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Volume 52, 1920
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Art. VII.—Descriptions of New Zealand Lepidoptera.

[Read before the Wellington Philosophical Society, 3rd December, 1919; received by Editor 31st December, 1919; issued separately, 4th June, 1920.]

I am again indebted to the kindness of my esteemed correspondent Mr. G. V. Hudson for the material on which the following descriptions are based.

Crambidae.

Orocrambus ventosus n. sp.

♀. 26–27 mm. Head, palpi, and thorax blackish, mixed with brown hairs. Abdomen dark fuscous irrorated with pale greyish-ochreous. Forewings elongate, posteriorly dilated, costa hardly arched, apex obtuse, termen slightly rounded, little oblique; dark fuscous, suffusedly mixed with brown, especially on posterior half, somewhat lighter on post-median area, veins on posterior half more or less obscurely indicated with whitish scales; a very obscurely indicated angulated darker transverse line towards termen: cilia grey, tips white, with a tendency to obscure whitish bars on veins. Hindwings grey, becoming dark grey towards termen: cilia ochreous grey-whitish, with grey basal line.

Mount Arthur, 4,200 ft., in January (Hudson); two specimens.

Pyraustidae.

Scoparia ciserodes n. sp.

♂. 17 mm. Head grey suffusedly mixed with white. Labial palpi 2, dark grey, base whitish, apical edge mixed with whitish. Maxillary palpi white, basal half dark fuscous. Thorax grey irrorated with white, a streak of blackish irroration on each side of back. Abdomen grey-whitish. Fore-wings elongate, narrow at base, posteriorly dilated, costa anteriorly straight, posteriorly gently arched, apex obtuse, termen rounded, rather oblique; light grey irrorated with white, with some scattered blackish scales; a short fine blackish median longitudinal line rising from a small white spot at base; lines indistinct, whitish, first slightly curved, direct (rubbed), second obtusely angulated in middle; small cloudy dark-grey spots on costa beyond middle and at ¾; orbicular and claviform indicated by some scattered blackish scales, discal spot represented by a slight 3-armed blackish mark, posterior arm edged beneath with pale ochreous; two or three dashes of blackish irroration towards upper part of termen cilia whitish, with subbasal series of well-marked grey spots. Hindwings 1⅕, grey-whitish: cilia whitish, with very faint greyish subbasal line.

Porirua, Wellington, in January (Hudson); one specimen. An inconspicuous insect, yet quite distinct from anything else.

Tortricidae.

Tortrix sphenias Meyr.

Mr. Hudson has pointed out to me that this species (originally referred by me to Cnephasia), of which he has sent a second specimen from Dunedin, is very close to fervida, and suggested that the two are identical. This

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second specimen has veins 6 and 7 of hindwings separate; in the original type they are unmistakably stalked, but it now appears probable that this was an individual abnormality, and the presence of a costal fold (a discordant character in Cnephasia) and the specific affinity to fervida indicate that the species should be removed to Tortrix. After careful comparison with my seven specimens of fervida, however, I entertain no doubt that the two species are distinct; apart from superficial colouring, in which there is certainly some variability, the ciliations of antennae in ♂ are obviously longer and more fasciculate in fervida, and the termen of forewings in that species is distinctly less oblique than in sphenias.

Oecophoridae.

Borkhausenia compsogramma n. sp.

♂. 13–15 mm. Head, thorax, and abdomen dark purplish-fuscous. Antennal ciliations 1. Palpi grey, second joint sometimes partially suffused with whitish-yellowish. Forewings elongate; costa gently arched apex obtuse, termen obliquely rounded; dark violet-fuscous; markings ochreous-yellow suffused in disc with fulvous-orange, and with some scattered blackish scales on their edges; an oval blotch extending over basal fourth of dorsum; a narrow irregular rather oblique fascia from costa before ⅓, not reaching dorsum; a transverse fasciate blotch from costa beyond middle, and another inwardly oblique from costa at ⅘, both directed towards but not reaching a spot on dorsum before tornus; a streak along termen throughout: cilia fuscous, base scaled with ochreous-yellow along terminal streak. Hindwings and cilia dark grey.

Buller River, in December (Hudson); two specimens. At first sight extremely like chrysogramma, but on comparison the markings are seen to be quite differently arranged.

Izatha amorbas Meyr.

This species has an elongate pale-yellow blotch extending beneath median third of costa of hindwings, sometimes nearly obsolete, and not noticed in my description, but in an example now sent from Dunedin it is conspicuous.

Lyonetiadae.

Hectacma crypsimima n. sp.

♂. 10 mm. Head grey mixed with whitish and blackish. Palpi dark fuscous. Thorax dark fuscous slightly speckled with whitish. Abdomen dark fuscous. Forewings elongate, rather narrow, costa gently arched, apex tolerably pointed, termen hardly rounded, extremely oblique; bronzy-brown, irregularly speckled with whitish except in posterior part of disc, with some scattered blackish scales; a very oblique blackish wedge-shaped streak from basal part of costa reaching half across wing; oblique blackish wedge-shaped spots from costa before middle and towards apex, and one from middle of dorsum; a small round blackish apical spot: cilia grey, whitish-tinged round apex, with two blackish lines. Hindwings and cilia dark fuscous.

Wellington, in February (Hudson); one specimen, “taken on black Fagus trunks.”

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Tineidae.

Mallobathra perisseuta n. sp.

♂. 15 mm. Head, palpi, thorax, and abdomen dark fuscous. Antenna ciliations 2½. Forewings elongate, posteriorly slightly dilated, costa gently arched, apex obtuse, termen obliquely rounded; 6 present; fuscous, anterior half of costa suffused with darker fuscous; a dark-fuscous quadrate spot on middle of dorsum, preceded and followed by suffused whitish blotches: cilia fuscous. Hindwings with 6 present; rather dark fuscous: cilia fuscous.

Dunedin, in October (Clarke); one specimen.