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The sweetpotato leaf miner ( Agromyza ipomoae Frost) was observed 
moderately infesting two small plantings of sweetpotato at Humacao 
Playa on May 10. A few sweeps of the net showed" the flies to be common 
in the plantings. (M.D.L. ) 
A leafhopper ( Empoasca sp.) was causing slight but general stippling 
of the leaves on two small plantings of sweetpotato at Humacao Playa on 
May 10; all stages of the insects were present on the undersides of the 
leaves. 
Examined on May 5, at the Isabela Substation, an experimental plant- 
ing of about one-half acre of alfalfa which was nearly ready to cut and 
found it generally infested with a leaf- tier ( Dichomoris piperatus !71sm. ), 
many of the larvae being tied together and badly eaten. Damage as a 
whole was only moderate, however. (M.D.L.) 
The bean lacebug (Corythucha gossypii Fab. ) was found to be moder- 
ately abundant on several young grapefruit trees on the Isabela Substa- 
tion ground on May 5. The yellow stippling of some of the leaves in- 
volved almost their entire surface. We did not notice any other host 
plants of this lacebug near by. Mr. Wolcott. stated that he had first 
noticed the infestation about a week earlier. This is the first record 
of the insect affecting citrus in Porto Rico. On May 8 a number of 
leaves on several ^grapefruit trees at the Insular Experiment Station 
at Rio Piedras showed characteristic yellowing, but very few of the ;■ 
lacebugs could be found on them. These trees were crowing under several 
large Anona muricata trees which were moderately infested at the time.- 
(M.D.L.) 
Considerable damage by June beetles ( Phyllop haga spp. ) to the 
foliage of iroxmg grapefruits in two demonstration plantings of about 
1 acre each was reported during early May (J.G.). 
A scale (P seudoparlator ia ostreata Ckll.) was observed as abundant 
on several good- sized papaya trees at the Isabela Substation and almost 
entirely encrusting some of the trunks and branches and several of the 
fruits. This scale was observed to be common? papaya at Ponce and 
several other localities on the south coast in September, 1930, but was 
not identified at the time. It has been specifically recorded from Porto 
Rico previously only from Mayaguez oy Van Zwaluwenburg on Solanum sea - 
forthianum and Acalypha sp, (M.D.L.) 
Caterpillars of the cotton leaf worm ( Alabam a argil la c ea Hbn. ) 
became abundant on cotton around Isabela aboi.it May 21 and most farmers 
are spraying or ducting. ITone had been noted around Aguadilla up to 
May 29. (GJ.W.) E. #. ROrke of the San Juan Ginnery Company reports 
that infestations on cotton started during May in several sections on 
the north coast, but that these were promptly checked by the use of 
insecticides. (M.D.L.) A few moths were noted at light near Aguadilla 
