BIOLOGY OF THE COHOSTS. 



77 



AntlwnoTmis seneolus Dietz. Tliis Texas weevil breeds commonly 

 in fiin2;iis galls on the leaves and in tlie buds of Solanum eleagnifolium 

 and S. torreyi and also in tlio buds of *S'. rostratum. It is parasitized 

 by Catolaccus hunteri and a Eurytoma. 



Anthonomus eugenii Cano {xneotinctus Cliampion). The pepper 

 weevil (fig. 22) breeds in most of tlie cultivated and wild peppers 

 and may be considered a serious pest. It is parasitized by Catolac- 

 cus HUNTERI, MiCROBRACON MELLITOR, and PeDICULOIDES VENTRI- 

 COSUS. 



Anthonomus squamosus LeConte. Tliis is a weevil typical of tlie 

 gypsum prairie of the Lower Sonoran Zone, although occurring less 

 abundantly in the western edge of the moist Austral zones. It 

 breeds in the flower heads of Grindelia squarrosa nuda, G. inuloides, 

 and perhaps also on other Grindelias and Heliantlii. It is known 

 to us to be parasitized by Microbracox 

 MELLITOR, Catolaccus hunteri, and Eury- 

 toma TYLODERMATIS, 



Anthonomus nehulosus LeConte. This wee- 

 vil breeds in the buds of Crataegus in Louisi- 

 ana and Arkansas. It is parasitized by Cato- 

 laccus HUNTERI and Sigalph,us sp. 



Anthonomus heterothecx Pierce. This small 

 weevil breeds in the flower heads of Hetero- 

 theca suhaxillaris and probably other asteroid 

 flowers. It is parasitized by Catolaccus 

 HUNTERI and Eurytoma tylodermatis. 

 Previous records by the senior author on 

 Anthonomus disjunctus LeConte all refer to 

 tliis weevil. 



Anthonomus aphanostephi Pierce. This weevil breeds in the heads 

 of Aphanostephus skirrohasis, and is parasitized by Catolaccus 



Fig. 22.— The pepper weevil 

 (Anthonomus eiifjcnii), a cohost 

 of boll-weevil parasites. En- 

 larged. (From Hunter and 

 Hinds.) 



INCERTUS. 



TYCHIIN^. 



Tychius sordidus LeConte. Tliis Austroriparian weevil breeds in 

 the pods of Baptisia hracteata and B. leucantha. It is parasitized 

 by Cerambycobius cyaniceps. 



CRYPTORHYNCHIN.E. 



Chalcodermus seneus Bohcman, the common cowpea weevil (fig. 23), 

 is abundantly parasitized by Ennyomma globosa, antl is likewise a 

 host of Ennyomma clistoides and Sigalphus curculionis. 



Conotrachelus affinis Boheman. This weevil breeds in liickory nuts 

 and is parasitized by Myiophasia ^nea and Sigalphus curculionis. 



