NEMATOCERA, 81 
D. flava, Mg.= Cec. hilarella, Zett. 
The ¢ yellow; with black head. Antenne dark brown, 16-jointed, 
as long as the body; joints never longer than their petioles, the latter 
yellow, the joints are alternately longer and shorter. Wings opal- 
-escent ; veins faint and yellowish ; first longitudinal less than half 
length of wing; second longitudinal vein slightly curved ; second 
branch of anal (3.4) curved obliquely to the hind border. Halteres 
pale. Legs long and slender; pale yellow. Length 1 lin. 
The larvee live in rosettes on the stalks of corn, (Die Larve soll 
nach Roser I. c. in Getreidehalmen leben.) 
D. jacobee, Lw. 
The larvee live in the flower-heads of Senecio Jacobea, 
Sus-GENus.—Hormomyia, Lw. 
HT, Fagi, Hartig. 
This species, which is common all over Europe, is most abundant 
‘in Switzerland and in England. The galls in the former place seem 
to be of a pyramidal shape, in England they are horn-shaped ; both 
upon the upper surface of beech-leaves (Fagus sylvatica). According 
to some accounts the galls drop off and the larve pupate in them. 
Jmago.— Dorsum blackish-brown, with three narrow stripes ; abdo- 
men flesh-coloured, with gray hairs. Antenne of g 24-jointed, 
petiolate, of 2 shorter and sessile. Wings brownish, with gray hairs, 
but appear white against a dark background ; base of second longi- 
tudinal vein hardly discernible ; third longitudinal bent in front in a 
rectangular manner, lower branch only visible at base, upper hardly 
discernible, the fold almost looking like a vein, 2-24 lin. (Hartig— 
Jahres-bericht, 1, p. 4, 641 (1839). Pupa, Fig. 5, Taf. i., vol. viii., 
Lin. Ent. Winnertz. /a/pi, Figs. 22 and 23. Wéing, Fig. 8, Taf. ii. 
Antenne, Fig. 9, a, b, c and d, Taf. iii. 
7, capree, Wtz. = C. capree, Hardy. 
The larvz of this species live in pustule-shaped galls on the leaves 
of Salix caprea, aurita and oleifolia, and pupate under fallen leaves, 
according to Winnertz. 
The zmago is dark reddish-yellow, with three dark stripes on the 
dorsum, of which often only the middle one exists in fragments. 
Antenne shorter than body, 14-jointed, petiolate in @, sessile in 9. 
Wings large, whitish with grayish-white hairs ; second longitudinal 
vein ending in the extremity of the wing, its base very weak ; third 
longitudinal vein bending in front in the form of a bow; ? to 1 lin. 
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