I96 NEW YORK STATE MUSEUM 



Lasiopteryx carpini Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 119. Separate, p. 23 (As- 

 phondylia) 



1908 N. Y. State Mus. Bui. 124, p. 342 (Dasyneura) 



This species was taken on ironwood or blue beech, C a r p i n u s 

 americana, at Albany, N. Y., June 21, 1906. 



Female. Length .75 mm. Antennae extending to the middle of 

 the abdomen, sparsely haired, dark brown, yellowish basally; 14 

 segments, the fifth cylindric, with a length two and one-half times 

 its diameter, circumfili distinct, produced apically. Palpi; the first 

 segment short, slightly expanded distally, second a little longer, the 

 third suboval, a little longer than the second, the fourth more 

 slender, elliptical and a little longer than the third. Face pale 

 yellowish. Mesonotum fuscous orange with submedian lines yel- 

 lowish, sparsely ornamented with fine setae. Scutellum pale yellow- 

 ish with sparse apical setae, postscutellum fuscous yellow. Ab- 

 domen a pale fuscous orange, rather sparsely clothed with fuscous 

 setae. Wings hyaline, costa dark brown; halteres pale yellowish. 

 Legs fuscous, pale yellowish basally, tarsi slightly darker; claws 

 slender, strongly curved. Ovipositor short, the lobes orbicular. 

 Type Cecid. 346. 



Lasiopteryx crispata Felt 

 1914 Felt, E. P. Psyche 20:111 



One female provisionally referred to this genus was reared 

 August 22, 1912, from a jar containing oval, yellowish blister leaf 

 galls onOakesia sessilifolia collected by Miss Cora H. 

 Clarke at Magnolia, Mass. 



Arnoldia KierT. 



Janetia Kieff. 



1895 Kieffer, J. J. Wien Ent. Zeit, 147 



1896 Soc. Ent. Fr. Bui. 65, p. 236 (Janetia) 



1897 Syn. Cecid. Eur. & Alg., p. 15 



1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15 '.337 



191 1 Felt, E. P. N. Y. Ent. Soc. Jour., 19:44 



Members of this genus may be recognized by the quadriarticulate 

 palpi, the 12 to 13 sessile antennal segments and the nearly straight 

 third vein uniting with costa near the wing apex. The two latter 

 characters serve. to separate it from the American Neuromyia. The 

 basal clasp segment of the male genitalia is not greatly dilated as 

 in Macrolabis. The female has a slender, tapering ovipositor about 

 as long as the abdomen. The type isCecidomyia quercus 

 Binn. Arnoldia g e m m a r u m Rubs, produces a smaller, 

 flattened, woolly gall on oak than does Dryomyia circinans 

 Giraud. Balsam mounts of the type, prepared by Professor Rub- 

 saamen were studied by the author in the Museum of Natural 

 History at Berlin. No American forms have been recognized. 



