The black fly of citrus and other subtropical plants . Fig. 7.—Diagrammatic drawings of the molting of Aleurocanthus woglumi: Third molt. spot often becomes a lighter green and the whitish margin becomesvery pronounced from one to four hours preceding the actual moltingof the individual. Careful study of this has been made and appearsto be due to the distention of the insect which permits the individualbeneath to show through. Of the individuals with which the writers worked, 38 out of 306, oralmost per cent, died. FOURTH INSTAR OR PUPA. The third molt takes place very rapidly, the entire
The black fly of citrus and other subtropical plants . Fig. 7.—Diagrammatic drawings of the molting of Aleurocanthus woglumi: Third molt. spot often becomes a lighter green and the whitish margin becomesvery pronounced from one to four hours preceding the actual moltingof the individual. Careful study of this has been made and appearsto be due to the distention of the insect which permits the individualbeneath to show through. Of the individuals with which the writers worked, 38 out of 306, oralmost per cent, died. FOURTH INSTAR OR PUPA. The third molt takes place very rapidly, the entire process beingcompleted in 15 minutes. (See fig. 7.) The individuals are palecream-colored, fiat, and the marginal teeth are not visible immediately THE BLACK FLY OF CITRUS. 35 after molting, but are pushed forth within the first 10 individuals are flat at first and at the end of 15 minutes theybecome distended, with the numerous spines standing out con-spicuously. The time for complete coloration, i. e., until the shinyblack color so c
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Keywords: ., bookcentury1900, bookdecade1920, bookidblackflyofci, bookyear1920
