Native mayflies

Neonicotinoids are toxic to two native mayflies – Deleatidium spp. and Coloburiscus humeralis. They are also toxic to Deleatidium nymphs.

Deleatidium magnum adult (left) and nymph, Emily Roberts, CC BY-4.0. Coloburiscus humeralis adult, David Paulin, CC BY-NC 4.0. All images sourced from iNaturalistNZ.