Yarrow
Guides
Oidaematophorus mathewianus
Yarrow Leaf Plume Moth, Mathew's Plume Moth
A small plume moth (Pterophoridae) with a wingspan of 21–26 mm. Adults are pale brownish-grey with distinctive split wings characteristic of the family. Larvae feed exclusively on yarrow (Achillea millefolium). The species exhibits seasonal dimorphism in pupal coloration.
Ozirhincus millefolii
A gall midge in the family Cecidomyiidae. The species name 'millefolii' indicates association with Achillea millefolium (yarrow), a common host plant for this genus. Larvae develop within flower heads, inducing galls. Adults are small, delicate flies typical of the family.