130 



The Galls of Esse a- ; a (\mtrihution to a 



larva pupates within the mostly 

 unilocular gall. Aulax GLEcnoMiE, 

 Hartig. (Fig. 15). 



Plantagine^e. 



Plantago lanceolata, L. Flower- 

 stalk. Greenish, succulent, oval 

 swellings of the peduncles or flower- 

 stalks. The gall is about J in. long 

 by ^ in. in diameter, tapering at 

 both extremities into the stalk ; it 

 is strongly ribbed, and is uni- 

 locular. The larva pupates wdthin 

 the gall, and the perfect beetle ap- 

 pears in the autumn. Mecinus pyraster, Herbst. 



Fig. 15. AnJax GlecliomfP. 



PoLYGONACEiE. 



Polygonum amphibium, L. Leaf. The leaf-margin is 

 thickened or rolled, mostly on both sides, and is orange or red 

 in colour. The larvae pupate within the gall. Cecidomyia 

 Persicari^, Linne. • 



Polygonum Persicaria, L. Leaf. Similar galls to those 

 above described, produced by the same gall-gnat. 



EuPHORBIACEiE. 



Buxus sEMPERviRENs, L. Leaf. The leaves are swollen 

 and slightly discoloured. The yellow larvae pupate within 

 the pseudo-gall. Diplosis Buxi, Laboulbene. 



The very common terminal leaf- bladders are produced by 

 PsYLLA Buxi, Linne. 



Urticaceje. 



Urtica dioica, L. Leaf, leaf-stalk, flower-stalk. The galls 

 are mostly globular, hairy, fleshy swellings, either on both 

 surfaces of the leaves themselves, or on the leaf- or flower- 

 stalks, pale green in colour, but fi-equently rosy ; they occur 

 singly or occasionally in masses. The whitish larvae leave the 

 galls and pupate in the earth, Cecidomyia Urtice, Perris, 



