FIELD BOOK OF INSECTS. 



Cerambycini. (See page 340.) 



1. With six cross-bands of yellow pubescence, two on 

 pronotum and four on elytra. West of the Alleghanies. 

 Larvae bore in dead beech and maple. Dryobius sexfasciatus. 



With not more than one yellow cross-band 2. 



2. Scutellum acute, triangular, pronotum with a short 

 spine on each side; antennas of female about the length 

 of the body, of the male longer; brownish, with sparse, 

 fine, gray pubescence; each elytron with two short spines 

 at apex and usually with an oblique, yellow blotch in front 

 of the middle; length varies from .6 to 1.3 in. Larvae in 

 hickory, oak, and plum ' Chion cinctus. 



Scutellum rounded behind 3. 



3. Each elytron with two pairs of elliptical, elevated, 

 ivory-like spots on each; pale brownish-yellow. Larvae 

 bore in hickory, ash, and honey-locust 



Eburia quadrigeminata. 

 Elytra without pairs of ivory-like spots 4. 



4. Femora not distinctly club-shaped; antennal joints 

 and elytra with spines 5 



Femora distinctly club-shaped; elytra without spines 

 at tip. Tylonotus bimaculatus (antennae grooved on 

 the outer side; two rounded, yellow spots on each elytron; 

 .5 in. long. Larvae in ash.) and Heterachthes (antennae 

 not grooved or hairy; less than .5 in. long). H. quadri- 

 maculatus is brownish-yellow with pale spots (sometimes 

 tip also pale) on each elytron. Larvae in hickory. H. 

 ebenus is dull black. 



5. Not less than .75 in. long 6. 



Usually less than .75 in. long 7. 



6. Dark brown, with irregular spots of short, grayish 

 pubescence; pronotum without spines on sides. Occurs 

 beneath the bark of walnut, hickory, and hackberry. 



Romaleum atomarium. 



Reddish-brown with uniform pubescence of the 

 same color; pronotum with a small tubercle each side of 

 the median line. Larvae bore in oak and probably other 

 trees Romaleum rufulum. 



7. Antennae and elytra with long spines; femora spinose 

 at tips; dull reddish-brown, irregularly clothed with grayish 



344 



