610 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
14. I'm: Ci.i.ns fjRAFHISUBl 
Oraphitmrui triangultfer | Bald.) 
L iro borrowing ander the old bark <>f Celtit Immmm, partly in the bark and partly 
in the wood; issuing, in July. Ma loug-horned beetle. 
Fig. 200.— The Hackberrv Graphisurus; a, larva; b. pupa, ventral view ; c, female beetle- 
enlarged; d. month-parts of larva from beneath— still more enlarged. (Original.) 
This insect is not uncommon in the Southwestern States, but was 
described by Haldemau in 1847 (Trans. Am. Pliila. Soc, vol. x, p. 45) 
from specimens obtained iu Alabama. It is a rather pretty beetle, 
about half au inch long, clothed with fine pubescence and mottled with 
brown and yellow, the legs and feelers annulate with yellow. Its food- 
habits and early states have uot, I believe, heretofore been recorded. 
My notes of the insects obtained duriug the cotton-worm investigation 
show that it was not uncommon under the bark of the Hackberrv, affect- 
ing diseased or partly dead trees, so that it injures chiefly in hastening 
the decay of such timber. Larva? and pupa? were fouud by Mr. Schwarz 
at Columbus, Tex., uuder the bark of Celtis texana, June 15, 1879. and 
the adult insects were obtained about the end of July. 
The larva and also the pupa are very similar to the like states of allied 
wood-borers, and any description of these states, to be of value, should 
be based on a comparative study of related forms. Oiir knowledge is 
too fragmentary at present to allow of such comparison and the follow- 
ing brief description is based merely on the species under treatment. 
Larva. — Average length 2'2 mm . General color yellowish-white. Mandibles and 
ring about the bead connecting with the base of the mandibles, reddish-brown : head 
a little more than one-half the width of the prothoracic joint: mandibles strongly 
tapering from the base, tip slightly <xi -avated or bideutate — the lower tooth project- 
ing somewhat beyond the upper: elypens trapezoidal, more than twice as wide as 
long, marked with six deeply impressed lines; labrum rounded, tip truncated, 
densely clothed on exterior edge with yellowish hairs; antenna} light-colored, three- 
jointed: two basal joints Snbeqnal, tip of second joint truncated, armed with hairs 
and bearing the minute apical joint near its outer margin; labrum and maxillae 
clothed with yellowish hairs : maxillary palpi apparently three-jointed, first joint 
