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Phylogenetic analysis of the genus Helicopha Mosely (Trichoptera: Helicophidae), with description of five new species from New Caledonia

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Five new Helicopha species are described from New Caledonia: H. paniensis sp.n., H. amieuensis sp.n., H. einap sp.n., H. ramea sp.n. and H. dognyensis sp.n. The new species are all endemic to New Caledonia and described herein. Distributional data is included on maps for all eight New Caledonian Helicopha species. A key to the males of New Caledonian Helicophidae is presented. Phylogenetic analyses performed on morphological characters of the males of Helicophidae species show that the New Caledonia Helicopha are monophyletic, but the relationship between the Australian and New Caledonian Helicopha species is at present not fully understood. Analyzing with equally weighted characters leaves the Australian Helicopha as the sistergroup to the New Caledonian Helicopha. When characters are weighted using implied weights and concavity constant of 2, the New Zealand Zelolessica split the New Caledonian and Australian Helicopha, leaving Helicopha paraphyletic. The monotypic New Caledonian genus Briama is closely related to Helicopha in all results.


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