CELERY INSECTS 107 



OTHER INSECTS INJURIOUS TO PEAS 



Cow-pea weevil (Pachyments chincnsis). 

 Four-spotted bean-weevil (PacJiymerus quadri- 

 maculafns) . 



Bean ladybird (Epilachna corrupta). 

 Blister beetles (several sps.). 

 Bean aphid {Aphis riimicis). 

 Seed-corn maggot (Plwrbia fusciceps). 

 Pea-moth (Semasia nigricana). 



CELERY PESTS 



The CELERY CATERPILLAR^'^ (PapiUo polyxciics) 

 Order — Lepidoptera 



This caterpillar is green or yellowish and ringed 

 with black and spotted with yellow; it becomes 2 

 inches long; when full-grown it changes to a chry- 

 salis and later the parent insect, a large swallow- 

 tail butterfly, appears. 



The celery looper"^ (Aufographa falcigcra) 

 Order — Lepidoptera 



Where it occurs this insect is considered very de- 

 structive to celery; the larva is a looper and meas- 

 ures nearly 2 inches in length ; the moth is purplish 

 to velvety brown and has a conspicuous silvery 

 comma-like mark on each wing. 



Control — Hand pick and poison with arsenate 

 of lead. 



The carrot rust-fly'^ (Psila roscc) 

 Order — Diptera 



This insect sometimes attacks celery and causes 

 the leaves to turn reddish and the roots to become 



30 Davis— Mich. Expt. Stat., Bull. 102. 



31 Chittenden— U. S. Bu. Ent., Bull. 2,2>- 



32 Chittenden— U. S. Bu. Ent, Bull. 33- 



