THE COCCIDAE OP SOUTH AFRICA. — in. 223 



Habitat : On pineapple, Natal, and Newlands, C.P. ; collected by C. Fuller and 

 €. P. Lounsbury, 1898. Occasionally found in greenhouses at Kingwilliamstown 

 and Pretoria. 



Collection No. : 153. 



125. Diaspis boisduvali, Sign. 



Diaspis boisduvalii, Sign., Ann. Soc. Ent. France, (4) ix, p. 432, 1869. 



Aulacaspis boisduvalii, Ckll., Gard. Chron. (3) xiii, p. 548, 1893. 



Diaspis boisduvalii, Newst., Mon. Brit. Coca, i, p. 153, 1901. 



Diaspis boisduvali, Lndgr., Die Schildlause, p. 75, 1912. 



Scale of adult $ l"3-2'2. mm. in diameter, circular or broad egg-shaped, flatly 

 convex, thin, transparent, greenish yellow. Exuviae central or nearly so, usually 

 pale yellow, but more seldom brownish yellow. 



The body of the adult $ is broad egg-shaped, with narrowed pygidium, pale 

 yellow. The anterior margin in mounted specimens is flatly rounded, with a broadly 

 rounded, prominent tubercle on each side of the thoracic segment. This character 

 alone forms a ready means of distinguishing this species from D. bromeliae, which 

 is otherwise very similar. The pygidium is similar to that of D. bromeliae, but 

 the lobes are slightly stronger, the dorsal glands are small and fewer in number, 

 and the gland openings are shorter. The circumgenital glands are in 5 groups : — 



4—12 



11—25 11—25 



7—20 7—20 



Habitat : On Maranta, Durban ; collected by A. Kelly. On palm. Pretoria, 

 and on orchid, Pietermaritzburg. 



Collection Nos. : 153a-153c. 



126. Diaspis echinocacti (Bouche) (Plate xv, fig. 142). 

 Aspidiolus echinocacti, Bouche, Schadl. Gart. Ins. p. 53, 1833. 



Diaspis ealyptroides, Costa, Faim. Red. Nap. Coca, p. 201, 835 ; Sign., Ann. Soc. 

 Ent. France, (4) ix, pp. 99, 434, 1869 ; Newst., Mon. Brit, Coccidae, i, p. 159, 

 1901. 



Scale of adult $ about 2 '5 mm. in diameter, almost circular, convex, opaque 

 white when young, or sometimes slightly translucent and appearing yellowish or 

 greenish, with + subcentral exuviae, which vary from yellowish brown to blackish 

 brown. Old $ scales buff in colour, with white margin and dark brown 

 exuviae. 



Puparium of (J about 1"5 mm. long, narrow, yellow-buff with pale yellow-brown 

 exuviae. The secreted portion is semi-translucent, with a distinct median keel. 



Living $ yellow. Body of adult $, when mounted, broad pear-shaped, regularly 

 rounded in front, thin, transparent and hyaline, with the mouth-parts, spiracles 

 and pygidium slightly yellow. Abdominal segments not strongly produced, the 

 posterior two rounded, and supplied with glands and a few hairs and plates. 



