REPORT OF THE STATE ENTOMOLOGIST IQI2 191 
than the third. Entire body a nearly uniform dark brown. Wings 
hyaline, costa light brown; subcosta uniting with the anterior margin 
near the basal half. MHalteres yellowish basally, light fuscous api- 
cally. Legs a light yellowish brown, the distal tarsal segments 
somewhat darker; claws long, slender, strongly curved, simple, the 
pulvilli as long as the claws. Genitalia; basal clasp segment short, 
stout, the internal distal angle produced as a long, roundly tapering 
process; terminal clasp segment short, stout, greatly dilated near 
the basal third, broadly rounded. Dorsal plate long, stout, broadly 
rounded. Harpes short, broad, each with a pair of long retrorse 
spines ; style long, slender, subacute. Type Cecid. 1259. 
Monardia lignivora Felt 
Too7 Felt) EP. N. ¥. State Mus. Bul. 110, p. 100; separate; p. 4 
(Campylomyza) 
1908 ——————. N. Y. State Mus. Bul. 124, p. 314, 315 (Campylomyza) 
1909 —————— Ent. Soc. Ont. 39th Rep’t, p. 44 (Campylomyza) 
Many larvae and a number of adults of this interesting form were 
taken September 21, 1906 in the fungus-affected heartwood of an 
18 inch hard pine, Pinus rigida, at Davidson’s River, N. C. 
The tree had been cut into the 20th of the preceding July for the 
purpose of observing the progress of a fungus affection. This un- 
doubtedly gave the gnats an opportunity to enter and at the time of 
their discovery they had worked their way among the spongy tissues. 
The flies had probably oviposited in crevices and galleries a con- 
siderable distance from the cut surface. Larvae, pupae and adults 
were found in the affected wood at least three inches above the cut 
and fully two inches behind the deepest part. The affected wood, 
either as the result of fungous attack or because of the operations of 
the Cecid larvae, was quite spongy and contained numerous lenticular 
cavities. It was well charged with pitch. The Dipterous larvae ap- 
peared to erode the smooth surface of the wood, even that apparently 
hard and sound and, as a result, produced quantities of very fine, 
yellowish wood powder. Full-grown larvae to the number of fifteen 
to twenty were taken in a smooth channel about 6 mm in diameter 
and 5 cm long. Other larvae occurred singly and the same was true 
of pupae. Exuviae or pupal skins were so numerous on portions of 
the cut surface as to literally cover it, especially the more spongy 
portions. _ 
Larva. Length 6 mm, slender, light salmon. Head small; an- 
tennae stout, apparently uniarticulate; breastbone stout, well de- 
veloped, tridentate, the median tooth largest, the shaft slender, 
slightly expanded distally. Skin nearly smooth; the segments pos- 
teriorly with transverse rows of minute spines as in Miastor larvae. 
Terminal segment broadly rounded. (Plate 13, figure 4.) 
