S52 NEW YORK STATE MUSEUM 



Lraf-ciiftcr &r(.s\ M e »' a c li i 1 e 

 The popular name comes from the jieciiliar habit certain: 

 species, at least, have of cutting- bits out of leaves to use in 

 nest building. 



118 M e g a c h i 1 e m o n t i v a g a Cress. 



119 ^[. 1 a t i m a n u s Saj 



120 A n d r e n a c r a t a e g i Rob. 



121 A. fimbriata Smith 



122 A g a p o s t e m n r a d i a t u s Sa v 



123 Halictus parallel us Say 



121 Wasp, P o 1 i s t e s ]» a 1 1 i p e s St Farg. 



125 V e s p a a r e n a r i a Fabr. 



126 Yellow jacket, Vespa diabolica Sauss. 



127 V71iite-f aced hornet, Vespa maculata Linn. 



Flower fk's; si/rphus flics, Sj'rphidae 



128 S p i 1 o m T i a f u s c a Loew 



129 Helophilus latifrons Loew 



130 H. s i m i 1 i s Macq. 



131 Eristalis flavipes Walk. 



132 E. t e n a X Linn. 



132a T r o p i d o p r i a c o n i c a Fabr., a parasite of the 

 above. 



133 Eristalis t r a n s v c r s u s Wied. 

 131 V o 1 u c e 1 1 a e v e c t a ^Yalk. 



Parasites 

 A number of serious insect pests are held in check by para- 

 sitic enemies. These beneficial species should be protected^ 

 and in fighting insects the destruction of parasites should be 

 avoided whenever possible. 



135 Pteromalus vanessae How. 



136 P i m p 1 a c o n q u i s i t o r Say 



137 Ophion purgatum Say 



138 Ichneumon f 1 a v i c o r n i s Cr. 



139 Red-tailed tachina fly, Winthemia 4-pustulata 



Fabr. 



