88 



WASP STUDIES AFIELD 



FIG. 20 A. The mud cells of Pseudagenia sp. from which adults of 

 the Mutillid wasp Sphaerophthalnm scaeva emerged. Natural size. 



says that Agcnia mcllipes makes thimble-shaped cells under 

 bark, logs and stones, and that they are parasitized by 

 Pteromalns sp. and Osprynochotns jnnceus Cr. The cells 

 here illustrated can hardly be called thimble-shaped. 



A collection of Pseudagenia sp. mud cells was found 

 under the loose bark of a tree (fig. 2OA), and another 



15 Loc cit. p. 66. 



