49 



either of the species previously mentioned. This insect has been 

 found attacking white prickly poppy {Argemone alba) and tumble- 

 weed {Amaranthus grcecisans) in the spring, and probably breeds on 

 Prionojjsis ciliata Nutt and the broad-leaved gum plant {Orindelia 

 squa7'rosa). 



In general the food habits of any species are among its distinctive, 

 si)ecific characters, and as the structural differences are easily over- 

 looked and difficult of appreciation by anyone unacquainted with the 

 careful study of insects, a rather full, though by no means complete, 

 list is here given of the species which have been reported to the 

 Division of Entomology as having been confused with the boll weevil.'* 

 Many of the most common species will be found figured among the 

 illustrations. The scientific names of the insects are given because 

 they are definite and refer positively to a single species, whereas the 

 common names are used so loosely that the same name may be applied 

 to a number of species having possibly similar habits. The boll w^eevil 

 is included in this list, and figures of the adult are given in the plates 

 to facilitate comparison. In many cases no common name has yet 

 been given to the species. Seven of the species mentioned attack 

 living cotton and five species are found feeding only in decaying bolls. 

 The occurrence of the remainder upon cotton is merely incidental. 



Insects often mistaken for the boll iveevil. 



Scientific name. 



Common name. 



Usual food plant. 



Plate 

 figure. 



WKEVILS. 



Anthonotnus yrandis Boh 



Antho7ionius albopilostisDietz 



Authonomus prunicida 



Balaninus uniformis auct 



CentrinuspeniceUus Hbst 



Cen trinus i)icumnus Hbst 



Chalcodermus oeneus'Boii 



Desmoris scapalis Lee 



Desmoris constrictus Say 



Dorytomus mucidus Lee 



Lixus Icesicollis Lee _ 



Coccotorus scutellaris 



Bar is striata Say 



Bar is trajisversa Say 



Anihribus cornutus Say. 



ArcBcertis fasciculatus DeG . . . 



EpiccEi-us ivtbricatus Say. . 



Hylobius pales Hbst 



Rhynchites inexicanus Gyll 



Tychius sordidus Lee 



Ophryastes bituberosus Shp 

 Trichobaris mucorea Lee _ . 



Mexican cotton boll weevil 



Cotton squares and bolls. 



XIV, 5a, 53. 



Plum gouger . 

 Acorn weevil . 



Cowpea-pod weevil 



Plums 



Acorns 



Beetle in flowers 



do 



Cowpea pods 



Broad-leaved gum plant . 



xrv,5r. 



XIV, 55. 



XV, 61. 



XV, S3, 64. 

 xrv, 58. 



Blood-weed weevil . 



Apple cureulio 



Striped Baris 



Transvei'se Baris... 

 Horned stem borer. 

 Coffee-bean weevil . 



Imbricated snout beetle 



Willow 



Ragweed {Ambrosia spp) . 



Apple 



Stems of ragweed 



Roots of cocklebur . , 



Cotton stems 



Coffee beans and old cot- 

 ton bolls. 

 Omnivorous 



Mexican rose beetle. 



Beetles attack rose 



Common in cotton fields. 



Found on cotton 



Tobacco stalks 



XIV, 54. 



xrv, 56. 



XV; 59, 60. 



XV, 62. 



XVI, 



Tobaceo-stalk weevil _ 



«Iii the preparation of this list we are under obligations for assistance to Mr. 

 F.'H. Chittenden, who has also furnished information in regard to the food habits 

 of the species. 



21739— No. 45—04 i 



