Monotrysia
The Monotrysia are a group of insects in the lepidopteran order, which are not currently considered to be a natural group or clade. The group consists only of moths and most of these are small and are relatively understudied in many regions of the world. The group is so named because the female has a single genital opening for mating and laying eggs, in contrast to the rest of the Lepidoptera, which have two female reproductive openings. They comprise all of the group Heteroneura but the Ditrysia.
