NEW GALL MIDGES 121 



Massachusetts by Miss Stebbins/ The female provisionally referred to 

 the above-named genus was reared May 31, 1907. A species of 

 Dicrodiplosis, D. oenitalis, has eJso been obtaiined from this gall and it 

 is impossible, with the present data, to decide which species is the maker 

 of the gall. 



Egg : Length, 0. 1 5 mm. Elongate, narrowly oval, pale reddish yel- 

 low. 



Gall : Length, 1 .5 cm. Greenish white, hollow, pouch-like vein 

 swelling the size of a buckshot and on the underside of Crat&gus leaves. 



Larva: Length, 2.5 mm. Stout, yellowish orange. Head rather 

 broad. Antennae apparently uniarticulate, short, stout, tapering ; breast- 

 bone well developed, expanded anteriorly, bidentate, the shaft semitrans- 

 parent. Skin under high power minutely and longitudinally striate. Ter- 

 minal segment irregularly lobed and rounded. Possibly the larva of 

 Dicrodiplosis veniialis. 



Female : Length, 2 mm. Antennae extending to the fifth abdominal 

 segment, sparsely haired, fuscous yellowish ; 1 4 segments, the fifth with 

 the stem one-fifth the length of the subcylindric basal enlargement, which 

 latter has a length about two and one-half times its diameter and sparse 

 whorls of long, stout setae basally and subapically ; terminal segment 

 somewhat produced, with a length two and one-half to three times its 

 diameter. Palpi : First and second segments short, stout, the third nearly 

 twice the length of the second, the fourth one-half longer than the third, 

 dilated. Face fuscous yellowash. Mesonotum dark brown, the subme- 

 dian lines and the posterior median area fuscous yellowish. Scutellum 

 light fuscous yeUowish, postscutellum dark brown. Abdomen light red- 

 dish brown. Genitalia yellowish. Wings hyaline. Halteres yellowish 

 basally, slightly fuscous subapically. Legs a nearly uniform light fuscous 

 yellov^dsh ; claws long, stout, strongly curved, simple, the pulvilli as long 

 as the claws. Ovipositor short, stout, hardly one-fifth the length of the 

 abdomen ; terminal lobes short, stout, broadly rounded and sparsely 

 setose. Type C. al I 28a. 



Dicrodiplosis venitalis, new species. 



The female provisionally ref ened to the above-named genus was reared 

 September 9, 1907, from a jar containing tumid vein galls on Crataegus. 

 It is impossible to state, with the data at hand, whether this species or 



1 Stebbins, F. A. Sringf. Mus. Nat. Hist.. Bui. 1. p. 39. 1910. 



