

THE COCCIDAE OF SOUTH AFRICA. III. 225 



backward into the pygidiura, where it terminates in a + crenulate arc. Only 

 one pair of lobes present. These often appear worn in mounted specimens, the 

 two extreme types being illustrated (figs. 147, 147a). Antennae each consisting 

 of a low tubercle and two curved spines of moderate length. Leonardi states that 

 there is one short seta, but this condition is often observed in broken specimens. 

 The plates are very unusual and characteristic, being broadly rounded at their 

 extremities and supplied with spiny or finger- like projections, making them spur- 

 like. Parastigmatic glands present; anterior spiracles with 10-12, posterior 

 with 4—6. Circumgenital glands present, very numerous, in 5 groups : — 



28—60 

 22—32 22—32 

 28—40 28—40 



Habitat : On Acacia horrida, Willd., Pretoria ; collected by the writer, 17th October 

 1914. On Acacia horrida, Willd., Grahamstown and Bathurst, C.P., and on 

 willows, Pretoria and Johannesburg ; collected by C. P. Lounsbury. On willow, 

 Boksburg ; collected by C. Fuller, 18th August 1914. 



Collection Nos. : 154, 154a, 207, 207a. 



128. Diaspis rhusae, sp. n. (Plate xv, fig. 146). 



Scale of adult $ about 2 mm. in diameter, normally circular, sometimes elongate 

 owing to position near midrib of leaf ; very convex, birt rounded at top ; margins 

 flat, sometimes slightly turned up ; colour sordid white to buff, opaque, with the 

 median area slightly brownish. In some specimens the sides are corrugated and give 

 the scale a shell-like appearance. Exuviae central or nearly so, yellow ; second 

 exuviae covered. 



Puparia of <J<J collected together on the leaves and partly obscured by numerous 

 silky hairs ; somewhat elongate, non-carinate, with yellow exuviae. 



Adult $ viviparous, mounted specimens containing well-developed larvae. Body 

 pear- shaped, thin, hyaline, evenly rounded in front. Abdominal segments not 

 produced, posterior two with glands, plates and a few hairs. Antennal tubercle 

 small, with two short curved spines. Pygidium with 3 distinct pairs of lobes ; L x large, 

 wide apart, with the inner edges serrate, vertical at first, then widely divergent (fig. 

 146) ; L 2 and L ;! with large inner lobule and minute outer one, both with entire margins 

 and striate. P generally simple, occasionally forked or fully branched at the tip. 

 Four or five oblique dorsal gland openings on each side, near the margin. 

 Parastigmatic glands present, 2 or 3 at the anterior spiracles only. Circumgenital 

 glands 0. 



Habitat : On native bush {Rhus sp.) associated with Aoividia rhusae, sp. n., 

 Rondebosch, C. P. ; collected by C. P. Lounsbury, 15th June 1915 



Collection No. : 161. 



129. Diaspis (Aulacaspis) fulleri, Ckll. (Plate xv, fig. 144). 

 Diaspis crawii var. fulleri, Ckll., The Entom., xxxiv, p. 225, 190J. 

 Aulacaspis crawii fulleri, Fernald, Catalogue, p. 233, 1903. 



Scale of adult $ about 2 to 2 '4 mm. in diameter, nearly circular or somewhat 

 elongate, flat, white, smooth, with dark brown exuviae. The exuviae are often 

 (C507) d 



