CONTRIBUTION TO THE KNOWLEDGE OF MEALY 
BUGS, GENUS PSEUDOCOCCUS, IN THE VICINITY 
OF CAPE TOWN, SOUTH AFRICA. 
By Cuas. K. Brain, F. E. S. 
The material studied was mainly collected by the writer 
during 1910 and the first part of 1911. Two of the species, how- 
ever, were collected by Mr. Chas. P. Lounsbury, as mentioned 
in the descriptions. Sixteen different host plants are involved, 
but Pseudococcus capensis was found on eleven of these, while 
particular attention was not paid to hosts for P. longispinus, 
which was found exclusively in greenhouses. It should be 
mentioned that the specimens were collected as noticed while 
engaged on other entomological work connected with the 
Department of Agriculture, and it is by no means implied that 
the seven species mentioned in this paper include all that are 
present in the Cape Peninsula. 
To insure more accurate measurement of the segments of 
the antennae, and the setae of the anal lobes and anal ring, all 
specimens were stained by the Carbol Fuchsin method described 
in a separate section of this article. The photographs and draw- 
ings were prepared by the writer hoping that they would facilitate 
the determination of the species. At this first opportunity I 
wish to express my gratitude to Mr. Chas. P. Lounsbury, 
Chief of the Division of Entomology for the Union of South 
Africa, for much assistance in Entomological work, and also 
to Prof. Herbert Osborn, of Ohio State University, for his 
timely criticism and advice. 
Pseudococcus longispinus Targ. 1867. 
Dactylopius longispinus Targioni. Studi sulle Cocciniglie 1867. 
Dactylopius adonidum Signoret. Essai sur les Cochenilles. Ann. Ent. Soc, 
Fr. 1875. 
Dactylopius longifilis Comstock. Ann. Rep. Comm. Agric. 1880. Washington 
1881. 
This well known insect (Fig. 1) can be readily recognized by its 
’ caudal appendages, but the following particulars are added to make the 
series uniform and to assist in the determination of slide material. 
Adult 9. Largest specimen found measured while alive 4.1 mm., 
and had caudal appendages 5.5 mm. long. 
Antenne: Measurements in u. 
177 
