126 CHAS. K. BRAIN. 



Scale of adult $ to 2 mm. in diameter, yellowish or buff-grey, but often obscured 

 by fragments of bark. The yellow exuviae are covered and exhibit the greyish 

 ring and dot of the young stages. 



Male puparium smaller, narrower and darker in colour. 



The nearest South African species is A. pectinatus , so far as the scale itself is 

 concerned, but in this latter the ochraceous or blue-grey colour is pronounced, the 

 exuviae show through the secretionary layer as a red-brown pellicle, and the $ scale 

 is usually more conical. 



Adult $ (mounted) about 1*2 mm. long, broad pear-shaped, but often with the 

 abdominal segments somewhat retracted, hyaline, except the mouth-parts and median 

 area of the pygidial margin, which are yellow. Antennal tubercle slightly shorter 

 and broader than in pectinatus. Pygidium (fig. 97) pointed, with two pairs of lobes. 

 Lj about as long as broad, rounded at apex, notched on the outer margin as in 

 pectinatus. L 2 smaller, usually rounded at apex and notched near the middle of the 

 outer margin. P short, slightly branched. Circumgenital glands 0. Formula : 

 Pp Li> 2P 2 , L.,, 3P 3 ,.L 3 , 3P 4 , — , S. 



It is practically impossible to state with any degree of certainty when this species 

 was introduced into the Union. From its distribution at the time of discovery here 

 it seems to me quite possible that there were two separate introductions, the one 

 into Natal and the other to the Transvaal, possibly from Australia about 1906. 



Habitat : It has been found on apple, almond, apricot, ash, chestnut, elm, hawthorn, 

 loquat, oak, peach, pear, plum, poplar, quince, rose, pepper, walnut, and willow, 

 and has been found at about a dozen places in the Transvaal, about an equal number 

 in Natal, and three in the Orange Free State. It is not yet reported from the Cape 

 Province. 



Collection No. : 197. 



80. Aspidiotus (Diaspidiotus) pectinatus, Lindinger (Plate vi, fig. 94). 



Aspidiotus (Diaspidiotus) ajricanus, Marlatt (ex parte), Bull. U.S. Bur. Ent., T.S. 16, 

 p. 15, 1908. 



Aspidiotus pectinatus, Lindinger, Jahrb. Hamb. Wiss. Anst. xxvi, p. 43, 1909. 



Common Name in South Africa : Grey Scale'. 



Scale of young circular, dark greyish, with a distinct white ring and dot. Scale 

 of adult § about 1'5 mm. in diameter, moderately convex to flattish, dark greenish 

 grey, olivaceous, or bluish grey in colour, with the yellowish brown to reddish brown 

 exuviae covered. The exuviae usually show distinctly through the thin secretionary 

 layer and are surmounted by the conspicuous white ring and dot as observed in the 

 young scales. 



On oleander the scales often contain an admixture of powdery material from 

 the bark of the plant and are light in colour, but the greenish colour is generally 

 apparent on the under-side of the scale. The white caps which are so conspicuous 

 in ajricanus are never found in this species. Male puparia narrow, with exuviae 

 near the anterior rounded margins ; colour as in the $ scale. 

 $ viviparous. 



