56 



INJURIOUS INSECTS 



or asli-gray chryalids. They pass the winter in the chrys- 

 alis state^ and the next summer appear as handsome 

 " swallow-tailed" bnttei'flies. The butterfly has a spread 

 of wing of three-and-one-half to four inches. The wings 

 are black, with a row of yellow spots across them, and 

 another row near the margin; the hind wings have each 

 a tail-like appendage, seven blue spots between the two 

 rows of yellow ones, and at the inner angle, an orange- 

 colored spot with a black center. The female lays her 

 eggs singly. 



Eemedies. — The caterpillar is most destructive upon 

 Parsley and the related plants when grown for seed. 

 They devour not only the foliage, but seem to be espec- 

 ially fond of the flower-clusters, and of the young fruit 

 or seeds. As with all other large and scattered cater- 

 pillars, hand-picking is the most effective remedy. The 

 butterfly is so handsome that it would not be supposed to 

 be capable of mischief, but seed growers should encourage 

 entomologists to make specimens of all they find. 



THE PEA. 

 THE PEA-WEEVIL, 

 (Bruchus pisi, Linn.) 



Our common garden Pea has not many insect enemies, 

 for with the exception of the Striped Flea-beetle {Haltica 

 striolata), which gnaws numerous small holes in the 

 leaves, and the Corn-worm, alias Boll-worm {Heliothis 

 armigera), which eats into the pod, there are very few 

 others besides the Pea-weevil under consideration. This 

 species alone is so numerous, however, as to be a serious 

 drawback to pea culture in some parts of the country. 



The Pea- weevil, which is here illustrated (fig. 36 j. 



