25 



PART OP PLANT ATTACKED. 

 The leaves. 



REMARKS. 



Not very common, but has been collected in widely separate 

 localities. There was quite a heavy infestation on the Guava trees 

 at Geziret Debsha (Markaz El 'Aiyat) in 1920. 



30. Aspidiotus cydonise Comst. = lataniae Sign. 



BIBLIOGRAPHY : Green, Cocc. of Ceylon, Part i, p. 62. 



Specimens of this species vary considerably in size, colour, and 

 general appearance. The puparium of the adult female is very 

 strongly convex, circular to ovate, highest convexity in the cephalic 

 area ; colour varying from white to grey or grey brown. The pellicles 

 are brown, yellowish brown, to straw-coloured, and are situated 

 centrally in the early stages and later nearer the anterior extremity. 

 In some specimens the pellicles are much more apparent than others, 

 due partly to the absence of the white secretionary covering: this 

 refers in particular to specimens on Guava in which the pellicles are 

 sometimes quite a dark brown the remainder of the scale being grey. 

 The adult female is bright yellow. 



Diameter 1-1-5 millimetres. 



HOST PLANTS. 



Anonaceae Anona sqvainosa (Sweet Sop). 



Apocynaceae Nerium oleander. 



Euphorbiaceae Phyllanthus sp. 



Graminese ... Saccharumsp. (Sugar Cane). 



Leguminosae Acacia arabica (Sunt), A. decurrens (Wattle), 



Bauhinia sp., Ccesalpinia sepiaria, Cera- 



tonia siliqua, Dalbergia sissoo, Dolichos 



lablab. 



Moraceae Ficusspp., Morus sp. 



Myrtacese Psidium guajava (Guava). 



Oieaceae Jasminum humUe. 



Rharanaceae Zizyphus sp. 



Rosaceae *Eriobotrya japonica (Loquat), *Prunus do- 



mcstica (Plum), *Pyrus cydonia (Quince), 



*Rosa sp. (Rose). 

 Viteceae Vitis vinifera (Vine). 



PART OP PLANT ATTACKED. 



Leaves, petioles, and stems. Old stems are often found com- 

 pletely covered with this scale. 



