PUPAE OF SOME MAINE SPECIES OF NOTODONTOIDEA 57 



one-fourth of the distance between the margin of the antenna and 

 the meson ; mesothorax shorter than usual, the metathorax 

 about one-fourth of its mesal length ; abdominal segments 1 to 

 8, sometimes 1 to 9, punctate, the remaining segments smooth; 

 abdominal spiracles almost circular in outline, the openings 

 elliptical, the lips somewhat elevated ; spiracular furrows present 

 on the fifth segment, each with a strongly chitinized edge, the sur- 

 face punctate, the area surrounding the spiracle having few 

 punctures ; dorsal furrow present between the ninth and tenth 

 abdominal segments, the edges not strongly toothed; cremaster 

 broad at,base, and rugose, narrowing rapidly to a smooth spine- 

 like distal half which is bifurcate at tip. 



ERANNIS TILIARIA Harris. 

 The Lime Span-worm. Fig. 3, A and B. 



Color usually bright reddish or yellowish brown, the head, 

 thorax, and appendages often darker than the remaining sur- 

 face ; face parts with fine indeterminate striations, almost smooth, 

 a few wrinkles or impressed lines between the proximal ends 

 of the antennae ; thorax with shallow impressed lines ; abdom- 

 inal segments 1 to 8 coarsely, thickly punctate; eighth segment 

 somewhat swollen in the region of the spiracles and narrowing 

 rapidly to the caudal margin ; caudal margin of the furrow be- 

 tween the ninth and tenth segments finely serrate and somewhat 

 crenulate in outline ; cremaster with a transverse furrow at base, 

 the proximal half rugose with a slight lateral projection on 

 each side at the base of the narrow, smooth distal portion, which 

 is bifurcate at tip, each half slender and somewhat seta-like, 

 very easily broken. 



Average length 12 to 15 mm.; greatest width 4 to 5 mm. 



The larvae of the lime span-worm were collected this season 

 from apple, cherry, Carolina poplar and the linden or lime tree, 

 although most of them came from apple. The caterpillars 

 are about an inch and a half long, and the markings vary con- 

 siderably. They are generally dull dark red on the back, with 

 a broad yellow stripe through the spiracles, and whitish under- 

 neath. They were most abundant the last two weeks of June 

 and pupated the last of June and the first week in July. They 

 burrow into the soil near the base of the tree to pupate and 



