220 NEW YORK STATE MUSEUM 



Female. Length 1.5 mm. Antennae extending to the base of the 

 abdomen, sparsely haired, dark brown; 12 segments, the fifth sub- 

 sessile, one-half longer than the diameter; terminal segment sub- 

 conical. Palpi; the first segment rounded, short, stout, the second 

 twice the length of the first, somewhat rounded, the third a little 

 longer than the second, more slender, the fourth one-half longer 

 than the third, more slender. Head and mesonotum black. Scutel- 

 lum red, postscutellum dark brown. Abdomen red, sparsely clothed 

 with blackish hairs. Wings subhyaline, unspotted, costa dark brown, 

 rather thickly clothed basally with narrow scales; halteres yellowish 

 transparent. Legs yellowish brown, tarsi reddish brown; claws 

 stout, strongly curved. Ovipositor short, the terminal lobes some- 

 what stout, broadly rounded. Type Cecid. 17. 



Janetiella ligni n. sp. 



The small, reddish female described below was reared May 8, 

 191 1 from decaying chestnut bark collected at Nassau, N. Y., and 

 infested by various Dipterous larvae, including Winnertzia 

 pectinata Felt. This form presents a superficial resemblance 

 to Miastor. 



Female. Length 1.25 mm. Antennae very short, dark brown, 

 reddish brown basally; 12 sessile segments, the third and fourth 

 rather closely fused, the fifth subcylindric, tapering distally, with a 

 length about three-fourths its diameter and low, broad circumfili 

 at the basal third and subapically suggesting those of Lasioptera; 

 terminal segment narrowly oval. Palpi; first segment narrowly 

 oval, with a length nearly twice its diameter, the second subquadrate, 

 with a length about one-fourth greater than its diameter, the third 

 and fourth subequal, each with a length nearly twice that of the 

 third and dilated apically. Mesonotum dark brown. Scutellum 

 reddish, postscutellum and abdomen orange red. Ovipositor yellow- 

 ish. Wings hyaline. Halteres reddish. Coxae reddish; "femora 

 and tibiae fuscous straw, the tarsi slightly darker. Ovipositor nearly 

 as long as the abdomen, the terminal lobes with a length nearly 

 three times the width, narrowly rounded. Type Cecid. a2ioow. 



Janetiella nodosa Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 123 (separate, p. 27) 



1908 N. Y. State Mus. Bui. 124, p. 372 



The male was taken in the vicinity of pine and around hornbeam, 

 Carpinus c a r 1 i n i a n a, at Albany, N. Y., April 28, 1906. 



Male. Length 1.25 mm. Antennae extending to the middle 

 of the abdomen, sparsely haired, dark brown; i.| segments, the 

 fifth with a stem one-third the length o\ the stout basal enlargement. 

 Palpi; the first segment short, the second a little Longer than the 

 first, swollen basally, the third more slender, one-half longer than the 

 second, the fourth one-fourth Longer than the third. Pace and 



