The Chironomidae and Ceratopogonidae (Diptera) of New Zealand’s subantarctic islands

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Abstract
A taxonomic study of midges collected in the subantarctic islands of New Zealand yielded 22 species of Chironomidae and 4 of Ceratopogonidae. Only four of the chironomids occur elsewhere, three on ‘mainland’ New Zealand and one on The Snares islands. Of the 15 species found on the Auckland Islands, 11 on Campbell Island, and 5 on the Antipodes Islands, respectively 9, 4, and 2 are endemic. Nine new species are proposed in existing genera: Parochlus rennelli, P. reductus, P. gressitti, P. brevis, Telmatogeton antipodensis, Eukiefferiella heveli, Cricotopus aucklandensis, Chironomus antipodensis, and C. subantarcticus. Gressittius n.gen. is proposed for Corethra antarctica Hudson (type-species). Semiocladius n.gen. is proposed for Camptocladius crassipennis Skuse, and S. kuscheli n.sp. is described. Eight further new genera are proposed, with the following new species as type-species: Kuschelius dentifer, Mecaorus elongatus, Pterosis wisei, Hevelius carinatus, Gynnidocladius pilulus, Nesiocladius gressitti, Nakataia cisdentifer, and Maryella reducta. Genera Halirytus Eaton and Psamathiomya Deby are synonymised with Telmatogeton Schiner. Gressittius antarcticus (Hudson), Ablabesmyia mala (Hutton), Telmatogeton magellanicus (Jacobs), T. amphibius (Eaton), T. macquariensis (Brundin), Semiocladius crassipennis (Skuse), S. endocladiae (Tokunaga), and Calopsectra funebris (Freeman) are new combinations. Of the ceratopogonids, only one species occurs elsewhere in New Zealand. Three species, only one of them endemic, were found on the Auckland Islands; two were found on Campbell, of which only one is endemic. Forcipomyia kuscheli and Dasyhelea aucklandensis are proposed as new species.

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