No.:i04l. THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 573 



variable from light brown to very dark browii or piceous; vertex, 

 pronotiim, sciitelliim between lateral carinas usually lighter brown; 

 frons brown above ocelli, light to whitish on middle third, usually 

 brown or blotched on lower third, often whitish; gense variable from 

 mostly brown to blotched or almost white; abdomen dark; legs light, 

 banded with black; elytra brownish, with a semicircular macula on 

 posterior half of membrane, usually an oblique band on anterior 

 half of membrane, and several spots extending obliquely across 

 clavus and corium; this maculation is within certain limits rather 

 constant and characteristic. Body moderately large, rather broad, 

 variable from 3 to 5 mm. to tip of folded elytra. 



Head rather short, with eyes about as broad as prothorax, some- 

 times slightly or distinctly narrower, oftener as broad or broader, 

 strongly carinate; vertex as long as pronotum or slightly longer, as 

 broad or broader than long, usually narrowed between eyes and some- 

 what produced before them; lateral carinse often very much elevated 

 with sharp carina behind eyes; front margin of vertex variable from 

 almost straight to angulate; frons long, usually rather slender, vary- 

 ing from two to two and thi-ee-fourths times as long as broad, some- 

 times slightly broadened between eyes, converging slightly to apex; 

 median carina forked at apex of head; eyes large, deeply emarginate 

 beneath. Antennas vai-ying in length from one-half to one and a fourth 

 times as long as width of head between antennal sockets; I com- 

 pressed, broader than II, or fully as broad, from two-thirds to three- 

 fourths as long; II subterete, somewhat compressed basally, very 

 rough. 



Thorax rather long, strongly carinate; pronotum from more than 

 one- third to one-fifth as long as scutellum; posterior margin emargi- 

 nate and sharply angled at center; lateral carinas angled sharply 

 apically and extending to posterior margin; scutellum long, acute; 

 forefemora slender, subterete to angled; hind tibiae slender, long; 

 calcar from one-half to two-thirds as long as basal tarsus, hind 

 margin coarsely 7 to 10 dentate. Elytra long, maculate, somewhat 

 squared at apex. 



Male pygofers broad, short; anal tube with an acute, recurved 

 process on ventral margin, variable in length from one-third the 

 diameter of anal tube to twice that length, and from slender to board 

 and stout; anal style moderately long; genital styles variable in 

 length, sinuate, usually enlarged subapically and often more or less 

 compressed, constricted beyond subapical enlargement, apex broad- 

 ened, compressed, produced on each side into an acute tooth; some- 

 times pulverulent; with a slender process at base of each style. 



Redescribed from more than 200 males and females from the follow- 

 ing widely separated localities: In the United States — Pennsylvania 

 (Wirtner) ; Virginia, Illinois, Minnesota (Baker) ; Kentucky (Riley) 



