852 NEW YORK STATE MUSEUM 
Leaf-cutter bees, Megachile 
The popular name comes from the peculiar habit certain: 
Species, at least, have of cutting bits out of leaves to use im 
nest building. 
i118 Megachile monvivwa ga Cress. 
LS MS Vati manus Say 
120 Andrena crataegi Rob. 
(Zi AS Tim bra tay Snail 
122 Agapostemon radiatus Say 
i735 -Halievus paral Vet ws Say 
124 Wasp, Polistes pallipes St Farg. 
125 Vespa arenaria Eabr. 
126 Yellow jacket, Vespa diabolica Sauss. 
127 White-faced hornet, Vespa maculata Linn. 
Flower flies; syrphus flues, Syrphidae 
128 Spilomyia fusca, Loew 
129 Helophilus latifrons Loew 
130 H. similis Macq. | 
131 Eristalis flavipes Walk. 
132 E. tenax Linn. 
132a Tropidopria conica Fabr., a parasite of the 
above. | 
133 Hristalis transversus Wied. 
1384 Volucella evecta Walk. 
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. 
185 Pteromalus vanessae How. 
136 Pimpla’ conmq@quisit.or Say 
1387 Ophion purgatum Say 
188 I¢chneumon flavicornis Cr. 
139 Red-tailed tachina fly, Winthemia 4-pustulata 
Fabr. 
l : . 
