



Lake, Wells, Putnam and Posey counties; scarce. 

 March 20-September 17. Beaten from linden and oak 

 foliage. A large and easily recognized species. 



Fig. 552. 



2284 (7104). Coptocycla signifera Herbst, Kafer, VIII, 1791, 313. 



Broadly oval. Dull yellow ; base of thorax usually 

 with a large black spot, enclosing two pale ones ; disk of 

 elytra black with irregular yellow spots, margins pale ex- 

 cept near humeral angles ; under surface black, its sides 

 yellow, except two joints of antenna? dusky. Margins of 

 thorax and elytra as in Iricolor. Elytra finely alutaceous, 

 the discal depressions and rows of punctures more irregu- 

 lar than in Mcolor, the punctures coarser. Length 5.5- 

 6 mm. (Fig. 553.) 



Throughout the State; common. February 14- 

 Septemher 25. Occurs on foliage of thorn, buckeye and especially 

 cn that of members of the Convolvulus family. Hibernates beneath 

 mullein leaves and rubbish. Listed as C. qutiata. 



Fig. 553. 

 (After Riley.) 



