Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca

Figure 1

(a) Colonies of Thoracaphis kashifolia on leaves of Quercus glauca (Tama, Tokyo; 14 October 2015); (b) a woolly colony of T. kashifolia (Tama, Tokyo; 14 October 2015); (c) two apterous adults and one nymph to be aptera (upper right) of T. kashifolia (Tama, Tokyo; 8 February 2016); (d) defensive nymphs of T. kashifolia clinging to an experimentally introduced lepidopteran larva (Tama, Tokyo; 1 October 2015).

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