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Slender owlet moth facts for kids

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Slender owlet moth
Rhapsa scotosialis female.jpg
Female
Rhapsa scotosialis male.jpg
Male
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Family:
Genus:
Rhapsa
Species:
R. scotosialis
Binomial name
Rhapsa scotosialis
Walker, 1866
Synonyms
  • Herminia lilacina Butler, 1877

Rhapsa scotosialis, the slender owlet moth, is a moth of the family Noctuidae. R. scotosialis is one of the most common forest moths found in New Zealand.

Taxonomy

This species was first described by Francis Walker in 1866 from specimens collected in Auckland. It was also described by Arthur Gardiner Butler in 1877 using the name Herminia lilacina. This name was subsequently synonymised by Edward Meyrick in 1887.

Description

The adults of this species were described by George Hudson as follows:

The expansion of the wings is 1 3/8 inches. The fore-wings have the costa considerably arched towards the apex, and the termen is bowed outwards in the middle; the colour is pale brown in the male and dark brown in the female; there are several obscure black marks near the base; the orbicular is very small, orange or pale grey outlined in black, the claviform is absent, the reniform is conspicuous, the outer edge is much indented, the inner edge is outlined with dull orange-red, there is a black blotch between the orbicular and the reniform; beyond the reniform there is a carved transverse line enveloping a series of minute black dots, then a very conspicuous wavy transverse line shaded towards the base of the wing; there is a pale triangular area at the apex, and a series of small crescentic dark brown markings on the termen; the cilia are dark brown. The hind-wings are greyish-ochreous; there is a rather faint line across the middle, followed by a broad shade; a series of small crescentic marks is situated on the termen; the cilia are dark greyish-ochreous. The antenna of the male are strongly bipectinated. The female is considerably darker, the markings are less distinct and numerous, and there is no black blotch between the orbicular and the reniform.

Distribution

This species is endemic to New Zealand and can be found throughout the country.

Life stages

The eggs of R. scotosialis are bright green when freshly laid and turn a dull purple colour after a couple of days. The caterpillar has a brown head and a white body. Each segment of the body of the caterpillar has a small round protuberance from which come a tuft of hairs.

Host species

The host species for the larvae of R. scotosialis is Piper excelsum.

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