INSECTS INJURIOUS TO THE PINE. 2EF 
and the dorsal margin is sparsely flecked with brown. The fascie also 
are more or less margined with brown scales, and the third one is some- 
times interrupted in the middle; and the fuscous scales which margin 
the first and second fasci (especially along the second, near the fold) 
form minute tufts of raised scales. Cilia grayish, with interspersed 
black scales, which are tipped with white. Under side of the fore wings 
brownish. Hind wings pale grayish with white cilia; abdomen brown 
above, whitish toward the apex beneath. Expanse of wings 3 inch. 
(Chambers, in Comstock’s Report.) 
“‘ Hgg.—Seen from above, appears globular, with a diameter of 14™™; 
seen from the side, appears so compressed that its long diameter is 
n®arly twice the length of the short. Color reddish brown. Surface 
marked with delicate, close, meridional carine, meeting at the center 
above and below. (Comstock). 
“ Larva.—Length when full-grown, 4.2%"; average width, .58™™.  Sub- 
cylindrical; ali segments except head and anal segment nearly equal 
in diameter, the exceptions smaller. Color yellowish brown; head, 
prothoracie and anal plates dark brown; mouth-parts yellowish; pro- 
thoracic shield strong, completely divided longitudinally in the middle 
by a moderately wide suture. (Comstock.) 
“¢ Pupa.—Length, 4.4™™; average width, .71™™. Head obtusely rounded; 
wing-sheaths extending to sixth abdominal segment; antennal sheaths 
reaching nearly to end of wing-sheaths, all compactly soldered. General 
form very nearly cylindrical; sixth and seventh abdominal segments 
spreading at posterior borders; dorsal side of anal segment furnisued 
with acluster of from 10 to 15 delicate tentacular or hook-formed filaments. 
Color: when first transformed, light yellow brown, soon changing to very 
dark brown, almost black, on head, thorax, wings, and crural sheaths; 
abdomen of a lighter brown, growing still lighter towards the anus. 
‘s Parasites.—A minute chalcid parasite was bred from the specimens 
found in P. rigida. From 8 to 12 of the larve of this parasite are 
usually found within the body of one of the leaf-mining larve. They 
are pale milk-white in color, and the alimentary canal blackish; they 
are long and slender inform. A very small Tachina fly was also bred, 
both from the northern and southern specimens.” (Comstock in Agri- 
cultural Report for 1879.) 
We have found at Brunswick, Me., young pitch-pine trees the leaves 
of which had been attacked by this larva; the injury was quite local, 
not general. 
83. THE PITCH-INHABITING MIDGE. 
Diplosis resinicola Osten-Sacken. 
Order DiprERA ; family CECIDOMYIAD. 
Feeding early in May, and again towards the middle of June, in companies of thirty 
or forty, in the pitch exuding from wounds in the bark of the pitch-pine, small slen- 
der, footless, orange lary, changing to two-winged midges or gall-flies late in May 
and the middle of June. (Comstock. ) 
