Plate XL VI 

 Prairie Species 



Fig. 1. ( 'abbagv-wonn ButtiTlly, Po)itia r(ip<r, feniale. (Riley, Rep. 

 State Ent. Mo.) 



Fig. 2. Metallic Milkweed Fly, Psilopus siplio, male. Enlarged. (Wash- 

 burn, Rep. State Ent. Minn.) 



Fig. 3. ]\Iilkweed Butterfly larva, Aiiosia plexippus. (Riley, Rep. State 

 Ent. Mo.) 



Fig. 4. Caterpillar Gall, (inorimusckcDui gallasoliduginis. (Cook, Rep. 

 Ind. Dept. Geol. and Nat. Res.) 



Fig. 5. Goldenrod Bunch Gall, formed by the midge Cecidomyia soli- 

 daginis. (Beutcnmiillcr, Amer. Mus. Journ.) 



Fig. 6. Vertebrated Robber-fly, Promaclius vertchratus, male. (Wash- 

 burn. Rep. State Ent. Minn.) 



