PUPAE OF SOME MAINE SPECIES OF NOTODONTOIDEA 51 



Average length 12.5 mm. ; greatest width 4 mm. 



It could not be determined from the specimens whether 

 or not there are hooked setae on the cremaster as they stayed in 

 the soil until the moths emerged, and if present were broken off. 

 The larvae of this species were collected from common yellow 

 dock the latter part of June and pupated before a description 

 was obtained. The moths emerged during September in the 

 laboratory. 



Genus DIASTICTIS Hiibner. 



Body of usual shape, widest in the region of the third and 

 fourth abdominal segments ; head, thorax and appendages com- 

 paratively smooth, the abdomen rather coarsely punctate ; fronto- 

 clypeal suture indicated at the base of the antennae; labrum 

 rounded on the caudal margin ; a small portion of labial palpi 

 exposed caudad of the labrum; maxillae never quite reaching 

 the caudal margin of the wings, the proximo-lateral angles not 

 extending to the eye-pieces ; antennae broader than the prothor- 

 acic legs, narrowed slightly at the distal end and sometimes 

 touching on the meson ; prothoracic legs three-fourths the length 

 of the wings, their femora exposed; mesothoracic legs as long 

 as the maxillae; tips of the metathoracic legs usually exposed 

 caudad of the maxillae ; mesal length of prothorax two-fifths 

 that of the mesothorax; mesothoracic spiracle with a prominent 

 ridge adjacent to its caudal margin, the edge curved slightly 

 caudad and covered with white setae ; metathorax one-half the 

 length of the prothorax; abdominal segments 1 to 8 thickly 

 punctate, the ninth and tentli sparsely punctate or smooth; ab- 

 dominal spiracles elliptical ; fifth abdominal segment with five or 

 six shallow furrows over each spiracle, the margin of the seg- 

 ment cephalad of the spiracle with coarser punctures than the 

 remainder of the segment; dorsal furrow never present between 

 the ninth and tenth abdominal segments ; cremaster rugose at 

 base, bifurcate at the distal end. 



Only two species of this genus were collected in Maine, but 



other species are known to occur in the State. These two species 



are very closely related and may be separated as follows : 



a. Elevation along caudal margin of mesothoracic spiracle 



strongly elevated and visible in ventral view; spiracular 



