Dimorphic Sessile Apterae of the Aphid Neothoracaphis glaucae (Hemiptera) on the Evergreen Oak Quercus glauca

Figure 4

Nymphs of Neothoracaphis glaucae: (a) first-instar nymph to be aptera (collected on 5 November 2014); (b) nonfirst (probably third) instar nymph to be aptera (collected on 8 February 2013); (c) first-instar nymph to be alate (collected on 1 November 2013); (d) first-instar nymph produced by the alate (fixed on 1 December 2013). All aphids were collected from Quercus glauca in Shinkiba, Tokyo, Japan. Scale bars: 100 μm.

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(b)

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