A LIST OF THE COCCIDAE OF PORTO RICO. 



By Thomas H. Jones, 



Formerly Entomologist of the Experiment Station of the Board of Commissioners 



of Agriculture of Porto Kico. 



From time to time various entomological workers have published 

 references to the Coccidae of Porto Rico, but the list of twenty - 

 three species collected on the island in 1899 by Mr. August Busck 

 is, so far as known to the writer, the only attempt ever made to 

 enumerate the Porto Rican scale-insects. This list appeared in 1900 

 in Bulletin No. 22, new series, of the Division of Entomology, United 

 States Department of Agriculture, the determinations having been 

 made by IMessrs. T. Pergande, T. D. A. Cockerell, and C. L. Marlatt. 

 In connection with this list it is stated that only one coccid, Aspi- 

 diotus destructor, had been previously recorded from Porto Rico, 

 this being in a reference in the Canadian Entomologist for 1895, 

 the material having been taken by Mr. J. D. Hall in the city of 

 San Juan. 



Some of the Coccidae of the island, especially those attacking 

 citrus trees, are referred to somewhat fully in the publications of 

 the Porto Rico Agricultural Experiment Station. In these articles 

 jMessrs 0. W. Barrett and W. V. Tower have treated the greatest 

 number of species and given the most extended economic accounts. 



^luch attention has been given to the parasitic fungi attack- 

 ing the scale-insects of citrus trees by the workers of tlie Porto 

 Rico Insular Experiment Station. They have recommended the 

 planting of windbreaks in orchard areas to furnish suitable condi- 

 tions for the development of these fungi, which under favorable cir- 

 cumstances become very efficient enemies of the scale-insects. Mr. 

 J. R. Johnston published in 1915 a bulletin on the entomogenous 

 fungi of the island, and in it made several references to those at- 

 tacking Coccidae. The insect parasites and predators of Porto Rican 

 scale-insects have, on the other hand, received but little attention. 

 IMessrs. 0. W. Barrett, F. S. Earle, and D. L. Van Dine mention 

 parasites of Lepidosaplies heckii, Saissetia hemispliaerica, and Aspi- 

 diotiis sacchari, respectively, but do not give their scientitic names. 

 Apparently the only insect enemies of the scale-insects specifically 

 recorded from Porto Rico are Aspidiotiphagiis ciirinus and Cocci- 



