250 



THE CANADIAN ENTOMOLOGIST 



The first stage larva is quite as in Antonina. The antennae are six- 

 segmented. The anal lobes (Fig. 33) bear a single stout spine, a short seta and 

 the usual long seta. 



Material examined. From Casuarina quadrivalvis, Australia. 



Genus Amorphococcus Green. 



But two species are at present referred to this genus, one A. mesucB Green, 

 from Ceylon and another A. acacice Brain, from South Africa. With these 



Fig. 33. — Sphaerococcus casiiarince (Maskell); dorsal 



aspect of portion of caudal extremity of 



first larval stage. 



Fig. 34. — Amorphococcus leptospermi (Maskell); A, tubular 



duct; B, anal rings and surrounding structures, left 



half dorsal, right half ventral. 



Sphaerococcus leptospermi Maskell appears to be strictly congeneric, 

 gall makers, the galls appearing as twig swellings. 



All are 



Amorphococcus leptospermi, (Maskell), 



Fig. 34. 



Habit. — Occurring in a twig gall, this gall being merely a swelling with a 

 small, pore-like opening at the top. 



Morphological characteristics. — Adult female apodous and with the an- 

 tennae reduced to mere vestiges, which show three or four minute segments. 

 Derm membranous throughout. Pores of the 8- shaped type small and rather 

 few, scattered over the body but mcst numerous in a narrow zone extending 

 about the lateral margin of the body. Tubular ducts likewise relatively few, 

 of the type shown in Fig. 34A. Anal lobes rather prominent, each bearing one 

 moderately long and two much shorter setae. Anal ring borne at the inner 

 end of a quite deep cleft, apparently at the end of a short invagination, rather 

 small, bearing six slender setae. The mouth of the invagination (Fig. 34B) is 

 surrounded by a narrow chitinous ring. From this ring a chitinized area extends 

 posteriorly along each side of the cleft. 



Immature stages not seen. 



