30 



THE MEXICAN COTTON-BOLL WEEVIL. 



Many of the weeds in the vicinity of the cotton fields are attacked 

 by different Bpecies of weevils which may in some respects resemble 

 the boll weeviL Some of these weevils are of a general dark color and 

 !ia\ c beaks wit h which to puncture theirfood plants. On close observa- 

 tion it v. ill be found thai the weevils which are discovered on other 

 weeds are breeding in those weeds. They are not the boll weevils 

 and will not attack the cotton. Many of these native weevils are also 

 found on the cotton plants at the nectar which is produced by the 

 squares, blooms, and leaves. These weevils simply visit the cotton 

 plants in older to feed upon this nectar and do not injure the plant 

 in aii\ way. The following list contains the names and references to 

 the habit- of some of the most common weevils which occur in and 

 about cotton held-: 



\ often mistah nfor the boll weevil (Anthonomus grandis Boh. I. (PI. II, a.) 



Weevil. 



Attack-. 



Anthonomus albopilosus Dietz 



Seed pods of wild sage (Croton). 



lomus ( n<i< nii Cano 



Pepper pods. 



Anthonomus ful V US Le C. (PL II, b) 



Purple mallow buds. 



Anthonomus signatus Say 



Blackberry, dewberry, and strawberry 





buds. 



A nihribus cornutus Say 



Cotton stems. 



■us fasciculatus DeG 



China-berries, coffee beans, and old cotton 





bolls. 



Balaninus nasicus Say 



Acorns. 



Balaninus victoriensis < 'hiti 



Live oak acorns. 



striata Say 



Roots of ragweed (Ambrosia 



\ Say 



Roots of cockle-bur (Xanthium). 



( 'halcoa\ rm us a ru us Boh 



Cowpea pods. 



Conotrachelus elegans Say (PI. 11,/) 



Galls and nuts of pecan-. 



Conotrachelui erinaceus (PI. II, e) 



Habits unknown . 



( 'onotrachi lus l< ucophseatus Fab 



Stems of careless weed (Euphorbia ). 



< 'onotrachi Ins 7U2SO LeC 



Acorns. 



( 'onotrachi lus nenuphar Bbsl 



Fruit of plums and peaches. 



•is constrictus Say 



Seed of sunflower (Helianthus). 



Desmoris scapalis Le< ' 



Flower heads of broad-leaved gum plant 





(Sideranthus). 



Dorytomus mucidus Le C. (PI. II, d) 



Cottonwood catkins. 



us imbricatus Say ! 



Habits unknown, adult foods on foliage. 



J j,i nii; II us I IIl-I 



Habits unknown, visits cotton nectar. 



Gera us picumnus Bbsl : 



Habits unknown, visits cotton nectar. 



' - ch ria n ol> I/is Le( ' 



Joints of prickly pear. 

 Pino bark. 



Hylobius pales Hbst ; 



/. / 1 (/.v scrobicollis Boh 



Stems of ragweed I Ambrosia). 

 Pine branches and bark. 



Pachylobius picivorus ( rerm 



Pissodes nemorensis Germ. I PL II. c)... 



Pino branches and bark. 



RhynchiU s meocicanus Gyll 



I'v isebuds. 



matus palmacollis Say 



Morning-glory pods. 



imicorci Let ' 



Tobacco stalks. 



iftaris /' '"//" Le( ' 



Spanish thistle -talk-. (Solanum ros- 





tra turn). 



LeC 



Pods of false indigo (Bapti-ia 



Many other insects are sometimes mistaken for the boll weevil. 

 This list includes only the species which are more or lesss closely 

 allied to thai insect and consequently more commonly confused 

 with i: . 



