- 34 



HOST PLANTS. 



Coniferse Cupressus sp. (Cypress), Thuja sp. 



REMAKKS. 



This species is fairly common and occurs in both Lower and 

 Upper Egypt. It is found on the fruits as well as the leaves. 



41. Diaspis cinnamon! var. mangiferse Newst. 



BIBLIOGRAPHY: Newstead, Bull. Ent. Res. 1911-1912, p. 86. 



Female puparium circular, whitish, rather like frosted glass in 

 appearance, semi-transparent and translucent. Pellicles slightly ec- 

 centric but within the margin, pale yellow to colourless with usually 

 a darkened median portion. 



Male puparia white and strongly tricarinate, very prolific. 



Diameter of female puparium 2 millimetres. 



HOST PLANTS. 



Anacardiaceae Mangifera indica (Mango). 



PART OF PLANT ATTACKED. 

 Leaves. 



REMARKS. 



This variety of D. cinnamoni was described by Newstead (loc. 

 cit.) from material sent by Mr. Willcocks from Giza, Cairo, in 1910, 

 on small Mango trees imported from Ceylon. It has since been 

 collected at Helwan on mangoes but has not been found elsewhere. 



42. Diaspis cacti Comst. 



BIBLIOGRAPHY : Comstock, Rep, Agr. Exp. Stn. Ithaca. N.Y. 1916. 

 Female puparium circular, convex, white to sandy colour. The 

 predominating colour of specimens from this country is a very pale 

 grey brown sandy colour. Pellicles, central or eccentric but always 

 within the margin, dark brown. Secretionary covering thin, the same 

 colour as the rest of the puparium. In some specimens this secretionary 

 covering is very much thinner than in others, making the pellicles 

 appear much darker and giving a greater contrast. Microscopic 

 preparations of dark and light pellicle specimens show no difference, 

 with the exception of the parastigmatic glands which are fewer in 

 the former 2-5 as compared with 5-1 1 in the latter. The circumgenital 

 glands of the former tend to be fewer than in the latter, but this is 

 not a constant feature. 



