42 SYNOPTIC KEY 



45(43, 44) In some sort of cell or nest constructed by the adults 

 which are usually near at hand: food, supplied by the 

 adult, consisting of the bodies of other insects, pollen 

 or honey, sometimes fed as needed but more frequently 

 stored. The cell is constructed of wax or plant 

 material, in earth or decaying wood or on the stems of 

 plants. (Lutz, 406; Comstock, 599.) 



Order Hymenoptera, in part 



Class IN SECT A 



PUPAE 



Tentative key to the orders of pupae of the Chicago area. 

 Compiled by V. E. Shelford. 



1(12, 19) Without wings or wing rudiments. 2 



2(3) Head prolonged into an immovable beak (antennae 

 borne near the eyes). (Comstock, 184; Lutz, 56.) 



Order Mecoptera, in part 



3(2) Head not prolonged into a beak. 4 



4(7) Prothorax distinct, i.e., not standing out as a distinct 

 segment. 5 



5(6) Body compressed laterally; inclosed in a cocoon; 

 mouth parts formed for sucking; very minute. (Com- 

 stock, 490; Lutz, 279.) Order Siphonaptera 



6(5) Body not compressed laterally, not inclosed in a cocoon; 

 of considerable size; mouth parts formed for biting. 

 (Comstock, 494; Lutz, 280.) 



Order Coleoptera, in part 



7(4) Prothorax not distinct; posterior boundary sometimes 

 indicated by a very slight groove on the dorsal surface. 



8 



8(9) Mouth parts formed for biting; body sharply con- 

 stricted between the thorax and abdomen. (Lutz, 

 415; Comstock, 633.) Order Hymenoptera (ants) 



