New Zealand's micro-caddisfly fauna: why so depauperate?

Alice Wells *1

1 Australian Biological Resources Study, PO Box 787, Canberra, 2601, ACT, Australia

Today's distributions of faunal groups reflect historic events — geological and evolutionary, as well as dispersals, extinctions and chance.  To what extent is each of these responsible for the depauperate micro-caddisfly (Trichoptera, Hydroptilidae) fauna of New Zealand? This question is explored by comparison with the fauna, geology and geography of New Caledonia, Tasmania and mainland Australia.

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