TENTHREDINID2E. 



225 



with a sliort black stripe on each side of the thorax. The 

 hr\:v :ire about half an inch long, of a pale dirty green, yel- 

 lowish beneath, striped with green, and when full-fed yellowish 

 all over. They are social, and may often be found in consider- 

 able numbers on a single needle of the pitch-pine. The larva; 

 spin tough cocoons 

 among the leaves, 

 and the flies appear 

 during August, but 

 probably in greater 

 n umbers in the 

 spring. 



These slugs can 

 be best destroyed 

 by showering them 

 with a solution of 



carbolic acid, pe- 

 troleum, whale oil Fig. 153. 

 soap, or tobacco water. Mr. Fish has sent me the larvae of a 

 saw-fly, allied to L. abietis, which, in Eastham, Mass., ravaged 

 the young pitch-pines planted in the sandy soil of that region.* 

 The eggs arc laid singly in the side of a needle of the pine ; 

 though sometimes an egg is inserted on each side of the 

 leaf. 



Mr. Riley has described the habits of the White-pine saw-fly, 



of an inch in length when fully grown ; darkest above, and with indistinct black- 

 ish spots upon the sides. The head i - white with a small black dot upon each side. 



" Specimens were taken upon the leaves July 4th. Went into the ground about 

 the 20th of July. The cocoon is formed near rhe surface of the ground of a little 

 earth or sand drawn together. Four specimens came forth about August 22d, all 

 seeming very small for so large larvae." 



*Ou sending specimens of the male and female to Mr. Norton ho writes that 

 this is an undeseribed species, of which ho has prepared the following description : 



" Lophynujrintu-rifftdaJXorton. New Species. Female. Length, 0.30; expanse 

 of wings, (>.(;.> of an inch; antennae seventeon-jointod, short, brown: color, luteous 

 brown, with a black line joining the ocelli, a bla-k stripe down each of the three lobes 

 of the thorax above, and the sutures behind; body paler beneath ; the trochantors 

 and base of (he; tibia? waxen; claws with an inner tooth near the middle; wings 

 \ \ liulitly clouded; cross nervure of the lanceolate cell straight. Male. Length, 

 cpaate <>r wings, o.r>.~> of an inch; antenna? fifteen -join ted, black, quite sliort, 

 with twelve branches on each side, those at the base nearly as long as t'ic -i\th 

 and seventh; apical joint simple, enlarged at base; color of insert black, with the 

 abdomen at apex and beneath yellow-brown; legs the same color at base; below 

 the knees whitis-h. 



15 



