File:Annual report (1910) (14756814386).jpg

Identifier: annualreport6421910newy (find matches)
Title: Annual report
Year: 1902 (1900s)
Authors: New York State Museum
Subjects: New York State Museum Science Science
Publisher: Albany : University of the State of New York
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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Mt Vernon andvicinity, though reports of injuries were received from Newburghand Batavia. Personal observation showed that this pest was some-what abundant on trees at Newburgh and, to a less extent, atHopewell Junction. This species is easily distinguished from the older and betterknown cottony maple scale1 by the fact that it occurs in conspicuousfelted masses upon the trunks of infested trees and also formslarge, cottony aggregations on the foliage (fig. 6), two situationswhere the cottony maple scale is never found with its contrastingwhite covering. 1 P u 1 v i n a r i a vitis Linn. 56 NEW YORK STATE MUSEUM The full-grown females of the false maple scale may be foundon maple leaves in summer and are then about one-quarter of aninch in length and with a slightly less transverse diameter. Theparent insects are concealed by an oval mass of powdery, slightlystringy wax within which is the female and her eggs (frequently500 in number), the former occupying the anterior portion and her
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Fig. 6 False cottony maple scale. a=adult females on leaf;fr=young females and males on bark. Natural size. (After Howard.Insect^Life. 1894. 7:235) body constituting about one-quarter the bulk of the mass. Theyoung remain on the leaf after emerging from the eggs, unless itis too crowded, in which event they crawl down the petiole andseek nourishment on healthy foliage. The males, on attaining fullgrowth, become restless and wander over the trunk and limbs forfrom seven to ten days, finally secreting themselves beneath or REPORT OF THE STATE ENTOMOLOGIST I9IO 57 upon the rougher outer bark, form the conspicuous felted massesfrequently seen, and therein transform to pupae. There are prob-ably three generations in this latitude, the winter being passed bythe young in crevices of the larger limbs. Observations at Pough-keepsie last fall showed that crawling young were very numerousOctober 4th. Affected trees drop their foliage earlier in the fallwhile that of others is still green and at

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