42 



MISC. PUB. 601, U. S. DEPT. OF AGRICULTURE 



HYMENOPTERA 



Hymenoptera (bees, wasps, ants, and their allies) are winged or 

 wingless insects, the winged members with two pairs of membranous 

 wings with few veins. The mouth parts are formed for chewing or for 

 both chewing and sucking. The immature stages are maggotlike or 

 caterpillarlike and entirely different from the adults. The habits of 

 these insects are varied; some are predaceous, some are parasitic, 

 some cause plant galls, some feed on plant foliage, and some, such as 

 bumblebees and honeybees, live on plant pollen and nectar. This order 

 includes some of our most harmful and some of our most beneficial 

 insects. (See figs. 40, 41, and 42.) 



Figure 41. 



-Hymenoptera. Polistes fuscatus var. pallipes Lep., a wasp that makes 

 a paper nest. Actual length about 20 mm. 



Figure 42. — Hymenoptera. Camponotus castaneus (Latr. ) , a common ant. Actual 



length about mm. 



# u. 



S. GOVERNMENT PRINTING OFFICE: 1946 - 



-685995 



