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* 
78 AN ACCOUNT OF BRITISH FLIES. 
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 
3. Abdomen yellow, white hairs, base black, 
D. helianthemi, Hardy. 
The larvz 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 larvze 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 zmago is very small and yellowish-brown ; the thorax is yellowish 
with brown markings ; eyes brown ; scutellum reddish-brown ; face, 
antennee and palpi yellowish ; the antennz are 14-jointed in the @. 
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. 
D. dunt Laboulb.{ 70 Hava, Sch. 
D. Schineri. 
The larvz live in blister-like galls on the leaf of Buxus sempervirens, 
and pupate in these inflated patches. Laboulbéne t gives a good 
series of figures relating to this species. 
Jmago.—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 9; hairy. 
Halteres yellow at base, red at the tips. Abdomen yellow, extremity 
deep orange in?, brown in g. Ovipositor brown. Feet yellowish ; 
thighs dark gray, black hairs, ‘Tarsi yellow; first joint shortest ; 
second very long. The body is hairy. PI. ii. (7). 
D. botularia,{; Wtz.— The Ash Midge.” 
=C. fraxine, 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 
off 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, pl. ix., figs. 1 to 17. 
{ Gard. Chron., Dec. 31, 1870.—Miiller. 
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