PUPAE OF SOME MAINE SPECIES OF NOTODONTOIDEA 31 



Antennae. These are easily located (Fig. 2, A, a) being 

 attached to the front and curving laterad along the margin of 

 the head, extending on to the ventral surface of the thorax and 

 abdomen along the edge of the mesothoracic wing. 



Labial Palpi. Only a very small portion of the labial palpi 

 is visible just caudad of the labrum (Fig. 2, A, Ip). 



Maxillae. The maxillae (Fig. 2, A, mx) lie adjacent on the 

 meson and vary greatly in length. They are measured on the 

 meson from the caudal margin of the labrum to their distal end, 

 (Fig. 2, A, a). This length is compared with the distance on 

 the meson from the caudal margin of the labrum to the caudal 

 margin of the wings (Fig. 2, A, ac). 



The parts of the head, exclusive of the appendages, are 

 referred to as the face-parts. 



THE THORAX. 



Prothorax. This segment (Fig. 2, B, p) is normally about 

 one-third the length of the mesothorax. 



Prothoracic Legs. These lie adjacent to the maxillae (Fig. 

 2, A, 11). The legs are folded so that normally only the sur- 

 face of the tibia and tarsus are exposed. In generalized forms, 

 however, a portion of the femur is visible (Fig. 2, A, fl). These 

 legs are about half the length of the wings in the great ma- 

 jority of pupae. 



Mesothorax. The mesothorax (Fig. 2, B, ms) is the long- 

 est segment of the body, and is normally from two to three 

 times the average length of the abdominal segments. 



Mesothoracic Spiracle. The opening to this spiracle re- 

 ferred to in the text as the mesothoracic spiracle (Fig. 2, B, 

 msp), is found at the cephalo-lateral angle of the mesothorax, 

 between that segment and the prothorax. The real spiracle is 

 down below the surface in the conjunctiva between the two seg- 

 ments. 



Mesothoracic Legs. These are folded just like the pro- 

 thoracic legs and lie adjacent to them, but their femora are nev- 

 er exposed (Fig. 2, A, 12). The part referred to as mesothor- 

 acic leg is in reality the outer surface of the tibia and tarsus. 

 These legs are from three-fifths to three-fourths the length of 

 the wings in the majority of pupae. 



