A Monograph of the Jumping Plant-Lice, Or Psyllidæ, of the New World
A Monograph of the Jumping Plant-Lice, Or Psyllidæ, of the New World
Crawford, David Livingston, 1889-
The book A Monograph of the Jumping Plant-Lice, Or Psyllidæ, of the New World was written by author Crawford, David Livingston, 1889- Here you can read free online of A Monograph of the Jumping Plant-Lice, Or Psyllidæ, of the New World book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Monograph of the Jumping Plant-Lice, Or Psyllidæ, of the New World a good or bad book?
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— ^Length 0.77 mm. Wing pads blackish and thoracic markings begin to appear; antenns six or seven jointed. Third molt three days later. Fourth instar. — ^Full-grown nymph; length 1.4 nmi.; width 1.16; oval, flattened; general color light yeUowish brown, marked with blackish; wing pads, distal half of abdomen, head except a mesal light stripe, several bands and spots on thoracic and basal abdominal dorsum blackish or brown; a number of long, stout, spine-like setse project from margin of body. D...igitized by VjOOQIC 146 BUIXKHK 85, UKITSD 8TATB8 NATIONAL MUSEUM. After five or six days mote the adult emeigesy making the Gjde from ^gg to adult about one month. There are about four broods each year (in New York), but th^ are not sharply 8q>arated. AU stages may be found on one tree from June to September. In generti, however, the greatest numbers are present at intervals of about one month. The adults emeiging in September are usually the hibo^ nating winter forms. For further details on the life histoiy and other phases ot this species, consult Slingeriand '98: or '96, froir whidi source most of the above statements have been derived.
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