78 AN ACCOUNT OF BRITISH FIIES. 



Lives as an ingulbine in the cauliflower ash gall.* It is a small 

 yellowish-brown gnat with black head ; palpi and proboscis pale 

 yellow, a tuft of white hairs on the face. Thorax brownish-yellow, 

 with three brownish-black longitudinal stripes nearly confluent on the 

 (^. Abdomen yellow, white hairs, base black. 

 Z>. heltanthemi, Hardy. 



The larvse live in the terminal leaves of H. vulgare, collecting 

 them into bunches and stopping the growth. They usually are found 

 at the base of these amalgamated leaves, sometimes in great numbers. 

 The larvce have a few hairs on each segment and several apical ones. 

 The anchor process is dark testaceous. Length about one line. 

 They appear in June and July. 



The imago is very small and yellowish-brown ; the thorax is yellowish 



with brown markings ; eyes brown ; scutellum reddish-brown ; face, 



antennae and palpi yellowish ; the antennae are 14-jointed in the 1^. 



Wings moderate-sized, of a yellowish tinge, the veins slightly marked 



with bands having spots of an ash colour, the ends of the bands 



having seven ash-coloured spots on the edge. Halteres pale. This 



species has been described by Hardy in the Annals of Natural 



History, in 1880. 



r, 7 • T 1 lu { Tipnia flava. Sch. 

 D. oiixi, Laboulb.K -^ -^ ' 

 \.D. Schineri. 



The larvae live in blister-like galls on the leaf of Buxiis seiiipervirens, 

 and pupate in these inflated patches. Laboulbene t gives a good 

 series of figures relating tc this species. 



Imago. — Yellowish ; metathorax reddish and of a rather rosy tint. 

 On the back of prothorax are three bands, one median and two 

 lateral, not well defined and slightly brownish. Wings in ? trans- 

 parent and more opaque in the <$ , veins yellowish in ?; hairy. 

 Halteres yellow at base, red at the tips. Abdomen yellow, extremity 

 deep orange in ? , brown in (^. Ovipositor brown. Feet yellowish ; 

 thighs dark gray, black hairs. Tarsi yellow ; first joint shortest ; 

 second very long. The body is hairy. PI. ii. (7). 



n. hotularia.X Wtz.— " The Ash Midge." 



= C. fraxini, Br. 



In many parts of England, but especially in Kent and Surrey, the 



leaves of the ash in sheltered places are seen to turn yellow and fall 



oif prematurely in July and August. They are known as " blighted " 



leaves, a name which may mean anything. These infected leaves 



* Ent. Mo. Mag., 1888, p. 23. 



t Ann. Ent. Soc, France, 1873, pp. 313-326, pi. i.x., figs, i to 17. 



% Card. Chrou., Dec. 31, 1870.— Miiller. 



