THE CLASSIFICATION OF THE PUPiE OF THE 

 SATURNIIDiE.* 



Edna Mosukk. 



A short discussion of the characters of the pupae of the 

 superfamily Saturnioidea was given in a preceding paper, 

 Annals Entomological Society of America, Vol. VII, pp. 277-8, 

 including a key for the separation of the three families. Two 

 of the families, the Ceratocampidae and Hemileucidas were 

 ■discussed in that paper, and the third, the Saturniidas, will be 

 considered here. Plate V, included in this paper shows 

 some of the more important structures of the Ceratocampidae 

 and Hemileucidae. 



The general characters of the family Saturniidae are as 

 follows: Body with abdominal segments 5 to 7 capable of 

 being telescoped, antennae broadly pectinate throughout, or 

 nearly so, the stem of the flagellum distinct and raised above 

 the level of the pectinations, varying greatly in the sexes, 

 always broader and usually longer in the male; maxilla, meas- 

 ured on the meson, t never more than one-third the length of 

 the wings; the exposed portion of the tibiae and tarsi of the 

 first pair of legs, and the tips of the second pair of legs with their 

 lateral margins adjacent on the meson, never with the distal 

 ends of the tarsi of the first and second pairs of legs meeting 

 obliquely on the meson; first pair of wings with the anal angles 

 broadly rounded, and always reaching the caudal margin of the 

 fourth abdominal segment on the ventral surface; second pair 

 of wings produced around the anal angles of the first pair of 

 wings and usually forming prominent angles on the fourth 

 abdominal segment, always extending at least a short distance 

 along the ventral margin of the first pair of wings; metathorax 

 without distinct oblong tubercles one-third or more the width 

 of the segment ; suture between the seventh and eighth abdom- 

 inal segments never deep with distinct crenulations on its 

 margins; distinct cremaster never present; pupse always found 

 in cocoons. 



Of the family Saturniidae, the pupae of eight genera have 

 been described in the following pages. They may be separated 

 by the following key : 



*Contribution from the Entomological Laboratories of the University of 

 Illinois, No. 46. 



fThe maxillae are measured from the distal margin of the labrum to their 

 distal end (Fig. 14, a, b). The wings are measured from the same point to their 

 caudal margin (Fig. 14, a, c). 



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