Walshomyia insignis

Rhopalomyia weldi

Walshomyia sabinae

Walshomyia insignis new species.
Gall. This is a somewhat yellowish leaf tip, hardly distinguishable from the normal. The female escapes near the apex. 

Gall. Dark purplish, fusiform, frequently clustered bud galls with a length about I cm. and a diameter of .5 cm. Clusters of six or seven are not unusual though occasionally only three or four, or one or two may develop upon a shoot. One small shoot bore eleven galls ... The galls occur on the subterranean stems or root stalks of Aster macrophyllus [Eurybia macrophylla], pushing up through the dead leaves in the spring and when numerous preventing the development of the foliage. 

This insect occurs in a purplish, somewhat conical, thick walled, apical bud gall with a length of about 1 cm. and a diameter of 3 mm.This gall develops later than that of Walshomyia texana ... When mature the tip splits, forming four or more irregular lobes, the adult escaping from the apex. This species has been reared from Juniperus monospermum from galls collected near Denver, Colo., in 1914, by Professor E. Bethel and from similar galls on Juniperus utahensis [J. osteospermum] collected by Professor Bethel at Gilluly. Utah, and also from apparently identical galls on Sabina sabinoides [J. ashei] collected by J. T. Patterson in April, 1919, near Austin, Texas. 

New species of reared gall midges (Itonididae)