PINE CATERPILLARS. 779 
105. Caripeta angustiorata Walker. 
The caterpillar of this Geometric! moth is common on the white pine 
in August and September in Maine and Rhode Island, where I have ob- 
served it, and is protected from observation by its resemblance to the 
smaller twigs of the pine. It is quite variable in its coloration. Au- 
gust 8 to 9, at Brunswick, Me., it spun a white web with minute meshes, 
the cocoon not being a loose oue, and on the 9th it assumed the pupa 
state. The moths issued in May in the breeding boxes. 
Larva. — It is rather large and thick-bodied, the body being somewhat thickened 
at the first pair of abdominal legs. The head is slightly angular above, as wide as 
the segment next to it, the latter being rather small and not angular in front, but 
provided with small warts. On the metathoracic and abdominal (except second and 
third from the end) segments is a prominent transverse saddle-shaped ridge, ending 
on each side in a dark warty tubercle. On the penultimate segment are two dark, 
rather high dorsal tubercles, situated near together. Behind these two tubercles, 
and situated on a transverse wrinkle, are two small dark warts, and on a succeeding 
wrinkle are six warts ; on the supra-anal plate are four warts, while on the edge, 
which is obtuse, are four small warts from which project four hairs. There are simi- 
lar hairs on the edge of the anal legs, which have a deep crease parallel to the front 
edge, and two large spines. Lateral ridge rather prominent, interrupted at the 
sutures between the segments. In color this larva is pale lilac, with whitish gray 
specks, being of a slate color or decidedly reddish, like a twig of the trees, and vari- 
ously marbled with dark brown, or sometimes with greenish livid white. The head 
is marbled with transverse parallel waved lines. Length, 30 to 32 mm .* 
Pupa.— The chrysalis is brown, sometimes green on the head and thorax, includ- 
ing the limbs and wings ; with an obscure dorsal row of irregular spots, forming a 
nearly continuous line or band ; and a lateral row of large obscure spots. On the 
second segment from the end of the legs are two warts. The spiracles are unusually 
-distinct. Length, 15 mm . 
The moth. — This fine moth differs remarkably from any other of our Geometrids in 
the opake, rich velvety ocherous fore wings, with the three broad silvery lines and 
large oblong discal dot. Antennae well pectinated. Forewings opake, deep ocherous 
and paler at base ; on the inner fourth is a white line forming a single, large, acute 
angle on the median vein, along which it is prolonged beyond the basal third of the 
wing, extending out nearly to the discal dot, which is silvery- white ; just beyond the 
latter is a broad silvery line, diffuse on the outside, which curves inward just below 
the median vein, and slightly inward opposite the discal dot. Halfway between this 
line and the outer edge of the wing is a row of irregular white spots, from which 
sometimes run whitish streaks to the fringe, which, between the white spots, is 
ocherous brown. Hind wings pale whitish ocherous. Expanse of wings, 1.60 inches. 
* Another larva was described in my notes as follows: 
Larva. — Body gradually increasing in width from head to anal legs. Head much 
flattened, not so wide as the prothoracic segment, the latter narrower than mesotho- 
racic segment. A large lateral tubercle on each side of mesothoracic segment, blunt 
and irregular in form. A rather prominent transverse ridge on the segment behind 
the middle. There are four scattered tubercles on the other segments, but they are 
much smaller than in the species on the Pinus strobi, and not in pairs connected by ele- 
vated ridges. On the second segment from the end are two high dorsal acute tubercles 
<jlose together, and behind them a transverse row of eight small acute wafts. Supra- 
anal plate obtuse, ending in two small acute tubercles. An acute spine-like wart on 
«ach anal leg. Anal legs of moderate size. Deep brown, with a dull reddish tinge ; 
body not mottled nor so variegated as in white pine genus. Color of a dark twig, 
but not so much mimicking a pitch-pine twig. Length, 40 mm . Brunswick, Me. 
