126 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



E. Outer branch of first sector not forking again until 

 some distance beyond its anastomosis with the inner 

 branch, rarely forming a closed anteapical cell ; 

 face brownish fulvous without accessory markings. . 



brunneiis O. & B. 



EE. The outer branch of first sector forking at or before 

 its juncture with the inner branch, often forming an 

 anteapical cell ; face yellow with accessory black 



markings lachry^nalis Fh. 



CC. Nervures of elytra usually alternately light and dark, the outer 

 anteapical cell long and narrow. 

 D. The cross nervure between the first and second sectors 



broadly white — male antennas without discs 



monilifercc, O. & B. 



DD. The cross nervure of elytra not falling in a light band. 

 E. Species 5 mm. long or over, dark colored. The face 

 with six longitudinal stripes below, especially 

 noticeable in the male ; male antennae with mod- 



era^^e discs at the end of longer filaments 



a/ternatus Fitch. 



EE. Species smaller, not over 4.5 mm., lighter colored, 

 face pale greenish or yellowish without stripes be- 

 low, male antennae with very large discs on fila- 

 ments scarcely the length of the discs 



verticis Say. 



AA. Crest of the vertex without distinct round spots. 



B. Male antennae without discs, species uniformly tawny or becom- 

 ing darker, with transverse band on elytra. 



c Species 5 mm. or under riifus G. & B. 



CC. Species larger, over 5 mm iiiexicanus n. sp. 



BB. Male antennse with distinct discs, species greenish or with darker 

 markings on the sutures. 



C. Species with distinct color markings on pronotum, scutellum 

 or sutural margin of elytra. 



D. A dark stripe along the sutural margin of elytra often 

 interrupted by a light crescent (male antennal discs 



elongate) suiuralis Fh. 



DD. Pronotum and scutellum more or less marked with 

 fulvous fading out along the suture (male antennal 



discs nearly circular) anioemits V. D. 



CC. Species nearly unicolorus, the scutellar angles rarely black. 

 D. Size large (the largest in the genus), more than 5 mm. 

 long. 



E. Elytra pale greenish, the outer fork of first sector 

 forming a triangular anteapical cell before curving 



away to the costa, male antennal discs large 



pallidus Fitch. 



