Abstract Twelve new species of Trichoptera from New Zealand are named and described, as follows. Hydrobiosidae: Edpercivalia oriens, Hydrobiosis centralis, Hydrobiosis neadelphus, Hydrobiosis taumata, Hydrochorema lyfordi, and Tiphobiosis quadrifurca; Conoesucidae: Pycnocentria mordax; Oeconesidae: Oeconesus angustus, Pseudoeconesus geraldinae, Pseudoeconesus haasti, Pseudoeconesus hendersoni, and Pseudoeconesus paludis. The differential characters and distributions of the valid Pseudoeconesus species are summarised. Corrected holotype localities are given for Oeconesus similis Mosely, 1953, Pseudoeconesus stramineus McLachlan, 1894, and P. squamosus Mosely, 1953. Pseudoeconesus tristirpis Wise, 1958 is declared a junior synonym of P. bistirpis Wise, 1958; and Pseudoeconesus karoriensis Mosely, 1953 a junior synonym of P. mimus McLachlan, 1894.
Keywords taxonomy; New Zealand; caddis; Trichoptera; Hydrobiosidae; Conoesucidae; Oeconesidae; new species; new synonymy
Received 23 August 1996; accepted 22 December 1996
New Zealand Journal of Zoology, 1997, Vol. 24: 173-191
0301-4223/2402-0173 $7.00/0 (c) The Royal Society of New Zealand 1997
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