THE OIL AND BUSTER BEETLES. 



1361 



''(/. Elytra black without stripes ou disk. 



c. Body beneath clothed with gray pubescence : elytra iu part or 

 wholly gray-pubescent. 

 f. Elytra wholly clothed with uniform gray pubescence. 



2.52(j. CINEKEA. 



//. Elytra black, the narrow margins and suture only gray. 



2.527. MARCINATA. 



cv. Body above and beneath wholly black ; simrs of hind tiljire unequal, 

 the outer one broader. 2528. pennsylvaxica. 



2.52;j (8079). Epicauta tkichbus Pall., Icon. Ins., 1798, 100. 



Elongate, subcylindrleal. Black, opaque; clothed with short, rather 

 dense, recumbent, black or gray pubescence, the gray often forming a mar- 

 ginal stripe and rarely a sutural line on elytra ; head behind the eyes 

 usually red, though often wholly lilaek or with a small red spot in front. 

 Thorax narrower than head, one-half longer than wide, coarsely and densely 

 punctured and with a fine median line. Elytra finely and closely granu- 

 late-punctate. Male with head less shining and more siiarsely punctate 

 than female. Length S-11 mm. 



Throughout the State ; scarce. June 3-August 4. Occurs especi- 

 ally on the hedge bindweed, ('onvalvulus sepiwn L., also on Jersey 

 tea, sweet potatoes, etc. The specimens with head wholly black are 

 apt to be confused with pennsylvanica, but the different punctua- 

 tion of head and thorax will at once distinguish them. 



E. strigosaSeh., thorax usually with two black spots and elytra 

 each with two black lines, length 7-10 ])im., is said to occur from 

 "Pennsylvania to Georgia." 



2.521 (80S2). Epicauta FEKRuaiNEA Say, Journ, Pliil. Acad. Nat. Sci 

 1S21, 29S; ibid. II, 107. 



Elongate, slender. Black, elytra densely clothed 

 with grayish or clay-yellow hair. Head shining, 

 rather sparsely and finely punctured. Thorax slight- 

 ly wider than long, coarsely but not densely punc- 

 tured. Elytra finely granulate-punctate, the sculp- 

 ture almost hidden Ijy the pubescence. Length 4- 

 mm. 



Knox County; rare. July 10. Its range 

 is given as Dakota to New Mexico. 



2.525 (S0l>.3). Epicauta vittata Fab., Syst. Bnt, 

 170S, 2(30. 

 Elongate, slender, subcylindrleal. Under sur- 

 face black, densely clothed with short, prostrate 

 hairs; head, .thorax and elytra dull clay-jvllnw. 

 each witli two black stri]ies. Head broader than 

 (horax, the latter longer than wide. Length 12- 

 IS mm. (Fig. 592.) 



Ill, 



Fig. 592. Line shows natural 

 length. (After Forbes.) 



