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Fig.57 Apterae on Vernonia; (a) Cauda of Protaphis evansi (type), (b) SIPH of Sitobion congolense (type), (c) SIPH of S. nigeriense (type), (d) SIPH of Aphis vernoniae.
Fig.57 Apterae on Vernonia; (a) Cauda of Protaphis evansi (type), (b) SIPH of Sitobion congolense (type), (c) SIPH of S. nigeriense (type), (d) SIPH of Aphis vernoniae.