LEGUMINOUS CROPS. 25 



as those wiiich infest clover, consequently they do not 

 require special description. 



(4) The Parasites of the Pea {Pisum sativum). 



The Pea Moth {Grapholitha pisana, Pig. 7). 

 During the montli of June this small moth will be seen 

 hovering a,hout the flowers of field and garden peas. Ac- 

 cording to Dr. Taschenberg {Praktische Insekten-Kunde), 

 the female moth lays three eggs on each young pea-pod. 

 In about a fortnight the eggs are hatched, and the larvae 

 or caterpillars, which are provided with mouths well 

 adapted for chewing hard substances, gnaw their way into 



A 

 Fig. I.—Vea. Moth (Grapholitha pisana). 



A. Pea Moth (slig-litly enlarged). 



B. Caterpillar eating pea (nat, size). 



the pod, and then begin to regale themselves upon the 

 " fleshy " cotyledons of the seeds (Pig. 7 B). 



The caterpillars of this moth.are of a yellow colour, with 

 black heads. Their bodies are divided into segments, and 

 each segment has a certain number of brown dots and a 

 few hairs. The caterpillars finally retire to the earth, 

 where they change their skins, and ultimately spin 

 cocoons. Within these cocoons they hibernate until the 

 following spring. During the spring they pass into pupae, 

 and appear finally as moths (Pig. 7 A) about the month 

 of June. 



The larva of the pea moth causes what is known as 

 " maggoty " or " worm-eaten " peas. 



