196 BRITISH GALLS 



Bibes nigrum Linn. Black Currant. 

 Homop- Leaves blistered. See No. '446. 

 tera Rhopalosiphum ribis Koch 452 



Bd. Agric. Leaflet, No. 68 (revised 1908). 



,, Apical leaves blistered and deformed. See No. 447. 



Myzus ribis Linn. 447. 

 Connold, Veg. Galls, pi. 106 ; Plant Galls, fig. loo. 453 

 Houard, No. 2794. 



Acari Buds hypertrophied. See No. 451. 



Eriophyes ribis Nalepa 454 

 Connold, Veg. Galls, pi. 62; Plant Galls, fig. 99. 

 Wafburton and Etnbleton, 1902, pis. 33, 34. Houard, ' 

 No. 2793. 



BOSACEAE 



Frunus spinosa Linn. ' 108. Blackthorn. 

 Hymen Hard, globular, gregarious or coalescent growths on the 



optera subterranean roots. See No. 239. 



BlORRHIZA APTERA Bosc. 455 



Connold, Plant Galls, pp. 54, 137, 245. 



Dlptera Leaf thickened along a nerve, usually the midrib, form- 



ing^ a yellow or reddish glabrous pouch on the inferior 



- surface, with a narrow elongated opening on the superior 



one. Larvae yellowish -orange. M. E. Imago, spring, II. 



PUTONIELLA MARSUPIALIS F. Low 456 



Syn. Cecidomyia pruni Kltb. 



Connold, Plant Galls, pp. 82, 245. Houard, No. 3295. 



Homop- Leaf margins crumpled and swollen. Aphis pale green, 

 tera mottled with dark green, and having a black dorsal stripe ; 

 cornicles small, black. 



Hyalopterus PRUNi Fabr. 457 

 Bucktonj ii., in. Houard, No. 3289. 



,, Leaf margins crinkled and swollen. Aphis pale green 



with red eyes, and having one to three green stripes down 

 the back. 



Phorodon humuli Schank 458 

 Buckton, i.j 167. Houard, No. 3292. 



,, Leaves distorted and swollen. Aphis yellowish -green 



with three greenish olive stripes, lower abdominal rings 

 stained ochreous. 



Aphis padi Linn. 459 

 Houard, No. 3290. 



