78 Maine Agricultural Experiment Station. 1917. 



lar, then a narrow, cylindrical portion which expands into a 

 wider, knob-like end with a row of inconspicuous projections on 

 the dorsal surface. 



A pupa of this species was collected from white birch, Aug- 

 ust 3. The cremaster was entangled in a web of silk on the 

 underside of a leaf, but there was no cocoon present. The adult 

 emerged August 15. 



The larvae of these are dark red above and have a pair 

 of prominent tubercles on the first abdominal segment. 



LIST OF ABBREVIATIONS. 



a. 



antennae 



al-alO. 



abdominal segments 1-10. 



ao. 



anal opening. 



at. 



invaginations for the anterior arms of the tentorium. 



cl. 



clypeus. 



cm. 



cephalic margin of an abdominal segment. 



cr. 



cremaster. 



es. 



epicranial suture. 



f. 



front. 



f 1. 



femur of the prothoracic leg. 



ge. 



glazed eye-piece. 



go. 



genital opening. 



lb. 



labrum. 



li 



prothoracic leg. 



22 



mesothoracic leg. 



33 



metathoracic leg. 



Ip. 



labial palpi. 



ms. 



mesothorax. 



msp. 



mesothoracic spiracle. ^ 



mt. 



metathorax. 



mx. 



maxillae. 



P- 



prothorax. 



s. 



spiracle. 



se. 



sculptured eye-piece. 



sf. 



spiracular furrow. 



ts. 



tubercle scar. 



V. 



vertex. 



w 1. 



mesothoracic wing. 



w 2. 



metathoracic wing. 



Fig. 2, A to I. 



A Hypothetical pupa, ventral view. 

 B Hypothetical pupa, dorsal view. 

 C Cosymbia lunienaria, ventral view, female. 



