-410-- • "" 
foliage had occurred. -A number of ' ■batches of-' eggs were found "but none 
appeared to he parasitized, A number - of •"moca," Andira inermis , H.B.K., 
trees were ;; al so 'rather badly stripped by the beetles in the same locaJity. 
The green scale, Coccus viridis Green, was observed lightly infesting 
a number 'Of young grapefruit trees at the Substation at Isabela on June 1. 
(G,N.W; :j and/M.i)4Li). "• 
'Owing : -to heavy itoins, growth of windbreaks, and spraying with oil 
sprays, infestations of the green -scale- have almost -disappeared from <• 
plantings "of grape-fruit in at least four groves inspected in the vicinity 
of Isabela. (G.N.f.) 
•The leaf -beetle Diabrotica graminea Baly was numerous on a small patch 
of mung heansy about l/8 acre, at the Station grounds at Rio Piedras on 
June 8« -The beetles were doing considerable damage to the blossoms and 
also some leaf feeding. 
The moths of the smaller beet webworm, Zinckenia fascial is Craner, 
were not uncommon: at the lights of the Sugar Company's hotel at Aguirre on 
the nights of June 28 and 29. The larvae are rather common, beet and 
Amaranthus feeders on 'the Island^ 
A heavy infestation of C o ry thucha go s syp i i Fab, in chc field of lima 
beans near Aguadilla has caused appreciable reduction in both quantity and 
quality of crop, (G.N.W.) 
•■••■■ <■'■'..■ . ■ . 
, . .„ The, fall armyworm, Laphygma frugiperda S.& A., was reported by Dr. 
Wolcott' as causing considerable damage during the latter part of the month 
to the alfalfa at the Isabela Substation. The outbreak,- however, was 
quickly checked, he reports, by cutting the alfalfa and allowing the im- 
ported toads, Bufo marinus L., which a.re numerous, to eat the caterpillars. 
This insect was reported (through G.N. Wolcott)- by T.B. McClelland, Director 
o£ the Federal Experiment Station, as causing an outbreak on grass at, 
Mayaguez. 
The leaf -tier Dichomerj.s piperatus Wlsm. seemed to be doing. about the 
same amount of .damage when examined on June 1 in the experimental plots at 
the Isabela Substation as during the previous month. Dr. .G.N. Wolcott 
■reports that it continued to be injurious during the month. 
- The canna leaf-tier, Calpodes ethlius CrtiCC-r, was observed to be 
moderately infesting a number of plants bordering a large entrance drive- • 
way near the Substation at Isabela on June 1 (M.D.L., G.N.I. , J.G.M.). 
The gramma Psara, Pjsara phaeopteralis Guehee, was abundant, both n *« 
moths and* larvae, on June 28 and 29 on -the SU' Augustine, grass,' (l.ocallyvr. "; 
called ■gramma grass)- covering the fairways 'on the 9^hole golf course of ; v i 
the Sugar Company at Aguirre. Dr. Wolcott reports an outbreak, on .S't. . ■ • ol 
Augustine grass during the latter part of the month about 3 miles south- 
west of Isabela. The. ,only. other previous, record of injury in. the Island, 
from Hat ill o'-, in 1921, where the larvae' were abundant in a pasture , was 
according to Dr. Wolcott fully as serious. 
