104 PROCEEDINGS OF TJIE ROYAL SOCIETY OF QUEENSLAND. 



less readily selected by the ohalcid for parasitism than the 

 others mentioned. Johnston and Bancroft (1020) added Musca 

 domestka, M. vetustissima, 31. hilli, and M. teme-reginre. Altson 

 (1920) gives a list of British hosts. No less than eight specie., 

 of flies {Musca domestica and seven blowflies) are mentioned 

 by Girault and Sanders as capable of becoming parasitized by 

 Nasonia} We have found the v. asp able to parasitize, in 

 addition, the pupae of the various species ol SarcopJmga recently 

 described by us as breeding in carrion {S. aiirijrons, S. impatiens, 

 S. irrequieta, S. misera., etc.) 



2. Paraspilomicrus froggatti Johnston and Tiegs. 



(Figs. 4, 7, 8. is. 19.) 



This Proctotrypid Avas first obtained from naturally 

 infected Lucilia pupae in November, 1920. A number of 

 wasps (eight altogether) were bred from a single pupa. 



Fertilisation takes place soon after hatching. The male 

 sits upon the female, the long antennae intertwining and 

 undergoing a short vibration every few seconds, producing a 

 most ludicrous effect. During oviposition the wasp adopts a 

 curious arched attitude (fig. 8), the egg-lajdng process lasting 

 about ten m'nutes. No developmental stages have been 

 observed by us. 



This wasp was seen around Brisbane in October and 

 November, 1920, and again in April, 1921, but never 

 commonly. A description of this apparently new genus and 

 species is given at the end of this paper. 



3. Spalangia muscidarum Richardson. (Fig. 3.) 



This wasp was first recorded from Australia by Johnston 

 and Bancroft (1920), who found it parasitizing various flies 

 {Musca spp. and Stomoxtjs calcitrans) in Eidsvold, Burnett 

 River, Queensland. They stated that in captivity females 

 would parasitize Pycnosoma rufifacies, P. varipes, Para- 

 calliphora augur, Chrysomyia dux, Sarcophaga spp., as well as 

 other sheep and carrion flies. We have also seen a number 

 of these wasps bred from Lucilia pupae from Roma, by Mr. F. 

 Taylor ; also some in the U.S. National Museum, Washington, 

 bred from Musca domestica in Adelaide and forwarded by 

 Mr. A. M. Lea. During February this wasp appeared attacking 

 the large golden species of Sarcojihaga {S. impatiens, etc.) in 

 Brisbane. It is, then, one of the natural enemies of sheep 

 maggot-flies. 



1 A paper dealing with the biology of N. brevicarius has been 

 published by E. Roubaud (Bull. Sci. France and Belgique 1917, 

 pp. 425-439— abstract in Rev. Appl. Ent., B, 5, 1917, pp. 157-9). 



