. Injurious insects : how to recognize and control them . Insect pests; Insect pests. PLAXT LICE IXJl'SIXG THE FOLIAGE 109 and known there as the " green peaeh ; The hee migrate in early summer to various trucl: crops, especially spinach, cab- bage, lettuce, and celery. They are hght green or yellowish in color, with darker markings on the abdomen. The head, antenna', and honey tubes are black. This species is never covered with white powdery secretion, like the cabbage aphis. It is controlled liy spraying with a contact insecticide, preferalily tolxicco extract or 5 per cent
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. PLAXT LICE IXJl'SIXG THE FOLIAGE 109 and known there as the " green peaeh ; The hee migrate in early summer to various trucl: crops, especially spinach, cab- bage, lettuce, and celery. They are hght green or yellowish in color, with darker markings on the abdomen. The head, antenna', and honey tubes are black. This species is never covered with white powdery secretion, like the cabbage aphis. It is controlled liy spraying with a contact insecticide, preferalily tolxicco extract or 5 per cent kerosene enuilsion. In greenhouses this species is found throughout the year, and is a troublesome pest. The Melon Aphis, or Cotton Aphis {Aphis gossiipii CAov.) ^Melons, cucumbers, cotton, strawberries, and many other plants are subject to infestation by tliis species of plant louse. It usually is seen in the wingless form, and works for the most part on the under surface of the leaf, which is badl>' curled by its attack. Tender growing shoots are a favorite feecUng place. The wingless louse is dark green, varying to yellow. Its legs are light yellow, and its honey tubes are lilack, long, and tapering. Its length is one fifteenth of an inch. The young stages are similar, but are smaller and wingless. ^A'inged individuals are de- veloped whenev'cr the lice are compelled, through lack of food or removal of a crop, to seek new feeding ground. Consequently attack may come on suddenly and unexpectedly. The fuU life round is not known, and probably the species passes one. Fic. 24s. -Work of the Mrlon Aphis. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
Size: 1357px × 1840px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
