Australian Braconidae in the British Museum. 109 



The species of this genus seem to be numerous in Australia, 

 especially in the southern half, and doubtless many more 

 species remain to be discovered. The structural differences 

 a re usually small, and without a long series of specimens it is 

 rather difficult to come to definite conclusions as to the extent 

 of colour variation, but where I have taken a number of 

 specimens I have not found any important colour varieties. 



KEY TO THE AUSTRALIAN SPECIES. 



1. Mesonotum, scutellum and median 



segment black. 2. 



Mesonotum at least red. 5. 



2. Intermediate and hind legs entirely 



black A. latibalteata, Cam. 



Intermediate legs yellowish or red- 

 dish testaceous. 3. 



3. Hind tibiae wholly black, hind coxae 



and tibiae testaceous red. Length 



8 mm A. festinata, Turn. 



Hind tibiae with a narrow white ring 



at the base. Length 5 mm. 4. 



4. Hind legs black ; scape black . . . A. ruficeps, Szep. 

 Hind coxae, trochanters, femora and 



the scape yellow testaceous . . . A. tenuissima, Turn. 



5. Median segment punctured-rugose. 0. 

 Median segment smooth. 8. 



6. Intermediate femora wholly black, 



hind tibiae black, with a narrow 

 white ring at the base. Length 



8 mm A. maligna. Turn. 



Intermediate femora mostly or en- 

 tirely testaceous. Length not 

 exceeding 5 mm. 7. 



7. Hind tibiae black, with a very narrow 



obscure whitish ring at the base. . A. minima. Turn. 

 Hind tibiae with the basal half white, 

 with a narrow black ring near the 

 base A. rugosa, Turn. 



8. Intermediate legs wholly black . . . A. meridionalis, Turn. 

 Intermediate legs not wholly black. 9. 



9. Intermediate legs wholly testaceous . A. unimaculata, Turn. 

 Apex of intermediate femora and 



middle of tibiae yellowish . . . . A. tricolor, Szep. 



