ip6 INSECTS OF FXONOMIC IMPORTANCE 



Bean weevit. -" {AcanfJioscclidcs ohtccfns) 

 Order — Coleoptera 



Adult 1)eetle is about j/8 inch in length, with mot- 

 tled wing covers; eggs inserted in the bean pod 

 through holes made by female; life cycle from 21 to 

 80 days; probably 5 or 6 generations annually; it 

 also breeds in stored beans. 



Control — No method of preventing injury in 

 field ; fumigate stored beans and plant clean seed. 



The bean leaf-beetle-^ {Cerotoma frifurcafa) 

 Order — Coleoptera 



A small reddish black-marked beetle about 1-5 

 inch long; adults hibernate and lay eggs in cracks 

 of soil in spring near stem of plant ; larvse feed on 

 roots and stems but adults eat holes in leaves; life 

 cycle from 4 to 9 weeks; in South 2 or 3 genera- 

 tions, one in the North. 



Control — Spray with arsenate of lead, 5 pounds 

 to 100 gallons of water. 



The pea aphid ^^ (MacrosipJmm pisi) 

 Order — Hemiptera 



Exceedingly injurious to peas some years in New 

 York; life cycle similar to other aphids; passes win- 

 ter in northern range on clover and vetches ; flies to 

 peas in spring when these are available; several 

 generations during season ; goes back to clover in 

 late season and lays eggs that pass winter ; in south 

 it passes winter as winged and wingless females. 



Control — Do not plant peas near clover ; no sat- 

 isfactory remedy on peas sown broadcast; plant 

 peas in rows and brush lice off and bury in soil by 

 cultivation. 



27 Chittenden— U. S. Yearbook, 1898. 



28 Chittenden— U. S. Bu. Ent., Bull. 23. 



29 Davis— U. S. Bu. Ent., Bull. 276. 



