Tingena siderodeta

Meyrick first described this species as follows:

Fore wings narrow, ochreous, suffused with dark fuscous, sometimes with three obscure fasciae, inner margin generally paler; hind wings dark grey. Meyrick, in his more detailed description, stated:

Male, female. — 12-14 mm. Head, palpi, and thorax ochreous, densely mixed with dark fuscous. Antennas dark fuscous. Abdomen grey. Legs dark fuscous, central ring of tibiae, hairs of posterior tibiaa, and apex of all joints whitish. Forewings elongate, narrow, costa gently arched, more strongly near base, apex pointed, hindmargin extremely obliquely rounded; brownish-ochreous, densely irrorated with dark fuscous, which tends to form three broad oblique cloudy fasciae, but these are often wholly suffused and confluent; generally there is a more or less distinctly clear brownish-ochreous space towards base of inner margin : cilia ochreous-whitish, with numerous irregular rows of dark fuscous points, tips clear whitish. Hindwings dark fuscous; cilia grey, towards base dark fuscous.Philpott stated that specimens of this species collected in Stewart Island / Rakiura are larger than those from other locations.

This species is endemic to New Zealand and is found throughout the country. This species has also been found in a site of ecological significance in Christchurch as set out in the Christchurch District Plan.

Adults of this species are on the wing from October until February. It can be found flying in daylight hours and has been collected when resting on fence posts or tree trunks. This species has also been collected at night via a Malaise trap. When idle this species resembles a small pointed twig as its body position ensures its antennae are held backwards, the wings encircle the body and the rear end of the insect is lifted with the head lowered.