Bascantis

Bascantis is a genus of moths belonging to the family Tineidae. It contains only one species, Bascantis sirenica, that is endemic to New Zealand. This species is classified as "Data Deficient" by the Department of Conservation.

Taxonomy
This species was described by Edward Meyrick in 1914 using a specimen collected by George Hudson at Kaeo in January. Hudson discussed and illustrated this species both in his 1928 book The Butterflies and Moths of New Zealand as well as his 1950 publication Fragments of New Zealand entomology. The holotype specimen is held at the Natural History Museum, London.

Description
Meyrick described the species as follows: "♀︎. 12 mm. Head and thorax deep purple, face whitish. Palpi dark fuscous. Antennae violet - fuscous. Abdomen dark bluish - grey. Forewings elongate, rather narrow, posteriorly slightly dilated, costa anteriorly slightly, towards apex strongly arched, apex obtuse, termen obliquely rounded ; deep purple ; a semioval ochreous-white spot on middle of costa, reaching $1/3$ across wing ; dorsum obscurely marked with several small blue- metallic spots and minute whitish dots ; a transverse-linear blackish mark in disc at $3/4$ ; a narrow bright-purple transverse fascia shot with metallic-blue and edged anteriorly with indistinct white dots from beyond $3/4$ of costa to tornus, and another before apex : cilia dark grey, with blackish median line. Hindwings dark bronzy-fuscous, lighter anteriorly ; cilia dark grey."

Distribution
This species is endemic to New Zealand. Along with the type locality of Kaeo, this species has also been collected in Waitākere Ranges, Days Bay, and Wainuiomata. It was last seen in 1950.

Biology and behaviour
The adult moth is on the wing in January. It is a day flying moth. It has been hypothesised that this moth mimics the appearance of the beetle Zorion guttigerum.

Host species and habitat
This species has been collected by sweeping in dense forest.

Conservation status
This moth is classified under the New Zealand Threat Classification system as being Data Deficient.