INSECTS INJURIOUS TO THE PINE. 195 
larve and pupe, which in their work resemble Retinia frustrana, bit 
differ from that insect in coloration and in being slightly larger. . These 
developed into a moth intermediate in characters between R. frustrana 
and hk. Comstockiana, and which has been described by Prof. C. H. 
Fernald as follows: 
The moth.—Head sordid white, with a yellowish tinge; front and palpi inclining 
more to ashy; antenne brown, annulated with white; thorax above very light gray, 
washed with dull ocherous, deepening to a coppery tint on the front of the patagie. 
Thorax beneath, abdomen and hind wings above and beneath, and fore wings be- 
neath light gray, with a silky luster; fringes of the hind wings lighter, with a line 
near the base concolorous with the wings. 
Fore wings above sordid white, with a basal patch occupying the basal fourth of 
the wing, composed of about four irregular cross-streaks of dark red, alternating 
with similar streaks of silvery gray, the outer red streak sending out a tooth on the 
fold. The light space following the basal patch has several small gray costal spots. 
from which light ocherous streaks extend across the wimg. A dark-red band extends 
across the wing beyond the middle, divided on the costa by a geminate white spot, 
Below the cell the basal half of the red band is replaced by stripes of light ocher- 
yellow and silver-white; the rermaining portion of the red band below the cell is 
curved outwardly, making this part convex on the outside and concave on the side 
towards the base. 
The apical portion of the wing is dark red, changing to bright ocher-yellow in- 
wardly, and towards the anal angle divided by a subterminal geminate broken line 
of silvery scales, extending from the costa to the anal angele. 
Fringe reddish-purple. The costa from the basal patch to the terminal band is 
marked with geminate white spots, alternating with gray. 
Posterior femora and tibie very light silky gray; fore and middle femora and tibize 
gray, with coppery reflections, the tibize banded with white. All the tarsi gray, with 
whitish tips. ; 
Expanse.—Female, 18 ™, Habitat.—Ithaca, N. Y. Described from two females, 
one in the collection of the Department of Agriculture, the other in my-collection.” 
AFFECTING DHE LEAVES. 
66. ABBOT’S WHITE PINE SAW-FLY. 
Lophyrus abbotii Leach. 
Order HYMENOPTERA; family TENTHREDINID ©. 
From mid-summer until October, and sometimes as late as November, clustering cn 
the twigs and smaller branches of the white pine, soft, smooth-bodied, yellowish-whi-e 
worms about an inch long, with three, and posteriorly four, longitudinal rows of 
large black dorsal spots; late in the autumn transforming in tough brown pod-like 
cocoons attached to the twigs, within which they hybernate, changing to pup (in 
Illinois) about the middle of May, the 4-winged fly with broad pectinated antennze 
appearing about the first of June. (Riley.) 
By far the most destructive insects to the foliage of the pine and fir 
are the different species of false-caterpillar or larvie of the pine saw-fly or 
Lophyrus. When present at all these larve exist in colonies, keeping 
together until#they are ready to undergo the ehrysalis state; and after 
stripping the leaves of one twig or small branch pass on to adjoining 
twigs until a large branch or nearly one side of a tree will be denuded 
A 
