CECIDOMYIA. 77 



c. Joints of the antennae not or hardly petiolated. Cubital vein 



emerging from a flat radicle. Subgen. Dirhiza, Loew. 

 c c. Joints of the antennae petiolated in both sexes, their number 

 indeterminate. Cubital vein emerging from a forked radicle, 

 joining the costal behind the tip of the wing. Subgen. Epidosis, 

 Loew; Winn. 

 d. Body yellow, or tawny. 



e. Wings limpid, or nearly so. Species 147-149. 

 e e. Wings greyish. Species 150, 151. 

 e e e. Wings brownish. Species 152-157. 

 d d. Body black. Species 158, 159. 



a a. Anal vein not forked. Cubital vein joining the costal behind the 

 tip of the wing. Subgen. Asynapta, Loew ; Winn. 

 b. Cubital vein emerging from a forked radicle. Transverse veiulet 

 very oblique, emerging from the base of the subcostal vein. 

 Species 160. 



b b. Cubital vein emerging from a flat radicle. Transverse veinlet 

 between the base and the tip of the subcostal vein. Species 161, 

 162. 



1. rosaria, Loew, Pr. Pos. Gymn. 35. 23 (1850); Winn. ; Hardy, 

 Scot. Gard. iii. 45 (1854). Nigro-fusca, subtus argenteo hirta, palpis 

 flavo-fuscis, antennis 20-24-articulatis, thoracis lateribus apud alas car- 

 neis, alis ci nereis hirsutie nigro-cinerea, halteribus fulvis apicefuscis, ab- 

 dominis incisuris ferrugineis, pedibus supra nigro-fuscis subtus argenteis. 

 Long. l|-2 lin. 



Thorax with two stripes of thick-set hairs, which appear yellowish 

 in some aspects, whitish in others. Costal, subcostal, and cubital veins 

 black, stout ; cubital ending at hardly in front of the tip of the wing, 

 more thickened in the middle than that of the other species of this 

 subgenus ; second branch of the anal vein curved obliquely and not 

 abruptly to the hind border. Male. Antenna twenty- to twenty-four- 

 jointed, as long as the body ; joints towards the base longer than their 

 petioles; middle and apical joints as long as their petioles. Fern. An- 

 tennae twenty-two to twenty-four-jointed, half the length of the body. 

 Oviduct of moderate length. 



Forms rosette-like galls on Salix alba, caprea, aurita, cinerea, 

 and depressa. Noticed byPrisch (Beschr. xii. 7), and byDeGeer 

 (Ins. vi. 155. 27). (E. S.) 



2. Salicis, Schr. Fn. Boic. iii. 69. 2310 (1798); Loew; Winn.; 

 Hardy, Scot. Gard. iii. 13 (1854). salicina, Bouche. Nigra, anten- 

 nis nigro-fuscis 20-24-articulatis, thoracis lateribus apud alas carneis, 

 alis nigro-cinereis, halteribus obscure fuscis, femoribus tibiisque subtus 

 argenteis ; Fcem. abdominis incisuris ventreque carneis. Long. 1^-1^ 

 lin. 



Thorax with two stripes of yellowish-white glistening hairs. Body, 

 wings, and legs very pubescent ; hairs of the body and of the legs 



