THE COCCIDAE OF SOI'TH AFRECA. 19 



214. Pulvinaria floccifera (Westw.). 



Coccus floccif era, Westw., Gard. Chron., p. 308, 1870. 



Pulvinaria brassicae, CklL, Can. Ent. xxvii, p. 135, 1895. 



Pulvinaria floccifera, Green, Ent. Mon. Mag. xxxiii, p. 72, 1897. 



Pulviyiaria phaiae, Lull, Ent. News, x, p. 237, 1899. 



Pulvinaria floccosa, Newst., Jl. Roy. Hor. Soc. xxiii, p. 26, 1900. 



Completed ovisac about 6 mm. long and 3 broad, with parallel sides and rounded 

 extremity ; pink in colour, from the numerous ova which are of that colour ; the 

 small amount of white cottony matter which is incorporated in the mass is incon- 

 spicuous owing to the large number of eggs. 



$, young stage : about 2 mm. long, translucent greenish yellow, with the median 

 dorsal area suffused with a pinkish or brownish tint. 



Adult $ about 3 mm. long and almost as broad, moderately convex. The 

 margins are pale translucent greenish yellow, the median dorsal area is reddish 

 brown and the whole dorsum is more or less wrinkled. The crests of the ridges, 

 especially those running to the margin, blackish brown. Anal plates small, of 

 the same colour as the dorsal area or slightly paler. When the ovisac is almost 

 complete, the body of the 5 has shrunken to such an extent that the brownish 

 part of the dorsum is not conspicuous, while the black crests of the ridges are 

 close together and thus give the insect a much darker appearance. 



Antennae 8-jointed, range in ^ : (1) 34-38, (2) 44-51, (3) 65-72, (4) 34-44, (5) 

 34-41, (6) 24-27, (7) 24, (8) 44. 



Leg I : coxa 78, femur + trochanter 190, tibia 163, tarsus 102, claw 24/<. 



Upper digitules very long, slender, with spherical knobs. Lower digitules stout, 

 normal. Anal jjlate about 145/^ long. Just in front of the anal plates there are a 

 few scattered, " rosette " glands and two pairs of long (108//) hairs. Marginal 

 spines about 50// long and 100/^ apart, slender, often with finely divided tips, alter- 

 nating with a submarginal row of similar hairs of about half the size. Stigmatic 

 spines comparatively short and stout, with the outer ends tapering to blunt points. 

 From these to the spiracles extends a double row of small rosette glands. 



Puparium of (^ of the usual type with fche segments of the plates very distinct. 

 The whole puparium is opaque white, appearing finely striate in a longitudinal 

 direction. 



Habitat : On a native plant iSolanuyn sp. ?) Durban ; collected by C. P. v. d. 

 Merwe, July 1916. 



Collection No. : 82. 



A very large percentage of the young forms (about 1*5 mm. long) are very 

 convex and shiny black, obviously parasitized. 



215. Pulvinaria jacksoni, Newst. 



Pulvinaria jacksoni, Newstead, Jl. Econ. Biol, i, p. 155, 1908. 



Professor New^stead's description is as follows : — 



" Ovisac from two and a half to seven times the length of the female ; breadth 

 equal, to the width of the insect ; low convex, sides parallel ; closely felted, tough 

 and web-like in texture. Length 16*75-42 mm. 

 (681) b2 



