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Monotypic genus of tortrix moths From Wikipedia, the free encyclopedia
Ochetarcha is a genus of moths belonging to the subfamily Tortricinae of the family Tortricidae.[1] It contains only one described species, Ochetarcha miraculosa, also known as the ponga stem borer, which is found in New Zealand.
Ochetarcha | |
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Ochetarcha sp. (undescribed) illustration by Des Helmore | |
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Genus: | Ochetarcha Meyrick, 1924 |
Species: | O. miraculosa |
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Ochetarcha miraculosa (Meyrick, 1917) | |
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The mature larva of this species is coloured a creamish-yellow and is between 15 and 20 mm long.[2]
The wingspan is about 23 mm. The forewings pale-brownish, strigulated with purplish-grey. The extreme costal edge is whitish-ochreous and there is some purplish suffusion towards the base of the costa. The hindwings are dark grey.[3]
The larva of this species create a sticky cone formed from its waste on the stems of its host plant.[2] The larvae consume the fronds of its host toward the tip of stem and make tunnels of between 8 and 10 mm long.[2] When at rest the adult moth holds its wings at a v-shaped angle.[2] The adult moths are on the wing from December to March.[2]
The larval host of this species Cyathea dealbata.[2]
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