[last-instar larvae:]
...abdomen without dorsal tubercles...
...spatula absent...
...Hind spiracles longer mesally than laterally ... C. resinicola

...I have seen specimens of C. resinicola from P. banksiana (Mass., Mich., N.W.T., Ontario), P. contorta (Brit. Col., Oreg.), P. echinata (La.), P. elliottii (Fla.), P. glabra (Fla.), P. palustris (Ala.), P. ponderosa (Calif., Colo., Idaho, N. Mex.), P. radiata (Calif.), P. rigida (Md., Mass .. N.J., N.Y., N.C., Ohio, Ontario, Pa.), P. serotina (N.C.), P. taeda (Ga., Md., Miss., Va.), and P. virginiana (Md., Va.).

C. resinicola may occur singly in small droplets of pitch (fig. 5) or gregariously in larger pitch masses (fig. 3) as well as pitch-filled nodules.

...Interestingly, he found them responsible for "birdseye pine," a desirable condition in wood used for finishing purposes. This is due to the healing over and consequent distortion of the annual rings around the old feeding pits of Cecidomyia sp.

Larva without tubercles on dorsum of abdomen...
Larvae are usually gregarious on red pines and pupate in the mass of resin in which they live... Identification of these depends on microscopic characters of larvae, pupae, and males...
C. fortunactus...
C. reburrata...
C. resinicola (Osten Sacken). This species is the most widespread and probably the commonest North American species of this genus. It is known to injure the cambial layer and kill shoots. Hosts: known from almost all species of hard pine in North America... probably wherever pines grow.
C. resinicoloides...
C. tortilis...