KEY TO THE LONG-HORNS. 



yellow pubescence; length, nearly, or quite, .75 in. On 



various deciduous trees, also on grape 



Elaphidion mucronatum. 



Antennal spines small; femora not spinose at tips. 

 Elaphidion unicolor. Uniform reddish-brown, very 

 sparsely pubescent; pronotum sparsely and irregularly 

 punctate; elytra with a short spine on tip of each. Larvae 

 bore in twigs of red-bud, plum, and (?) oak. E. incertum. 

 Dark reddish-brown, mottled with small patches of grayish- 

 brown pubescence; pro thorax almost globose, wider than 

 long, sides rounded; small elevations, sometimes connected, 

 on each side of polished median line of pronotum ; each 

 elytron with two short spines at tip. E. villosum. (Plate 

 LXXXII.) Dark brown, clothed with grayish-yellow, 

 somewhat mottled pubescence; pronotum rather rough 

 and with coarse, deep punctures; the outer of the two 

 spines on the tip of each elytron the longer. The larva 

 is the Pruner. It breeds in a large variety of deciduous 

 trees, developing in the heart of a small shoot and, when 

 full-grown, girdling the shoot from within, so that it falls 

 in the first high wind. Pupation and hibernation usually 

 occur in this fallen twig, but the twig does not always fall. 



Stenoptini. (See page 340.) 



Molorchus bimaculatus. Dull black, with sparse, long, 

 grayish hairs; elytra scarcely longer than the pronotum, a 

 large, dull, yellow spot often nearly covering each elytron; 

 antennas and legs reddish-brown; less than .3 in. long. 

 Breeds in dead hickory, maple, ash, dogwood, red-bud, 

 and walnut. 



Callimoxys sanguinicollis. Dull black; pronotum of 

 male red, with narrow, black, apical, and basal margins; 

 elytra brownish, elongate awl-shaped; femora swollen; 

 hind legs yellow, the tips of the joints black. 



Trachyderini. (See page 341.) 



This is a large tribe in the South and Southwest, but 

 only four northern species will be mentioned here. 

 i. Pronotum not shining, its sides with a spine or large 

 tubercle; length not less than .5 in 2. 



345 



