NEMATOCERA. 79 



are distorted and crumbled ; with thickened mid-rib ; this is enlarged 

 chiefly on the under surface of the leaf. The sides of the leaves are 

 folded over, and they resemble a pod. These galls are pubescent. 



Each cell contains a single larva, reddish-yellow in colour. When 

 the larvie require to fall to the earth to pupate, the galls, through 

 lack of nutriment, split, and the larvce escape by this crack. Pupa 

 skin silvery white ; three weeks in this state, Fig. 12 (6). 



Imago. — Reddish-yellow; three pale brown streaks on thorax ; 

 halteres white ; abdomen brown, hind border fringed with white 

 hairs. Legs brown, white pubescence. Wings grayish, violet irides- 

 cence, veins brown. Antennae 26-jointed in $, 14-jointed in $ . 



D. li?iari(B, Wtz. 



The larvre live in tufts formed on the tips of the buds of Lmaria 

 tndgaris. They pupate in the same place. 



The imago is yellow ; the antennae brownish-yellow ; thorax brown, 

 with three dark bands or stripes. Abdomen brownish-yellow; legs 

 brown, yellowish white underneath. Wings covered by a light 

 pubescence, veins yellowish. Halteres pale. Antennae of $ 26- 

 jointed, very much longer than the body ; in $ the antenna are 

 14-jointed, shorter than body. Third segment of oviduct white. 



j Tipula J)ini, Deg. 

 I Cecid. pini, Mg. 

 D. piiii, Deg. = -' C. pini-mari/zmce, Du. 

 I C. piiosa, Bremi. 

 \C. laterella, Zett. 



The larva oi pini have rows of fleshy setiferous caruncles along the 

 back, with two setiferous tubercles on the last segment. They live 

 on Pimis sylvcstris. This larva is figured by Perris, who evidently 

 mistook the dorsal for the ventral surface, as was also done by Dufour. 

 The cocoons are resinous structures on the pine-leaves. They 

 appear to inhabit almost any species of pine. 



The imago is dark brown to black ; antenna yellowish, palpi tawny ; 

 sides of the thorax and abdomen reddish-brown, becoming brown 

 after death. Wings pellucid, veins dark, halteres light gray. The 

 antenna in the c^ longer than the body. In the ? 13-jointed, about 

 half the length of body, the joints four or five times the length of 

 their petioles. Legs dusky, with white or silvery pubescence on the 

 under surface. The whole insect may sometimes have a dirty white 

 pubescence on it. The oviduct is short, with two small roundish 

 valves, light brown to yellow ; J organs brown. 



