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INSFCT CONDITIONS IN COSTA RICA DURING 1932 AHD EARLY 1933 
C. H. Ballon 
San Jose, Costa Rica 
(Unless otherwise indicated, observations were made at 
San Pedro de Monte s de Oca) 
COCCIDAE 1 
Aulacaspis pentagona Targ. was seriously infesting peaches and plums during 
November, December, January, and February. 
Ceroplastes floridensis Comst. was reported from September to March as more 
or less troublesome on a wide variety of fruit, among which might be mention - 
quince, loquat, Poncirus trifoliatus , tangelo, orange, mandarin, and mango. 
C hry s omp halu s dictyospermi Mors:, was very troublesome to sweet and s< 
oranges in February 1933. During the fall of 1932 it was reported as attacking 
rose and pecan. 
Chrysomphalu s personatus Comst . was found on orange in early September at 
Liberia, Province of G-uanacaste. 
Coccus hesperidum L. was very abundant throughout the year on mango, 
avocado, and sweet orange. 
Coccus mangiferae Greene was reported on guava early in January 1933. 
Icerya montserratensis R. & H. was found on rose at Limon, and on orange at 
San Pedro de Monte s de Oca, in February 1933. 
Lepidosaphes beckii Newm. is always 'a serious pest of orange. It is also 
found on orange — jasmine ( Chalcas exotica ) , tangelo, end mandarin. 
L epidosaphes gloverii Pack, was collected on Plume ria mb :t. Pec:-: ry 36,1933. 
Pseudaonidia rrticulatus Morg. was found on orange leaf at Liberia, 
August 20. 
Pseudischnaspis bowreyi Ckll. was affecting rose at San Jose during August. 
It was also present on pecan during October, at San Pedro de Montes de Oca. 
Pseudococcus citri Risso was destructive to orange, particularly nur 
stock. It was also recorded from tangelo and mandarin. 
Pseudococcus virgatus Ckll. This meolybug was found during Novemfc rid 
December on croton ( Codiaeum variegatum ) . 
Pulvinaria psidii Mask. This species was reported thrc the fall, win- 
ter, and early spring, particularly on ylang-ylang ( Canangium odoral ■■as 
also reported from Plume ria rubra , but not abundant on the latl 
