68 AN ACCOUNT OF BRITISH FLIES, 



Legs almost black, white beneath. Oviduct long, the third segment 

 yellow. Male genitalia dark, 



C. galeohdolontis , Wtz.*=C Stru/nosa, Bremi. 



The larvae live in the stalks of Galeol>dolo?i hitetcni, and form woolly 

 galls. The description of this species is taken from Inchbald's paper 

 quoted below. 



^ Antennae with joints not pedicelled as in the ? . Wings limpid, 

 gray pubescence in both sexes, the anal fork extending to the inner 

 margin, more deeply coloured in (^ than in ? . Halteres darker 

 (than ? ). Abdomen prominendy forcipated. Legs longer in com- 

 parison of its size. 



$ Antennse fuscous, 13-jointed, pedicellated. Thorax with disc 

 pale fuscous. Halteres pale yellow. Oviduct pale yellow. Bremi 

 in his monograph gives a good figure of the gall of this species 

 (PI. IL, Fig. 26), and says concerning it : " In den gallen, welch ich 

 dieses Jahr Ende Februaris fand, und welch vorziiglich gross und 

 ganz frisch waren beobachtete ich die Larren bereits eingesponnen, 

 aber noch nicht in nympten verwandelt."t 



The imago appears in May and June. 



C. salicina, Schrk. = C. Frischii, Bremi. 



Imago. — Brownish-black ; face and palpi brown, yellowish bands 

 on the side of thorax. Abdomen pinkish-brown, with black bands on 

 the dorsum \ tawny beneath in the $ . Costa of wings thick and 

 almost black ; second longitudinal vein very nearly straight, ending 

 near tip of wing. Antenna, 16-17-jointed in c?, as long as body ; in 

 the ? always i6-jointed, about half the length of body. Legs with 

 silvery hairs on under-surface ; halteres white, gradually becoming 

 dusky at the apex. 



Walker says, " The larvae live in the withered tips of the young 

 shoots of Salix Caprea and S. alba, and also according to MuUer.":}: 

 They live in the young terminal leaflets of the shoots, which wither 

 away and form a bud-shaped nidus, three to eight larvte in each. — 



C. serotina, Wtz. 



The larvae live in the tops of the shoots of Hypencum humifusuni ; 

 they drop to the earth before pupating. 



Imago. — Blackish-brown ; head, antennce and palpi brown ; 



antennae, i6-jointed in ? ; 16-17-jointed in J. The halteres are 



pure white in the living specimen, drying yellowish white. The 



abdomen of c? is sometimes tawny ; each segment havi-ng black 



hairs on the posterior border ; in ? the abdomen is flesh-coloured,. 



* For more detail refer to Ent. W. Int., 1S61, p. 69. 

 t See Ent. W. Int., 1861, p. 56. 

 X Ent. Mo. Mag., vi., 1S69, p. 109. 



