228 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Family CONOPIDAE 



Stylogaster sty lata (Fabricius) 



Hosts. — Cockroaches, Brazil (Souza Lopes, 1937) : L. Travassos 

 was quoted as having observed this species pursue cockroaches that 

 were escaping columns of the army ant Eciton sp. Souza Lopes 

 (1937) stated that the female deposits eggs on the cuticle of the host 

 near the end of the body ; the Qgg is barely inserted and two recurrent 

 hooks prevent it from falling off. Souza Lopes (1937) also observed 

 other species of Stylogaster pursue Orthoptera, but he was unable to 

 devote proper attention to the behavior of the flies. 



Stylogaster spp. 



Hosts. — Chorisoneura sp., Brazil (Souza Lopes, 1937) : An adult 

 specimen was found in a museum collection with an egg of Stylogaster 

 attached to the posterior end of its abdomen. 



Cockroaches, Panama (C. W. Rettenmeyer, personal communica- 

 tion, 1959) : "Seven species were collected hovering over army ant 

 swarms and a few flies were seen apparently attacking cockroaches that 

 had been flushed by the ants." 



Family LARVAEVORIDAE 



Calodexia (?) venteris Cur ran 



Hosts. — Periplaneta amerkana, Brazil (Souza Lopes, 1937) : Ob- 

 tained complete evolution of the parasite in this host. This may have 

 been an experimental host. 



Calodexia spp. 



Hosts. — Cockroaches, Panama (Rettenmeyer, personal communica- 

 tion, 1959) : Swarms of army ants are accompanied by about 20 species 

 of Calodexia. These flies larviposit on the cockroaches, crickets, and 

 possibly other arthropods that are flushed from cover by the ants. 

 Larvae were found in one(?) cockroach. Larvae from an adult of 

 Calodexia were introduced experimentally into a cockroach and suc- 

 cessfully reared. 



Undetermined tachinids 



Hosts. — Eurycotis fioridana, from Florida (Roth, unpublished 

 data, 1953) : Three larvae (det. by W. W. Wirth) were found in a 

 living adult male. 



Panesthia anstralis, from Australia (Roth, unpublished data, 

 1957) : Reared from a wild-caught cockroach that was maintained in 

 a laboratory colony. 



