256 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



runs in Pembrokeshire, was parasitic on Ectohius nigripes Stephens ; 

 however, this wasp is undoubtedly parasitic on ants, probably on ant 

 larvae (Donisthorpe and Wilkinson, 1930). 



The wasps that are known to capture cockroaches, and summaries 

 of their biology, are listed below. 



WASPS THAT PROVISION THEIR NESTS WITH COCKROACHES 



Family POMPILIDAE 

 Pompilus bracatus Bingham 

 Natural hosts. — Cockroaches, India (Bingham, 1900). 



Pompilus sp. 



Natural host. — Cockroach, Nyasaland (Lamborn in Poulton, 

 1926) : The wasp was collected leading a nymph of the cockroach by 

 its antenna. The cockroach was in a stupefied state, and its antennae 

 were bitten of¥ to about half their length. 



Salius verticalis Smith 

 Natural hosts. — Cockroaches, India (Bingham, 1900). 



Family AMPULICIDAE 



The species of Ampulex do not appear to make special nests in 

 which to lay their eggs but drag their prey to any convenient hole, or 

 crack in the ground (Arnold, 1928). Although many species of Am- 

 pulex have been described, the prey of only a small number of species 

 have been discovered, but the known prey are all cockroaches. 



Ampulex amoena Stal 



Synonymy. — Ampulex novarae Saussure [Krombein, personal com- 

 munication, 1957]. 



Natural hosts. — Periplaneta americana and Periplaneta aiistralasiae, 

 both as small nymphs, Formosa (Sonan, 1924, 1927) : The wasp 

 stings a nymph about one inch long and carries it to a suitable place, 

 such as bamboo pipes, folds of newspaper, or books (in houses), for 

 oviposition. 



Periplaneta picea, Japzn (Kamo, 1957; Kohriba, 1957). 



Experimental hosts. — Periplaneta picea, Japan (Kamo, 1957; Koh- 

 riba, 1957). 



Kamo (1957) observed that in the field both males and females 

 sucked juices from wounds they made in the stems of Clerodendron 



