THE BROAD-BEAN WEEVIL. 



THE ADULT. 



The adult (fig. 2) is from 3.5 to 4.5 mm. long and a little over 

 half as wide. The general color is black, with white markings on the 

 elytra and pygidiuni, giving it a somewhat mottled grayish appear- 

 ance. The head is dark. The basal four joints of the antennic are 

 reddish brown, the remainder black. The forelegs 

 are reddish brown and black, while the middle 

 and hind pairs are black. 



The species closely resembles the pea weevil {B. 

 pisoruin L., fig. 3), but may be separated by the 

 following characters : 

 Posterior femora acutely dentate; thorax broad; pattern 



of elytra well defined; pygidiuiu with a pair of dis- 

 tinct apical black spots pisorum L. 



Posterior femora obtusely or obsoletely dentate; thorax 



narrow ; pattern of elytra more or less suffused ; 



pygidium with black apical spots lacking or illy 



defined mfimanus Boh. 



Fig. 2. — The broad- 

 bean weevil 

 (B r u c h u s rufl- 

 manus) : Adult or 

 beetle. Enlarged.^ 

 (Chittenden.) 



SYNONYMY. 



Bruchas mfimanus Bobeman. 



Brtichus ruflmanus Schoenherr, Gen. et Spec. Curculionidum, v. 1, p. 58, 1833. 

 Bruchus granarius auct. (not L.) Westwood, Curtis, Ormerod, Wood, Riley, 



Fletcher, Lintner, et al. 

 Mylabris rufimuna Boh., Baudi, Deutsch. Ent. Zeitschr., 1880, p. 404. 



The Bruchus granarius L. 

 is Laria atomaria L., 

 Syst. Nat., 12th ed., p. 

 605, 1776-1778. 



RECORDS OF OCCUR- 

 RENCE IN CALIFOR- 

 NIA. 



Although horse beans 

 were grown in Cali- 

 ornia as early as 1887, 

 the horse-bean weevil 

 was not recorded as ac- 

 tually established in the United States until September 18, 1909. On 

 that date Mr. I. J. Conclit, then collaborator of the Bureau of Ento- 

 mology, collected live specimens at San Luis Obispo, on growing horse 

 beans (2, 3). Inquiry by the writer among buyers and growlers indi- 

 cates that the weevil was established in California many years before 

 1909. Mr. P. G. Hammer, San Francisco, writes as follows, "We are 

 quite positive of the date, for in our dealing with this variety of beans 

 the first indication of weevil infestation appeared possibly not later 



Fig. 3. — The pea weevil {Bruchus pisorum) : a. Beetle 

 6j larva; c, pupa. Enlarged. (Chittenden.) 



