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&ng and that they had practically destroyed a large section of cypress 
flooring, 
WEBBING CLOTHES MOTH (Tinepla oisselliella Hum.) 
Louisiana. W, E. Hinds (May 29): The moths occur in an outbreak of unusual 
abundance in a public building at Baton Rouge in which a large amount of 
hair felting was used. The building was completed one year ago, and it is 
apparent that the material was infested at the factory or warehouse be- 
fore the felting was installed. 
INSECT CONDITIONS IN PUERTO RICO 
DURING SPRING OE 1933 
Insular Experiment Station 
and 
San Juan Plant Quarantine Office 
COCCIDAE 
The citrus mealybug, Pseudococcus citri Risso, was exceptionally abundant 
during the first half of June in citrus groves in the Bayamon district despite 
reasonably rainy weather. (G. N. Wolcott.) 
Some months ago Pseudococcus nipae Mask, was noted so abundant on one avocad 
tree in «Rio Piedras, covering all the twigs and much of the larger branches, as 
to cause its complete defoliation; but the insects shortly afterward disappeared 
and the tree now appears normal. At about the same time the mealybug was very 
abundant on guava bushes and still continues to be rather common. I am of the 
opinion that this may be one of the delayed results of the hurricane, destroying 
the introduced ladybeetle Cryptolaemus montrouzieri Muls., none of which has 
been seen since. (G.N.W.) 
The cottony cushion scale, leery a pure ha si Mask,, has spread a few miles 
farther to the southwest, being reported in the Bayamon district on the Comerio 
Road, and in the Espinosa district, between Dorado and Vega Alta. The lady- 
beetles have practically cleaned up most large infestations in San Juan, Santurce 
the Bayamon district, and Dorado, and have been found in the new infestations of 
the scale, having reached these by their own efforts. About 2,500 beetles were 
distributed this spring and have done good work except in small infestations 
and in exceptionally wind-swept locations. .(G.N.W.) 
ALEYRODIDAE 
The woolly white fly of citrus, Aleurothrixus howardi Quaint., is ordinarily 
so scarce in Puerto Rico that infested leaves are curiosities, and never have 
I found more than one at a time. In a citrus grove between Bayamon and Toa Baja, 
observed rather carefully recently, a dozen or more infested leaves per tree were 
noted on several trees. The owner reports having had his majordomos from this 
and other nearby groves bring him other similar leaves, indicating a rather un- 
usual abundance of this insect. As it is usually kept so completely in control 
by parasites, its unusual abundance at present may be a belated effect of the 
hurricaneiaf San Ciprian only now becoming apparent. (G.N.W.) 
