﻿OF THE STATE ENTOMOLOGIST. 



81 



as also the legs and antennae, being pubescent with pale and dusky- 

 hairs — the color being rabbit-gray, or speckled black and white, the 

 abdomen having a medio-dorsal black stripe. The dusky stripes on 

 the front wings of the male, except at costa, and the black stripe on the 

 abdomen, except at each end, are usually more or less obsolete, and 

 [*is- 1^ ] indeed the ornamentation of the 



wings is extremely variable. In 

 many specimens the middle portion 

 of the front wings, within the three 

 dusky lines, is quite pale and mottled 

 .simuncCamver-^orm .—a, male moth ; b, fe- with grayish-groen, while the basal 



male do.— natural size ; c, joints of her antennie ; d, 



joint of her abdomen, showing spines ; e, her ovi- and terminal portious are marked 



jiositor — enlarged. 



with brown, thus making the contrast greater. Others again are abso- 

 lutely without marks whatever, even when fresh from the crysalis ; 

 while captured specimens always have the marks more or less eflfaced 

 on account of the looseness of the scales. The moths rise from the 

 ground for the most part early in Spring, and only rarely the previous 

 Fall. They are crepuscular in habit, and are most active soon after 

 dark in the evening. The female by means of a horny and extensile 

 ovipositor thrusts her eggs, to the number of from 50 to 150, under the 

 loose scales of bark or in any crevice or sheltered place, and is very 

 fond of availing herself for this purpose, of the empty cases of the 

 Rascal Leaf-crumpler* (Rep. 4, Fig. 18.) The eggs are but slightly 

 glued together, and have the form of a rather elongate hen's egg, the 

 shell being very delicate and smooth, though often appearing rough- 

 ened by transverse and longitudinal, irregular depressions. The larva 

 has but four prolegs, is variable in color, and one of its distinguishing 

 characters is the mottled head (Fig. 15.), and two pale narrow lines 

 along the middle of the back, the space between them usually dark 

 and occupied on the anterior edge and middle of joints 5, 6, 7 and 11 

 [Fig. K, ] by black marks somewhat inform of X ; these marks 

 being represented by dots on the other joints. There are 

 two rather prominent tubercles on top of the eleventh 

 n^ joint, preceded by two white spots. The chrysalis, so 

 far as my comparisons have enabled me to judge, does 

 Eniargedheadof not difier materially from that of the other species, so 

 worm. tvontYfew. that the two specics could hardly be distinguished in this 



•Senator Elmer Baldwin, an Illinois orchardist of large experience, as quoted by Dr. LeBaron (2d 

 111. Ee]). p. lOG), found these cases so generally used for this puipose that he considered the gathering 

 and burning of the cases one of the best means of destroying the Canker-worms. lean testify, from 

 my own expfrieuce, to the frequency with which the cases are used as a nidi. 

 E K — 6 



