AUT. 17 MASKELL ASTEROLECANIHsTAE MORRISON 3 



anal region much as in Lecaniodiaspis, invaginated, with two pseudo- 

 plates, each somewhat wrinkled and bearing two small setae, about 

 8,0, long, towards the posterior end; anal ring narrow, with a single 

 row of pores and six setae, each about oS/x long; apical setae about 

 60/A long. 



Larva (very poor embryonic only). — Shape uncertain; antennae 

 6-segmented, third and sixth nearly equal; legs not unusual; an- 

 terior spiracles with a single short broad spiracular spine at margin 

 opposite each, this accompanied by a much smaller rounded spine; 

 anal region much as in Lecaniodiaspis larvae, ring with six setae. 



Holotype and paratypes. — Cat. No. 40358, U.S.N.M. 



Described from a few imperfect examples received within their 

 galls from Mr. W. W. Froggatt under his lot No. 24, collected by 

 him on Leptospermwm laevigatum (Myrtaceae) in New South Wales. 



As indicated above, the actual affinities of this species seem to be 

 with the genus Lecaniodiaspis ^ rather than with Amorphococcus^ the 

 only important morphological differences, so far as the species of the 

 first genus have been studied, lying in the greater reduction of the 

 antennae and in the smaller number of anal ring setae. The habit iSy 

 of course, quite different from that normal to Lecaniodiaspis. Pend- 

 ing critical study on the Asterolecanine genera, it has seemed best to 

 refrain from an attempt to place this insect generically with any 

 positiveness. From the available information, it appears to differ 

 decidedly from the other two species, mesuae Green and acaciae 

 Brain, now included in Amoi'phococcus. 



Genus ASTEROLECANIUM Targioni-Tozetti 



So few species in this genus were described by Maskell that no 

 attempt has been made in this paper to do more than indicate the 

 closest relatives of the species considered. From the complications 

 that have developed from this limited study of the specimens in- 

 cluded in the Maskell collection and of specimens supposed to repre- 

 sent certain of his species, received from other sources, it seems 

 highly desirable that all obtainable material of at least the Aus- 

 tralian species of the genus should be worked over critically. 



ASTEROLECANIUM ACACIAE. new species 



Plate 1, figs. 11-20 



References,— Ko^^kQll, Trans. N. Z. Inst., vol. 27, for 1894, 1895, 

 p. 63 (part).— Froggatt, Agr. Gaz. N. S. Wales, vol. 26, 1915, p. 769 

 (part). 



Habit. — On twigs of the host ; the test with a whitish fringe. 



Adult female. — As mounted, practically circular, diameter 0.7 mm. ; 

 derm membranous; antennae reduced to small cones bearing two or 

 three stout setae; legs wanting; spiracles small, each with a loose 



