CRYPTORHYNCHIN^. 



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

 is abundantly parasitized by Ennyomma globosa, and is likewise a 

 host of Ennyomma clistoides and Sigalphus curculionis. 



Conotrachelus affinis Boheman. This weevil breeds in hickory nuts 

 and is parasitized by Myiophasia ^nea and Sigalphus curculionis. 



BIOLOGY OF THE GOHOSTS. 77 



Anthonomus seneolus Dietz. This Texas weevil breeds commonly 

 in fungus galls on the leaves and in the buds of Solanum eleagnifolium 

 and S. torreyi and also in the buds of S. rostratum. It is parasitized 

 by Catolaccus hunteri and a Eurytoma. 



Anthonomus eugenii Cano {xneotinctus Champion). The pepper 

 weevil (fig. 22) breeds in most of the 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. This is a weevil typical of the 

 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 Microbracon 

 MELLiTOR, Catolaccus hunteri, and Eury- 

 toma TYLODERMATIS. 



Anthonomus nebulosus LeConte. This wee- 

 vil breeds in the buds of Crataegus in Louisi- 

 ana and Arkansas. It is parasitized by Cato- 

 laccus hunteri and Sigali^hus sp. 



Anthonomus heterothecx Pierce. This smaH 

 weevil breeds in the flower heads of Hetero- 

 theca suhaxillaris and probably other asteroid 

 flowers. It is parasitized by Catolaccus 



hunteri and Eurytoma TYLODERMATIS. fig. 22.-The pepper weevil \ 



Ti • 1 "u xi • u-1 (Anthonomus eiigenii) , a cohos,t 



Previous records by the senior author on of boii-weevii parasites. En- 



AnthonomUS disjunctUS LeConte all refer to larged. (From Hunter and 



this weevil. ^'""^'-^ 



Anthonomus afhanostephi Pierce. This weevil breeds in the heads | 



of Aphanostephus sMrrohasis, and is parasitized by Catolaccus 



INCERTUS. I 



TYCHIIN^. 



Tychius sordidus LeConte. This Austroriparian weevil breeds in j 



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

 by Cerambycobius cyaniceps. 



