Supplementary Report on Insects Afecting the Stratcberry. 247 



COMMON CHARACTERS. 



Larvss. These root-worms may be known from the crown-borer, to which 

 they bear a strong superficial remembrance, by the absence of jointed legs ifi 

 the latter; and from small white grubs, with which they are often associated 

 in the ground, both feeding alike upon the roots of the strawberry, by their 

 relatively shorter and thicker bodies, by the greatly inferior development of 

 the abdomen, and by the fact that they are not nearly as much arched from 

 before backwards as the grubs. In the root-worms the length is only about 

 twice the breadth, while in white grubs of that size, it is four or i\\'Q times as 

 great. In the former the abdomen is but little longer than the head and 

 thorax taken together, while in smiU white grubs it is at least twice as long. 

 The latter insects have also the posterior half of the abdomen somewhat 

 swollen, round and smooth, while in the root-worms the terininal segments 

 are smaller than the preceding ones, and are at least equally wrinkled and 

 (uberculate. 



The root-worms here treated are all of nearly the same size, .12 to .16 of an 

 inch long by half as wide, and all are white except the head and first segment, 

 which are pale yellowish brown. The segments are twelve in number be- 

 hind the head, with a rudimentary thirteenth one in which the vent is situ- 

 ated. The first segment, the one bearing the first pair of legs, is of a firmer 

 consistence than the others, leatherv and smooth above, and as long as the 

 two following together, and each of the remaining eleven is marked on the 

 back b}'- about three transverse dorsal folds, and by a single fold beneath. 



There is little peculiar in the etternal structure of the segments, and it 

 diflers but slightly from that of a great number of soft-bodied subterranean 

 larvfe. The legs are about as long as their corresponding segments, and are 

 white with the exception of their claws, which are dark brown at the tips. 

 They are provided with a few slender white hairs, which become shorter and 

 more spinedike towards the end of the leg. The head is smooth, somewhat 

 flattened in front, with a few slender, scattered hairs. The clypeus is 

 trapezoidal, narrowing forward, and the labrum is rounded in front. The 

 mandibles are dark brown, with black tips. 



Pap.v. The puppe are .14 inch long bj' .1 inch wide. They are white 

 except the eyes and mandibles, which, when the pupte are mature, show 

 through' the outer envelope, red or blsick. The head is bent against the 

 breast, and the legs folded against the body beneath, the posterior pair being 

 applied against the sides of the abdomen, and the thighs of the anterior pair 

 projecting at right angles. The front of the head is set witii a few long 

 spines with infilled bases, and three transverse rows of similar spines appear 

 ujjon the thorax, one near the anterior border, one near the posterior, and 

 the third intermediate. Six similar hairs appear upon the scutellum, and a 

 row of about six or eight borders each one of the abdominal .segments above. 

 The last three segments are variously armed with spines, differing in .shape 

 and direction according to the genus, and the knees of the last pair of legs 



