76 



INSECT ENEMIES OF THE BOLL WEEVIL. 



Desmoris scapalis LeConte. This weevil (fig. 21) occurs mainly 

 on the black prairie in Texas and breeds in the heads of Sideranihus 

 ruhiginosus. It is parasitized by Microbracon mellitor. 



ANTHONOMIN^. 



Macrorhoptus spJiseralcix Pierce. This weevil was found breeding 

 in stems of Spliseralcea angustifolia. It is the host of Eurytoma 



TYLODERMATIS. 



TacJiypterellus quadrigihhus Say. This fruit weevil breeds in the 

 seed of apple, pear, Cratsegus oxyacantha, and Cratsegus mollis. It is 

 known to us to be parasitized by Cerambycobius cyaniceps and 

 Catolaccus hunteri. 



Smicraulax tuherculatus Pierce. This species breeds in the stems 

 of mistletoe (PJioradendron flavescens) throughout Texas, and evi- 

 dence of its work has been observed in Louisiana and Mississippi. It 



is parasitized by Eurytoma tylo- 

 DERMATis, Cerambycobius cyani- 

 ceps, Catolaccus hunteri, and 

 Microbracon mellitor. 



Anthonomus fulvus LeConte. 

 This v/eevil breeds in the larger 

 buds of Callirrlioe involucrata and 

 C. digitata. It is a characteristic 

 woodland and meadow insect in 

 Oklahoma and Texas . The known 

 parasites are Catolaccus incer- 

 Tus and Microbracon mellitor. 

 Anthonomus signatus Say. The 

 strawberry weevil is mainly char- 

 acteristic of the humid Austral zones, and it breeds in the buds of 

 strawberry, blackberry, dewberry, raspberry, Rubus viUosus, Poten- 

 tilla canadensis, and Cercis canadensis. It is parasitized by Micro- 

 hracon anihonomi, Calyptus tihiator, Catolaccus hunteri, C. incer- 

 Tus, and C. anthonomi. The two latter species were described from 

 this weevil. 



Anthonomus alhopilosus Dietz. This little Texas weevil breeds in 

 the capsules of Croton capitatus, C. engelmanni, and C. texense. It 

 is known to us to be parasitized by Microbracon mellitor, Cato- 

 laccus hunteri, C. incertus, and Cerambycobius cyaniceps. 



Anthonomus nigrinus Boheman. This species is eastern in habitat 

 and breeds in the buds of Solanum carolinense, and the potato (S. 

 tuberosum). It is the host of Entedon lithocoUetidis, Eriglyptus 

 rolustus, Catolaccus incertus, and C. anthonomi. 



Fig. 21.— The ironweed weevil {Desmqris sea. 

 palis), a cohostof boll-weevil parasites. En- 

 larged. (From Hunter and Hinds.) 



