Orthenches prasinodes

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Orthenches prasinodes
Fig 5 MA I437897 TePapa Plate-XXXVI-The-butterflies full (cropped).jpg
Illustration of female
Scientific classification
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O. prasinodes
Binomial name
Orthenches prasinodes
Meyrick, 1885 [1]

Orthenches prasinodes is a moth of the family Plutellidae. [1] It was first described by Edward Meyrick in 1885. This species is endemic to New Zealand and has been observed in both the North and South Islands in the Wellington, Canterbury and Southland regions. It inhabits native forest. The larval host are species in the genus Muehlenbeckia and larvae have been raised on Muehlenbeckia complexia. Adults are on the wing from December until March.

Contents

Taxonomy

This species was first described by Edward Meyrick in 1885 using a specimen collected in March at Riccarton Bush in Christchurch. [2] [3] Meyrick gave a more detailed description in 1886. [4] George Hudson discussed and illustrated this species in his 1928 book The butterflies and moths of New Zealand. [5] Hudson went on to give a description and illustration of the larva of this species in 1939. [6] Dugdale considered this species when describing the genus Chrysorthenches . [7] The male holotype specimen is held at the Natural History Museum, London. [3]

Description

Hudson's illustration of larva. Fig 35 MA I437915 TePapa Plate-LIV-A-supplement full (cropped).jpg
Hudson's illustration of larva.

Hudson described the larvae of this species as follows:

Length when full-grown about 12 inch (11 mm.). Cylindrical, slightly flattened, moderately stout, but strongly tapering at each end, especially posteriorly; segments deeply excised. Head small, ochreous-green; body grass green with darker dorsal stripe. Two or three days before spinning up the larva developes a rather complicated pattern of crimson markings as follows:—Segments 2, 3 and 4 each with an oval mark on midback; segments 5-11 inclusive with a rather long dull crimson bar on midback, and four shorter, more or less square crimson marks arranged on each side of this; segments 11 and 12 have a triangular dorsal mark; there is a very irregular broken lateral line on the sides of all segments except the head. The anal prolegs are long and conspicuously visible from above. [6]

Meyrick described the adult male of this species as follows:

Male. — 14 mm. Head and antennae grey-whitish. Palpi moderately long, grey-whitish, second joint, except apex, and base of terminal joint dark fuscous, terminal joint somewhat longer than second. Thorax light greenish-grey, suffusedly mixed with dark grey. Abdomen grey-whitish. Legs dark fuscous, apex of joints and posterior tibiae grey-whitish. Fore-wings elongate, costa sinuate, apex and hindmargin rounded ; light dull greenish, disc, inner and hind margins much suffused with dark grey, rest of wing indistinctly dotted with black, costa more distinctly; a small pale spot in dark suffusion below middle of fold; a small black spot in disc at 23 , preceded by a pale longitudinal streak in disc : cilia grey, mixed with grey-whitish. Hindwings elongate-ovate, beneath with a long thin pecten of hairs from vein 1c directed towards disc ; pale whitish-grey ; cilia grey-whitish, with a dark grey spot at apex. [4]

Hudson described the adults of this species as follows:

The expansion of the wings is 58 inch. The fore-wings are rather elongate with the apex and tornus rounded; yellowish-brown with numerous obscure pale ochreous dots along the dorsum and some of the veins and very faint purplish reflections; there is a very indefinite dark brown transverse shading before the middle; a streak before the apex and several darker dots on the termen and dorsum, The hind-wings are very pale greyish-ochreous, almost white. [5]

Dugdale was of the opinion that externally the adults of this species are identical to O. vinitincta . [3]

Distribution

This specie is endemic to New Zealand. [8] [9] As well as its type locality, this species has been observed in the Wellington region and in Invercargill. [5]

Habitat and hosts

Larval host M. complexa". Muehlenbeckia complexa 343831536.jpg
Larval host M. complexa".

O. prasinodes inhabits native forest. [5] The larval host plant are species in the genus Muehlenbeckia . [6] Larvae have been reared on Muehlenbeckia complexia . [10]

Behaviour

The larvae do not fold or twist the leaves of their host plant and are very active if disturbed. [6] Adults are on the wing from December until March. [5]

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References

  1. 1 2 Gordon, Dennis P., ed. (2010). New Zealand inventory of biodiversity: Kingdom animalia: chaetognatha, ecdysozoa, ichnofossils. Vol. 2. p. 463. ISBN   978-1-877257-93-3. OCLC   973607714. OL   25288394M. Wikidata   Q45922947.
  2. Edward Meyrick (1885). "Descriptions of New Zealand Micro-Lelidoptera. Gelechiadae VIII. Tineina (part)". New Zealand Journal of Science. 2: 591. Wikidata   Q124216081.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. 1 2 3 Dugdale , J. S. (23 September 1988). "Lepidoptera - annotated catalogue, and keys to family-group taxa". Fauna of New Zealand. 14. Department of Scientific and Industrial Research: 74. doi:10.7931/J2/FNZ.14. ISSN   0111-5383. Wikidata   Q45083134.
  4. 1 2 Edward Meyrick (May 1886). "Descriptions of New Zealand Micro-Lepidoptera". Transactions and Proceedings of the New Zealand Institute. 18: 176. ISSN   1176-6158. Wikidata   Q109405465.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  5. 1 2 3 4 5 Hudson, G. V. (1928), The butterflies and moths of New Zealand, Illustrator: George Hudson, Wellington: Ferguson and Osborn Limited, p. 329, LCCN   88133764, OCLC   25449322, Wikidata   Q58593286 PD-icon.svg This article incorporates text from this source, which is in the public domain .
  6. 1 2 3 4 George Vernon Hudson (1939), A supplement to the butterflies and moths of New Zealand, Illustrator: George Hudson, Wellington: Ferguson and Osborn Limited, p. 462, OCLC   9742724, Wikidata   Q109420935 PD-icon.svg This article incorporates text from this source, which is in the public domain .
  7. J. S. Dugdale (January 1996). "Chrysorthenches new genus, conifer‐associated plutellid moths (Yponomeutoidea, Lepidoptera) in New Zealand and Australia". New Zealand Journal of Zoology. 23 (1): 33–59. doi:10.1080/03014223.1996.9518064. ISSN   0301-4223. Wikidata   Q54576386.
  8. "Orthenches prasinodes Meyrick, 1885". www.nzor.org.nz. Retrieved 2022-05-04.
  9. "Orthenches prasinodes Meyrick, 1885". biotanz.landcareresearch.co.nz. 23 January 2015. Retrieved 2024-01-09.
  10. "Orthenches prasinodes Meyrick, 1885". plant-synz.landcareresearch.co.nz. 2011. Retrieved 2024-01-09.