Stigmella maoriella


Stigmella maoriella, the pigmy leafminer moth, is a species of moth of the family Nepticulidae. It is endemic to New Zealand and is found from Auckland to Hawke's Bay. Larvae are leaf miners of species in the genus Olearia. Adults have been observed on the wing in October. This species is classified as Not Threatened by the Department of Conservation.

Taxonomy

This species was first described by Francis Walker in 1864 and named Tinea maoriella using three specimens collected by Lt Col Daniel Bolton, Corps of [Royal Engineers|RE]. In 1988 John S. Dugdale assigned the species to the genus Stigmella. In 1989, Hans Donner and Christopher Wilkinson confirmed this placement in their monograph on New Zealand Nepticulidae. This placement was again confirmed in a 2016 revision of the global species placed in the family Nepticulidae. The lectotype specimen, collected in Auckland, is held at the Natural [History Museum, London].

Description

Walker described the species as follows:
Donner and Wilkinson described the adult male of this species as follows:
They pointed out that the lectotype and the two paralectotypes held at the Natural History Museum, London are all male and that, as at 1989, the female of this species was not yet known. However since that time further observations, including of females of this species, have occurred. Donner and Wilkinson also pointed out that this species can be differentiated from its close relatives S. ogygia and S. hakekeae as S. maoriella lacks the large cornutus ' on the aedeagus of the male of the species. S. maoriella is also larger than S. ilsea''.

Distribution

This species is endemic to New Zealand. It is found from Auckland to Hawke's Bay.

Habitat and host species

The larvae of this species feed on Olearia species.

Behaviour

Adults of this species has been observed on the wing in October.

Conservation status

This species has been classified as being "Not Threatened" under the New Zealand Threat Classification System.