THE WHITE-NECKED PINE-BEETLE. 801 



130. The Philadelphia chrysomela. 



Chrysomela philadelphica Linn;eus. 



Order Coleoptera; family Chrysomelid^. 



Feeding upon the leaves from May till September, a very convex broad-oval beetle 

 about 0.30 long, of a dark bottle-green color with white wing-covers sometimes tinged 

 with yellow and having on them numerous spots and dots of dark green with a black 

 line on the suture widened anteriorly and a second line parallel with this on each side, 

 the antennae aud legs rusty red. This is also common upon willows, with other species 

 closely similar to it. (Fitch.) 



131. The pixe chrysomela. 



Glyptoscelis hirtus Olivier. 



Order Coleoptera ; family Chrysomelid.e. 



Feeding on the leaves in May and June, a thick cylindrical beetle resembling the 

 Cloaked Chrysomela, No. 27, but with the pubescence much thinner than in that and 

 the other American species of this genus. Its color is brassy, more brilliant on the 

 under side and tinged with coppery. The male is usually 0.28 and the female 0.35 

 long. (Fitch.) 



132. The Saratoga leak-hopper. 

 Aphrophora saratogensis Fh. var. 



Order Hemiptera ; family Cercopid.e. 



The larvje form masses of froth on the leaves of the white pine in June, acquiring 

 wings the last of July and in August in Maine. Common. (Named by Dr. Uhler.) 



133. The white-necked pine-beetle. 



Dichelonyclia albicollis Burmeister. 



Order Coleoptera ; family Scarab.eid.e. 



A small beetle half an inch long or somewhat less and resembling the Rose bug, No 

 50, in its shape but with wing-covers of a shining brilliant green, becomes quite com 

 mon upon pines about the middle of May, eating the leaves, and continues about a 

 month. It may be distinguished from the several other species of the genus to which 

 it belongs by its thorax having a more distinct but a very shallow groove along its 

 middle. (Fitch.) 



The beetle. — This species has a black head with its fore part dull pale yellow. Its 

 thorax is black and is covered with incumbent ash gray or yellowish hairs, but not 

 so close as to hide the ground beneath, whilst the scutel is densely coated with white 

 hairs. The bright green wing-covers are dull pale yellow along their outer margin 

 and also on their inner edge. They are rough from confluent punctures and show 

 three smooth raised lines on each, running lengthwise. The legs are pale yellow with 

 the hind feet and inner side of the hind shanks black or blackish, and the fore shanks 

 have at their otiter tips two projecting teeth with a small tubercle indicating the place 

 of a third tooth. Its length varies from 0.40 to 0.50. (Fitch.) 

 5 ENT 51 



