10 
C. F. H. Jenkins. 
Aonidiella perniciosus (Comst.) (San Jose Scale) 
Tlie above pest was first recorded in Western Australia in 1897 (Despeissis 
1897 and Fuller 1897). Its presence was so much dreaded that very stringent 
■control measures were at once adopted and infested trees were grubbed and 
burned. 
Attempts at ])arasite establishment have been made, two introductions 
from Pennsylvania being reported (Newman 1915). Unfortunately no living 
material reached tins State and the species concenied is not mentioned. Two 
-attempts to introduce hymenoptera from California in 1907 also failed. An 
unnamed ladybird forwarded by C^ompere from Spain was liberated (Anon. 
1903), but with no better results than the otlier attenij^ts listed. 
LITERATUliE. 
Anon, 1903, “ In Search of Parasites,” Journ. Dept. Agric. IK. Aust. Vol. VII., p. 432. 
Despeissis, A. 1897, Journ, Bur. Agric. IK. Aust. Vol. IV., p. 1290. 
Fuller, C. 1897, Ibid. Vol. p. 1293. 
Newman, L. J. 1909, “ Beneficial Parasites,” Journ. Dept. Agric. W. Aust. A^ol. XA’III., 
p. 380. 
NeAvman, L. J. 1915, Ann. Kept. Dept. Agric. AAK Anst. 1914-15, (unpublished). 
Aspidiotus sp. 
Compere in 1902 introduced a coccinellid Chiloconis circumdatus Shon. 
from Hong Kong. Releases were made in the metropolitan area but without 
success. In 1903 a batch of 350 coccinellids imported from Seville were also 
libei'ated in tlie Perth area, but were not known to become established. 
Coccus hesperidum L. (Soft Brown Scale). 
Ihis scale first appeared in local literature in 1894 (Anon. 1894) although 
the actual date of its introduction into AVestem Australia is not known. 
Althougli not a major pest, it has a wide host range and causes orehardists 
some inconvenience. Attempts to control this scale biologically have not been 
successful, but the introductions attempted are itemised in Table IV. 
TABLE IV. 
Parasite or Predator. 
Scutellista sp. 
Bo. 
CoccopJtaqus lycimnia 
Walk. 
Unnamed parasites 
(? hymenoptera) 
Do. do. 
Do. <lo. 
Do. do. 
Do. do. 
Do. do. 
Scutellista. sp 
? 
Scutellista and others 
Introduced 
From. 
Date of 
Intro- 
duction. 
Number 
Intro- 
duced. 
Number 
Liber- 
ated. 
Where 
Liberated. 
Intro- 
duced 
By. 
Subse- 
quent 
History. 
Philippine Is- 
lands 
1907 
9 
? 
Compere 
Failed 
Colombo .... 
1907 
? 
16 
9 
do. 
do. 
California .... 
1907 
9 
1500 
9 
do. 
do. 
do 
N.S.W. and 
1907 
? 
9 
do. 
Failed to 
breed out 
1902 
83 
9 
Metropolitan 
do. 
Failed 
Queensland 
Area 
China 
1905 
81 
9 
9 
do. 
Algiers 
1906 
do. 
All died 
China 
1905 
do. 
Ceylon 
1907 
16 
Metropolitan 
do. 
9 
Ceylon 
1908 
Area 
do. 
do. 
9 
Italy and Egypt 
1908 
9 
China aiul India 
1909 
Compere 
? 
