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THE COCCIDAE OF SOUTH AFKICA— II.* 



By Chas. K. Brain, M.Sc, M.A., 

 Division of Entomology, Pretoria, S.A. 



(Plates III-VII). 



Contents. 



Four Gall Coccids 

 Genus Greioiacoccus . . 



„ Cissoccoccus . . 



„ Calycicoccus . . 



„ Amorphococcus 

 Subfamily Conchaspinae 

 Genus Conchaspis 

 Subfamily Diaspinae 

 Key to South African Genera 

 Genus Aspidiotus 

 Key to Sub-genera . . 

 Sub-genus Diaspidiotus 

 „ Hemiberlesea 

 „ Selenaspidus 

 „ Morganella 

 Genus Furcaspis 



PAGK 

 107 



108 

 109 

 111 

 112 

 113 

 113 

 114 

 115 

 117 

 117 

 124 

 128 

 130 

 136 

 137 



Four Gal! Coccids. 



Although a large variety of plant-galls are known in South Africa, only four have 

 so far been determined to be caused by Coccids. These are of particular interest 

 because no two of them are similar, and more remarkable still is the fact that no two 

 of the insects belong to the same genus, nor apparently to the same sub-family. 

 Under these circumstances it has been thought advisable to group them together 

 without reference to their systematic position in this paper. The characters of the 

 galls and insects may be seen from Plates hi and iv. 



The four genera are Grewiacoccus, g.n., Cissococcus, Ckll., Calycicoccus, g.n., and 

 Amorphococcus, Green. The first of these belongs undoubtedly to the Pseudo- 

 coccinae ; the last undoubtedly to the Asterolecaniinae. The remaining two, 

 Cissococcus and Calycicoccus, are so unusual that I am unable to place them in any 

 existing sub-family. I therefore propose sub-family names with the characters 

 of the type genera. Cockerell in his description of the genus Cissococcus prefaces 

 it by saying : — " belongs to the Eriococcesh. Larva typically Eriococcine with 

 rows of dorsal spines and prominent caudal tubercles." With this I cannot agree, 

 as the larva has a distinct marginal series of stout conical spines but no dorsal ones. 



* The numbers applied to species and to the figures on the Plates follow on from those 

 of Part I in Trans. Eoy. Soc. S. Africa, v, 2, pp. 65-194, 1915. 



(C478) b 



