Pupae of Some Maine Species of Notodontoidea 39 



Hptical, those of the second segment covered by the wings ; no 

 spiracular furrows present ; no dorsal furrow present between the 

 ninth and tenth abdominal segments but a very distinct con- 

 striction or furrow at the base of the cremaster ; cremaster tri- 

 angular, longer than broad, the distal end with six strong hooked 

 setae and two finer hooked setae just cephalad of these. 



COSYMBIA LUMENARIA Hiibner. 



Fig. 2, C. 



Color usually bright green with three interrupted, longi- 

 tudinal white stripes on the dorsum, one of these on the meson 

 and one on either side, a broader, less interrupted white stripe 

 through the spiracles, the body more or less mottled between 

 the stripes with either small black or white blotches ; lateral 

 ridge usually with a narrow white stripe on the dorsal side and 

 a broader black stripe on the ventral ; body often entirely white 

 with the black stripe near the lateral ridge ; head, thorax, and 

 appendages smooth, or with very fine transverse striations, an- 

 tennae at proximal end equal to greatest width of the prothor- 

 acic legs, but narrowing rapidly so that they are only one-third 

 as wide at the distal end ; abdomen smooth, the segments taper- 

 ing gradually to the caudal end of the body. 



Length 10 to 11 mm. ; greatest width 2.5 to 3 mm. 



The larvae were very abundant on sweet fern and were often 

 found feeding along the edge of the leaf. Some of the larvae 

 were about an inch long, pale green, with white dorsal stripes 

 much as described for the pupae; with fine powdery white dots be- 

 tween, others were brown with indistinct white stripes and dark- 

 er brown oblique lines or blotches, and seemed to be entirely dif- 

 ferent, while the pupae and the adults would be exactly alike, 

 or at least appeared to be. Larvae were abundant all through 

 July, and many pupae were collected the latter part of the month 

 and in August. The larvae spin a little knot of silk and fasten 

 themselves to it and then transform to pupae. They are sus- 

 pended like many butterflies with the hooks of the cremaster 

 fastened into the web of silk and a fine white silken thread 

 around the middle of the body. There is never any trace of a 

 cocoon. The moths emerged in August and many were seen 

 flying about, but the egg-laying habits were not observed. 



