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 pojplar 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 tw^o 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 



