Aphid Pests of Maine, Vol. 2: Willow Family (Classic Reprint) - Softcover

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Excerpt from Aphid Pests of Maine, Vol. 2: Willow Family

Alate viviparous female, - Spring migrant. From late July until mid-august this form can be found winged and solitary in the gall which it is now ready to desert. Fig. 20 shows the antenna of this form and Fig. 46 D. The wing. Fig. 21 is a drawing of the antenna of the pupa, the joints IV and V of which are typically rather short and bulging, and VI longer, narrower and with nearly parallel margins.

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