74 



INSECT ENEMIES OF THE BOLL WEEVIL. 



pods of which it breeds proHfically. It is a continuous breeder and 

 is highly parasitized by Ceramhycohius hrevicaudus, Cerambycobius 

 CYANiCEPS, Horismenus sp., Heterospilus prosopidi^, Eurytoma sp., 

 MiCRODONTOMERUs ANTHONOMi, Catolaccus incertus, and Several 

 other species. 



Laria ohtecta Say. The common bean weevil is known to be para- 

 sitized by Cerambycobius cyaniceps and Bruchohius laticoUis. 



Laria compressicornis Schaeffer. This bruchid, which breeds in 

 the pods of Acuan illinoensis, is parasitized by Cerambycobius cy- 

 aniceps and Heterospilus prosopidis. 



Laria ochracea Schaeffer. This bruchid, which breeds in the pods 

 of Vicia sp., is parasitized by Cerambycobius cyaniceps, C. cush- 

 MANi, Eurytoma sp., and Heterospilus prosopidis. 



Spermophagus rohinise Schaeffer. This bruchid is very common in 

 the pods of the honey locust {Gleditsia triacanthos) , and the water 

 locust (Gleditsia aquatica), both of which are trees belonging to the 

 humid Austral zones. It is parasitized by Heterospilus hrucJii, Cer- 

 ambycobius cyaniceps, Eurytoma tylodermatis, and Urosigalphus 

 hrucM. 



RHYNCHOPHORA. ANTHRIBID^. 



Brachytarsus altematus Say. This beetle probably breeds under 

 many different circumstances. The only records are from a fungus 

 gall on Ipomosa pandurata, and from the stems of Elymus virginicus 

 and Sideranthus rubiginosus. It apparently belongs to the humid 

 Austral zones. It is parasitized by Microdontomerus anthonomi 

 and a Bracon. 



Arxcerus fasciculatus DeGeer. This very mdely distributed 

 Lower Austral insect (see fig. 19), known commonly as the coffee- 

 bean weevil, 

 breeds in stored 

 vegetable prod- 

 ucts, in the seed 

 of Theohroma 

 cacao, in the 

 berry of the coffee 

 tree (Cqffea ara- 

 hica), in diseased 

 cotton bolls, in 

 seed pods of 

 Cassia occident- 

 alis and C. oh- 

 tusifolia, in seeds 



of Indigofera tinctoria, in green and decaying fruit of Melia azedarach, 

 in green and dry cornstalks, and in dry acarian galls on Ipomoea 



Fig. 19. — The coflPee-bean weevil (Ara;cems fasciculatus) , a cohost of boll- 

 weevil parasites: a, Larva; 6, adult; c, pupa. Enlarged. (From Chit 

 tenden. ) 



