224 



BRITISH GALLS 



Homop- 



tera 



Diptera 



and are either violet or brown. Sometimes there is 

 atrophy, and the seed loses the normal longitudinal ridges 

 and points. Larvae yellowish. M. E. 



SCHIZOMYIA PIMPINELLAE F. Low 67c| 



Syn. Aifkondylia pimpir^Uae F. Low. 



Connold, Veg. Galls, pi. 119; Plant Galls, fig. 84. 

 Houard, No. 4529. 



The segments of the leat margins bent inwards and 

 turgid, giving rise to a slight swelling on the upper surface. 



Trioza viridula Zett. 671 



Houard, No. 4536. 



COBNACEAE 



Cornus sanguinea Linn. 67. Dogwood. 



Galls in the form of a truncated cone developed chiefly 

 on the under side of the leaf. The cone is-divided into 

 two or three lobes at the apex which is on the inferior 

 surface. Pale green, becoming purple or reddish. Larvae 

 orange-yellow. M. E. Imago, spring, I L (Plate IX. 7.) 



Oligotrophus coRNi Giraud 672 



Syn. Homtomyia comi Giraud. 



Connoldf Plant Galls, fig. 102. Houard, Na 4543. 



Homop- 

 tera 



Acari 



Hymeu- 

 optera 



ERICACEAE 



Calluna vulgaris Hull. 112. Ling. 

 A small tuft of little abnormal branches grouped to- 

 gether above a slightly swollen part of the stem. 



Mytilaspis pomorum Bouchd 673 

 Douglas, 1 888, p. 16. Houard, No. 4575. 



Numerous densely fasciated abnormal branches form- 

 ing a miniature " witch's broom." The leaves are wrinkled 

 and covered with whitish haiis. 



Eriophyes callunae 674 



Houard, No. 4574 (without specific name). The above 

 is a provisional name. 



Vacciniuin Vitis-Idaea Lirni. 67. Cowberry. 



Galls bean-like, appearing on both sides of the leaf; the 

 walls of the larval cavity are at first thick, but become 

 very thin by the time the larva is full fed. Dull green at 

 first, then brownish. These galls much resemble those of 

 Pontania salicis. 



Pontania vacciniella Cameron 675 



Syn. Nematus vacciniellus Cameron. 



Cameron, 1876, p. 190. Connold, Plant Galls, p. 100. 

 Houard, No. 4573. 



