XII, D, I Robinson: Coccidie of the Philippine Islands 29 



margin sloping with a slight notch or bidentate; two bifurcate 

 plates between lobes, palmate plates laterad of second lobes, be- 

 yond these is a conspicuous spiny process (Plate IV, fig. 12). 

 Dorsal tubular spinnerets about 55 on each side. Circumgenital 

 glands in two lateral groups each of 6 to 8 orifices. [From 

 Newstead, Monograph of British Coccidse (1905), 1, 127.] 

 Found on citrus cuttings, Philippine Islands. 



Genus ASPIDIOTTJS Bouche 



Type, Chermes hederse Vallot. 

 Scale of female circular or nearly so, exuviae at or near the 

 center, scale of male somewhat elongated with larval skin at one 

 side of center or near one edge. Caudal margin of female 

 varies. Hemiherlesia Leonard, a subgenus, includes those spe- 

 cies in which the second and third pairs of caudal lobes are 

 smaller or absent and the anal opening is very large. The type 

 of Hemiherlesia is Aspidiotus rapax Comstock. 



Synoptic table of the species. 



a\ Circumgenital glands present. 



6\ Caudal margin of female similar to that of A. rapax (Plate V, figs. 

 1 and 7) ; scale translucent white or gray. 



c\ Female scale circular, exuviae dark brown to black cydoniae. 



c'. Female scale similar to A. cydoniss, exuvi^ yellow to g1-een, slightly 



lateral cydoniae greenii. 



c'. Female scale slightly elongated, clear yellow to creamy white, 



central exuvise large and yellow latanise. 



v. Caudal margin not so. 



d^. Median lobes of caudal margin more than twice as large as others; 

 cephalad of median lobes a conspicuous thickening about as long- 

 as the lobes (Plate V, fig. 2) coryphae. 



d^ Not so; female scale transparent white or yellow. 



e\ Adult female circular; caudal margin with four pairs of lobes 



often distinguishable (Plate V, fig. 3) destructor.* 



e^ Adult female pyriform; caudal margin with three pairs of lobes, 

 each set on a projection of the margin (Plate V, fig. 5). 



transhicens.* 

 a'. Circumgenital glands absent. 



f. Female scale flat, dark ferruginous, second lobes of caudal margin 

 similar to, but smaller than, median lobes (Plate V, fig. 6). 



tayabanus. 

 /■. Female scale convex, gray or yellowish; only median lobes well devel- 

 oped (Plate V, fig. 7) rapax. 



* The difficulties in separating Aspidiotus destructor and A. translucens are obvious. 

 Ettore Malenotti, in a recent paper, concludes that they are extremes of variation of a single 

 species, which is to be called A. destructor. It apper.rs tha', E. E. Green is of the same 

 opinion. 



