Vol. 5, p. 207-208. June 7, 1926. 



Occasional Papers 



OF THE 



Boston Society of Natural History. 



NEW GALL MIDGES FROM NEW ENGLAND. 



BY E. P. FELT. 



The studies of the last 30 years in this and other countries 

 have demonstrated the occurrence of a rich and varied gall-midge 

 fauna in different sections of the world, the most striking progress 

 along this line being made in certain of the non-gall-making 

 species, two of which are characterized below. Although many 

 species have been described during the above-mentioned period, 

 there are still many new ones and probably a number of new 

 genera yet to be characterized. 



Neocatocha nylanderi, sp. nov. 



The extremely interesting midge described below was collected 

 by Olof 0. Nylander at Woodland, Me., on December 1, 1917, 

 and submitted for study by C. W. Johnson of the Boston Society 

 of Natural History. Mr. Johnson informs me that the specimen 

 was taken in an effort to get a more northern record for the wing- 

 less snow midge, Chionea valga Harris, and adds that it was 

 probably picked up on the snow. It is easily distinguished from 

 other species of the genus by the decidedly longer stems of the 

 flagellate antennal segments. 



Female. — Length 1.2 mm. Antennae extending to the base of the abdomen, 

 rather thickly haired, hght brown, ten segments, the fifth with a stem three- 

 fourths the length of the subcylindrical basal enlargement, which latter has a 

 length one-half greater than its diameter; a sparse, subbasal whorl of long, stout 

 setae and a rather thick subapical band of similar setae; terminal segment 

 reduced, irregularly subcorneal; palpi, first segment short, second with a 

 length over twice its diameter, the third as long as the second, the fourth one- 

 half longer than the third, strongly flattened and somewhat broad; mesonotum 

 shining black; scutellum reddish brown; postscutellum darker; abdomen mostly 

 pale yellowish; wings hyaline; subcosta uniting with the margin at the basal 

 half, the third vein somewhat curved, joining the anterior margin at the distal 

 fifth, the thickened costa extending to the apex of the wing, the fifth vein 

 uniting with the posterior margin at the distal fourth, the sixth strongly curved 

 at the basal third, joining the posterior margin near the basal half; halteres 

 yellowish; coxae and legs pale yellowish; claws long, rather heavy, strongly 

 divergent, simple; the pulvilli rudimentary; ovipositor short, triarticulate, the 

 first segment irregularly triangular, the second short, subquadrate, the third 

 broadly oval, with a length about one-half greater than its width. 



Type.— Cecid. A 1813, N. Y. State Museum. 



Porricondyla sylvestris, sp. nov. 



The male characterized below was labelled Bar Harbor, Me., 



August 12, 1920. It was collected by C. W. Johnson of the 



Boston Society of Natural History, who kindly forwarded the 



specimen for study. The species is related to P. pint Felt, P. 



15 1326 



