-235- 
I~S2C? C0SDI7I0I/S DT PCSTO EI GO DUSI^G ASfflll, 1931. 
M. D. Leonard 
Insular Experiment Station, Hio Piedras, Porto Rico. 
About 10 per cent, by actual count, "of the canes ^ere infested 
on several varieties in experirrental plots by the sugarcane moth borer 
(Diatraea sacchar alig Fab. ) at the Central Igraldad near Sfeyagucz on 
April ~2i-33. (M.D.L. and P. Sein.Jr.) 
Moths of the sugarcane root-caterpillar (? erf oradix sacchari Sein) , 
wore common April 21-23 at Mayaguez ^hcrc thoy were observed diving, 
after short flights, into tho cut trash on the ground, the cane having 
been only just cut. (M.D.L. and P.S. ) 
The West Indian cane weevii ( Metamasius hemipterus L. ) is fairly 
corrrron April 13-15 at Guy air a and there is a very light infestation at 
Mayaguez April 21-23 in large cane variety experimental plots in which 
re are making detailed Diatraea counts. This insect is reported as 
abundant and generally distributed 'in' banana plants on about 100 farms 
in which Mr. Jesus Gomez, Agricultural Agent of Huiracao, ^as surveying 
during the month at Guy anil la for Co smopolites sordidus Germ. (M.D.L. 
and P.S. ) 
The pink leaf sheath bug ( Lasiochilus divisus Champion) i-as fairly 
common in all stages, in a large experimental plot comprising 5 varieties 
of sugarcane at the Central Ignaldad at Mayaguez April 21-23. (M.D.L. 
and P.S.) 
The yellow cane aphid -(Sipha flava Forbes) was reported on April 24 
by the manager of a large central at Cabo Rojo to be much less serious 
than last month on sugarcane o^ing to rains during April but he stated 
that there was still some infestation. 
The cane mealybug ( Pseudo coccus sacchari Ckll. ).'.was fairly common 
on sugarcane at Guyama, April 13-15 and less common at Mayaguez April 21- 
23 in several large cane variety experirrental plots in r -hich we were 
making detailed Diatraea counts. (M.D.L. and P.S.) 
A light infestation of the sugarcane scale ( Aspidiotus sacchari Ckll. ) 
at Mayaguez April 21-23 and fairly common at Guyama, Aeril 13-15 in large 
experimental plots of. several varieties of sugarcane in which — e "ere 
making detailed borer counts. (M.D.L. and P.S. ) 
Jesus Gomez reported observing a for coffee trees infested with the 
beetle borer ( Apate fran c i sea Fab. ) at Guy an ill a- during an inspection 
trip there in April. 
A light infestation of the green scale ( Coccus viridis Green) was 
reported on leaves and stems of a number .of young coffee trees in a 
variety breeding plot at the Station at Rio Piedras. The iloffaa arab i ca 
and C. liberic a, plants seemed to be more infested than the others; rT0 -g 
