Fig. 5   Apterae on Achillea; (a) Front of head of Coloradoa achilleae, (b) Dorsal body hairs of Coloradoa santolinae, (c) Front of head of Pleotrichophorus patonkus, (d) SIPH of Microsiphum millefolii, (e) Cauda of Microsiphum millefolii, (f) Cauda of Metopeurum fuscoviride, (g) Scleroites of Macrosiphoniella millefolii, (h) SIPH of Macrosiphoniella sejuncta, (i)  SIPH of Macrosiphoniella tapuskae, (j) Abdomen of Aphis vandergooti showing MTu, SIPH and cauda, (k) SIPH of Aphis oligommata.