Beskrivning:
A winged viviparous female destructive pea louse, or pea aphis. From The Encyclopedia of Practical Horticulture A Reference System of Commercial Horticulture; Editor in Chief GRANVILLE LOWTHER; copyright 1914 (therefore in public domain); http://books.google.com/books?id=A6oMAAAAYAAJ&pg=PA54&img=1&zoom=3&hl=en&sig=ACfU3U3sezh-RB-UlcGA8UoZCsw9L1TLHw&ci=112%2C482%2C368%2C225&edge=0

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