PINE CATERPILLARS. 779 



105. Caripeta angustiorata Walker. 



The caterpillar of this Geometrid moth is common ou the white pine 

 in August and September in Maine and Ehode 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 one, 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 

 «dge, 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'"™.* 



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, IS""™. 



The moth. — This fine moth differs remarkably from any other of our Geometrids in 

 the opake, rich velvety ocherous forewings, 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 Pinna strobi, and not in pairs connected by ele- 

 vated ridges. On the second segment from the end are two high dorsal acute tubercles 

 close together, and behind them a transverse row of eight small acute warts. Supra- 

 anal plate obtuse, ending in two small acute tubercles. An acute spine-like wart on 

 each 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«>'". Brunswick, Me. 



