46 PARASITES OF THE COTTON BOLL WEEVIL. 



8. Anthorwmus nigrinus Say is an eastern weevil which breeds in 

 the buds of Solarium carolinense and various other solanaceous plants, 

 occurring principally in the spring and early summer, but not con- 

 fined to one generation. It oviposits in the buds, causing them to 

 fall. The larva makes its cell in the center of the bud through the 

 pistil and all of the stamens and pupates in this cell. It is a host of 

 Catolaccus incertus. 



9. Anthorwmus albopilosus Dietz is a fall species which breeds in 

 the seed of Croton capitatus and C engelmanni, weeds which are very 

 abundant in pastures. The larvae eat out one seed and then enter a 

 second and form their pupal cell in tins. The weevil serves as a host 

 to Cerambycobius cyaniceps, Catolaccus incertus, and Bracon mellitor. 



10. Anthonomus seneolus Dietz is a spring species winch breeds in 

 the buds of Solarium torreyi, S. rostratum, and S. eleagnifolium. The 

 larva? feed within one or two anthers, in the latter case forming a cell 

 winch cements the two together. In many cases the flower does not 

 fall, and is able to fruit. The weevil is a host of Catolaccus incertus. 



11. Anthonomus eugenii Cano (seneotinctus Champ.), the pepper 

 weevil, is a recent introduction from Mexico. It is a fall species, 

 winch breeds in the interior of the cultivated peppers. (See Plate III; 

 A, C.) It is a host to Catolaccus incertus, Bracon mellitor, and Pedi- 

 culoides ventricosus, as determined by Professor Herrera. Anthonomus 

 mexicanus Boh., another pepper weevil, is very likely identical. 



12. Anthonomus squamosus Lee. breeds in the heads of Grindelia 

 squarrosa, a fall plains plant, which is very abundant in semiarid 

 Texas. The weevil larva makes a cell among the seed, which is 

 formed of the hardened gum of the flower and excreta. It has 

 probably only one generation. It is very highly parasitized and 

 principally by Bracon mellitor and Eurytoma tylodermatis. 



13. Anthonomus disjunctus Lee. breeds in the heads of Heterotheca 

 subaxillaris , a fall plant, which is very abundant along roads, waste 

 places, and on meadows. The weevil larva makes a small cell, formed 

 of the hardened gum and excreta of the weevil, among the seed. 

 There is but one generation. Eurytoma tylodermatis and Catolaccus 

 incertus have both been bred from this weevil. 



CRYPTORHYNCHIN I . 



14. Conotrachelus affinis Boh., the hickory nut weevil, has been 

 found to be the host of Myiophasia senea. It is an early summer 

 weevil. Pupation is in the ground. 



15. Conotrachelus nenuphar Herbst, the plum and peach curculio, 

 breeds in the fleshy part of the fruit and pupates in the ground. It 

 is the host of Sigalphus curculionis, which has once been bred from 

 Anthonomus grandis. 



