198 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION, 



Larva. — Head large, broad, and flat ; as broad as the prothoracic segment ; pale 

 horn or whitish color, surface rough ; in front crossed by two dark reddish-brown 

 broad lines which form two large shallow scallops ; the front line extends along the 

 sides, including the eyes and the front edge of the clypeus ; the other is broader, 

 forming two scallops and crossing tlie apex of the clypeus. On each side of the head 

 below the front line is a short, nearly straight brown-black line not reaching as far 

 as the eyes. The median suture of the head is rather deeply impressed ; the vertex 

 on each side is a little swollen and marked with eight or nine dark reddish-brown 

 more or less confluent spots. The posterior edge of the head is edged with black 

 brown. The body is somewhat flattened, pale pea green, a little paler than the 

 under side of the leaf. Prothoracic segment without a shield, but broad, flat, and 

 green like the rest of the body. On the sides of the three thoracic segments is a 

 dark tubercle tinged with reddish between, forming a lateral thoracic line. No dor- 

 sal tubercle, but pale hairs as long as the body arise from minute points, which are 

 obscurely indicated. Length, 23™">. 



Pupa. — Body very thick and stout; the head broad, and the ablomen short and 

 thick, the end of the body very blunt, the tip broad and obtuse, somewhat tubercu- 

 lated, not spined. The wings reach to the end of the fifth abdominal segment ; and 

 on the under side of the sixth and seventh segments are two dark ventral small cal- 

 losities ; the tip is broad, truncated, rough and dark. Length, 10""" ; thickness, 



Moth. — A very large species for the family to whicl it belongs. Head with the 

 scales between the antenna} and on the vertex loose and thick, not smooth as in 

 Gelechia. Palpi long and slender, smooth, the third joint very long and slender, over 

 one-half as long as the second. It is so large and the fore wings so broad and oblong, 

 that at first it might be mistaken for a Tortrix. Body and wings snow white. Fore 

 wings snow white, with two smoky trim dots at the base of the wing near the costa; 

 two smoky spots inside of the middle of the wing on the internal edge. Beyond the 

 middle of the wing are five or six indistinct, pearly, smoky spots, the central one 

 apparently forming the discal dot. Two faint, curved, smoky lines parallel with 

 each other and to the outer edge, neither of them reaching the costal edge of the 

 wing, and the inner less than one-half as wide as the outer. On the outer edge of 

 the wing, on the white fringe, is a row of about five conspicuous dark-brown spots ; 

 the base of the fringe is smoky, forming a faint line. Body, hind wings, abdomen, 

 and legs snow-white ; antennae light brown. On hinder part of the thorax very dis- 

 tinct when the wings are closed, is a large prominent tuft of broad brown scales, 

 which send off'diff'erent metallic colors, especially steel-blue. Length of body, 9 to 

 10'"™ ; of fore wing, llmm . expanse of wings, 24"^™. 



277. THE BROWN CRYPTOLECHIA. 



Cryptolechia quercicella Clemens. 



The leaves of the oak and, as we have found the past season, the 

 aspen, are often bound together by a rather large flattened Tiueid cat- 

 erpillar, larger in size than most larvje of the family to which it belongs. 

 It is of about the size of the caterpillar of C. schlagenella. 



The larva of the present species (originally described by Clemens as 

 Psilocorsis quercicella) was said by that author* to bind the leaves of 

 oaks together in August and September (in Pennsylvania) and to pick 

 out the parenchyma between the network of veins; to weave a slight 

 cocoon between two leaves, appearing as a moth in March and April. 



*Proc. Acad. Nat. Sciences, Phil., June, 1860. See also Clemens's Tineina of North 

 America, edited by H. T. Stainton, p. 149. 



