The Argyresthia eugeniella (guava moth) is a moth found in Florida, as well as Australia. The moth was blown to New Zealand on favourable winds in the 1990s and is now found at least nine types of fruit. The wingspan is 7–8 mm. The forewings are dark golden brown with a violet sheen and with darker brown transverse reticulation. The hindwings are light silvery fuscous. Females penetrate guavas and lay their eggs inside the plant. In its larval form it tunnels through the guavas, damaging them.