278 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



Lachnosterna, although further studies may disprove this conclusion. 

 Dr. S. A. Forbes has listed it as one of the eight species of the genus 

 known to be injurious.^ In our own coUeotions made in following 

 the plow we have encountered the adult tristis but once. A single 

 male in its pupal cell was plowed up April 25, 1911, in an upland clay 

 loam field which was surrounded by general timber. This field had 

 been in corn in 1910, clover in 1909, and oats in 1908, showing that 

 the egg had been deposited when the field was in clover. 



ITONIDA ANTHICI N. SP. (DIPT.) 



By E. P. Felt, Albany, N.Y. 



The striking clusters of pinkish white, flower-like galls produced 

 by this species on cypress, Taxodium distichum, were collected re- 

 peatedly by Dr. W. L. McAtee of the Bureau of Biological Survey, 

 Washington, and forwarded to this office from Mud River, Ark., 

 Carlisle, Miss., and Barachias, Ala. The galls are sometimes so 

 numerous as to dominate the dark green cypress foliage and give the 

 appearance of an ordinary flowering plant thickly set with small 

 blossoms. Dr. McAtee informs us that birds feed upon this gall and 

 upon other cypress midge galls. The larvae winter within the galls, 

 the pupae making their way partly out of the side of the gall and the 

 adults evidently^ appearing in early spring, since this pecuhar deform- 

 ity seenis to arise from a leaf bud and is probably a greatly hypertro- 

 phid leaflet. 



Gall. Blossom-like, a variable pinkish and white. Length 3 mm., somewhat 

 bell-shaped, the margin more or less expanded, sometimes irregularly crenulate and 

 generally enclosing a distinct cup-shaped depression. There is an oval cavity, length 

 1.25 mm., at the base of the gall, inhabited by an orange-red larva. 



Larva. Length 2 mm., oval or narrowly oval, orange-red. Head short, moder- 

 ately broad, the antennae short, tapering, biarticulate. Breastbone distinct, greatly 

 expanded apically and with two widely separated, minute, triangular teeth. Skin 

 coarsely shagreened, posterior extremity broadly rounded, nearly smooth. 



ExuviUM. Length 2 mm., whitish transparent. Thoracic horns rather short, 

 stout, antennal cases moderately stout, extending to the base of the abdomen, the 

 wing cases to the fourth abdominal segment and the leg cases to the sixth abdominal 

 segment, each abdominal segment basally with three or four rows of moderately stout, 

 chitinous spines, the posterior portion irregularly dotted with chitinous points. 



Male. Length 1.25 mm. Antennae i longer than the body, thickly haired, 

 reddish brown; 14 segments, the fifth having stems, each with a length i greater 

 than its diameter. Circumfili moderately long, stout; terminal segment, basal portion 

 of the stem irregular, with a length thrice its diameter, the distal enlargement irreg- 

 ular, produced, with a length more than twice its diameter, obtuse apically. Palpi; 

 first segment quadrate, the second narrowly oval, the third a little longer and more 

 slender than the second, the fourth ^ longer than the third. Mesonotum dark 



iBull. 111. Agric. Exp. Sta., No. 116, p. 449. 



