465 



Notes on the Bruchidae and Their Parasites in the 

 Hawaiian Islands. 



BY JOIIX COLBUKX BlUDWELL. 



Geographical. 



The Bruchid-ae constitute one of the smaller families of Co- 

 leoptera, abont 700 species being listed in the most recent cat- 

 alogue, that of Pic (Coleopterornm Catalogais, pars. 55, 1913). 

 In this work they are arranged in thirteen genera of which 

 Bruclius alone is cosmopolitan in the sense that it extends into 

 all the major zoogeographical regions. However, when this poly- 

 morphic genns is dismembered into its constituents it will 

 doubtless be found that none of these are so widely distributed. 

 Of the other genera Speifnophacjus and Pachymerus (=Caryo- 

 honis auet.) are widely distributed but do not extend into the 

 Australian region if we include Xew Caledonia in the Indo- 

 Malayan region where it belongs entomologically. Pseudopa- 

 chymerus Pic (=Pachy merits auct.) has its metropolis in the 

 Neotropical and extends into the Ethiopian and Palaearetic. 

 Carymenopon occurs in the Indo-Malayan and Ethiopian re- 

 gions. The remaining genera are known from a single region ; 

 Rhaehus, Pygohruclius, and Kytorrhinus from the Palaearetic; 

 Pygiopachymerus, Phelomerus, Impressobruchus, Megahrhipis, 

 from the Xeotropical ; Diegobruchiis from the Ethiopian; no 

 peculiar genera occur in the Indo-Malayan, the Australian, or 

 the Nearctic regions. The I^eotropical region has the greatest 

 number of recorded species with about 300 ; next comes the 

 Palaearetic with about 200 ; the Ethiopian and N^earctic have 

 each about a hundred species known but when the African spe- 

 cies are as well known as the North American they will doubt- 

 less approach the numbers of the Palaearetic; from the Indo- 

 Malayan only about 50 species are recorded and from the Aus- 

 tralian only about 10 ; none are known to occur in the Polyne- 

 sian Islands or in Xew Zealand excepting those introduced 

 through commerce. 



