10 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.71 



Genus CALLOCOCCUS Ferris 



Ref&i^ences. — Ferris, Can. Ent., vol. 50, 1918, p. 328. — Morrison and 

 Morrison, Proc. U. S. Nat. Mus., vol. 60, art. 12, 1922, p. 32. 



As a consequence of the present study on the Maskell collection of 

 Coccidae, the writers have been successful in removing two more 

 species from Maskell's scrap-bag genus S'phaerococcus^ and in attach- 

 ing them, tentatively, at least, to this already described genus in the 

 subfamily Asterolecaniinae. These two are the Sphoerococcv^ acaciae 

 of Maskell and the Sphaerococcus leptospe'nni of Maskell. In habit 

 characteristics these two differ widely from the genotype and from 

 one another, but they appear to have much the same general morpho- 

 logical characteristics, possessing as they all do a definite median 

 longitudinal dorsal compound pore band running from antennae to 

 anal ring. The inclusion of these two additional species makes 

 desirable some modification of the generic diagnosis previously given 

 by the writers for CaUococcus (reference cited), and a revised diag- 

 nosis is accordingly given below : 



Asterolecanine coccids with adult female with varying habit char- 

 acteristics, inclosed in a waxy test, covered by a mass of white cottony 

 secretion, or forming a swollen twig gall; body a sac, stout to elon- 

 gate-elliptical in outline ; derm membranous or more or less chitinized 

 in the median dorsal area ; antennae reduced to short stubs or to flat 

 plates; legs wanting; beak short conical, 1-segmented; spiracles 

 with short wide bar and a few quinquelocular disk pores adjacent; 

 derm pore types including bilocular 8-shaped pores, all of small size, 

 quinquelocular disk pores, possibly some pores with a greater number 

 of loculi, tubular ducts with cup-shaped inner ends, and sometimes, 

 at least, minute circular, apparently simple disk pores, the arrange- 

 ment of these various, but a dorsal median longitudinal compound 

 band, made up of two or more of these types and running from 

 antennae to anal ring, characteristic of the genus; body with short 

 stiff setae, these never numerous nor conspicuous, not differentiated 

 into marginal, spiracular, dorsal and ventral types; anal region 

 wholly undeveloped, the anal ring a small, simple collar placed ven- 

 trally some distance from the nominal posterior bodj^^ margin ; apical 

 setae somewhat larger than remainder, placed between ring and 

 margin. 



Assumed second stage female elongate ovate; derm membranous; 

 antennae stout, strongly tapering from base to apex, 6-segmented; 

 legs stout and short, claw long slender or short and stout ; beak stout 

 conical, 1-segmented; derm with dorsal, ventral and marginal rows 

 of setae; no spiracular spines differentiated; derm without pores 

 other than the quinquelocular disk pores adjacent to the spiracles, or 



