60 MANUAL OF VEGETABLE-GARDEN INSECTS 



such beans, the <i^erm is destroyed and many of the others are 

 so injured that they cannot })roduce healthy pkmts. 



References 



Riley, 3rd Rept. Ins. Mo., pp. 52-56. 1871. 



Lintner, 7th Rept. N. Y. State Ent., pp. 255-279. 1891. 



Fabre, Souvenirs Entomologiques, 8, pp. 48-05. 



Kan. Agr. Exp. Sta. Rept. 1889, pp. 206-210. 



Slingerland, Psyche, 6, pp. 445-447. 1893. 



Chittenden, U. S. Dept. Agr. Yearbook for 1898, pp. 239-242. 



The Broad Bean Weevil 



Bruchus rufimanus Boheman 



The broad bean weevil is similar to the pea weevil both in 

 the form and general appearance of the beetle and in its life 

 history. It is a troublesome pest in Europe, northern Africa, 

 Syria and Persia and has been recently introduced into 

 California. By preference it attacks the European broad 

 bean or horse bean but will also breed in 

 peas and certain species of vetch. In Cali- 

 fornia the weevils appear in the field by 

 the last of March. The beetle closely re- 

 sembles the pea weevil, both in form and 

 markings. The latter are, however, more 

 diffuse and the black spots at the tip of 

 the abdomen are indistinct or lacking alto- 

 gether (Fig. 44). The tooth on the under- 

 bean weevil (^x 9°^ ^^^^^ ^^ ^^^ ^"^^ femur is more obtuse than 

 in the pea weevil. The female deposits 

 her eggs on the outside of the bean pods, as many as 

 thirty-four having been found on a single pod. The eggs 

 are attached by a mass of sticky material. The egg is 

 elongate-ovate, white to greenish yellow, smooth, a little over 

 ^V hich in length and about one half as wide. The eggs hatch 

 in twelve to fifteen days. The larvse leave the egg-shell through 



