Review of New Caledonian species of Oxyethira Eaton, with description of 17 new species, and new records for Hydroptila Dalman and Hellyethira Neboiss (Trichoptera, Hydroptilidae)

Abstract

New Caledonian representation of the cosmopolitan genus Oxyethira Eaton is reviewed, with the description of new species bringing to 26 the total for the genus on the island. The species are referred to three subgenera: Trichoglene Neboiss (11 species), Pacificotrichia Kelley (13 species) and Dampfitrichia Ulmer (one species) and one species is unplaced to subgenus. A key is provided to Oxyethira species of New Caledonia. In addition, new records are given for two otherwise Australian species, Hydroptila losida Mosely and Hellyethira malleoforma Wells. Points marked on a series of small maps of New Caledonia indicate the site or sites at which the species were collected. This final paper in a series of generic revisions brings the hydroptilid fauna of the island of New Caledonia to 60 species, distributed in six genera.

<strong>New Caledonia's Trichoptera—present status of knowledge</strong>

“…The data were gathered from published scientific articles which constitute the source for all data (Espeland & Johanson 2007Johanson 1999Johanson , 2002Johanson , 2003aJohanson ,b, 2011Johanson & Keijsner 2008;Johanson & Mary 2000;Johanson & Ward 2001, 2009Kelley 1989;Malicky 1981;Malm & Johanson 2007, 2008aMarshall 1979;Mary & Ward 2001;Neboiss 1986;Oláh et al 2006;Oláh & Johanson 2010;Ross 1975;Schefter & Ward 2002;Schmid 1989;Sykora 1967;Ulmer 1906;Ward 2001Ward , 2003Ward & Mary 2000;Ward & Schefter 2000;Wells 1995;Wells & Johanson 2012, 2014, 2015Wells et al 2013). All unpublished data was excluded from the analysis.…”

“…Caledonotrichia minuta Wells, Johanson & Mary-Sasal, 2013Caledonotrichia nyurga Oláh & Johanson, 2010 Caledonotrichia ouinnica Wells, Johanson & Mary-Sasal, 2013 Caledonotrichia sykorai Wells, Johanson & Mary-Sasal, 2013 Caledonotrichia vexilla Wells, Johanson & Mary-Sasal, 2013Hellyethira Neboiss, 1977 Hellyethira malleoforma Wells, 1979 (this Australian species was first recorded from New Caledonia by Wells (1995)) Hydroptila Dalman, 1819 Hydroptila losida Mosely, 1953 (this Australian species was first recorded from New Caledonia by Wells (1995)) Oxyethira Eaton, 1873 Oxyethira amieu Wells & Johanson, 2015 Oxyethira abbreviata Wells & Johanson, 2015Oxyethira arok Oláh & Johanson, 2010 Oxyethira caledoniensis Kelley, 1989 Oxyethira digitata Wells & Johanson, 2015 Oxyethira dorsennus Kelley, 1989 Oxyethira enigmatica Wells & Johanson, 2015Oxyethira houailou Wells & Johanson, 2015Oxyethira incana Ulmer, 1906 Gnathotrichia australiensis Wells, 1981;Kelley (1984) Stenoxyethira excisa Kimmins, 1951;Kelley (1984) Oxyethira galekoluma Schmid, 1958;Malicky & Chantaramongkol (2007) Gnathotrichia isabellina Ulmer, 1951;Marshall (1979…”

<p class="Body" align="left"><strong>Micro-caddisfly faunas of Australia and the southwest Pacific (Trichoptera, Hydroptilidae)</strong></p>

“…Are Tricholeiochiton and Jabitrichia relictual genera that were more widespread before the breakup of the Laurasian land mass? Wells (1991), Johanson et al (2011), ABRS (2012), Morse (2012) and Wells & Johanson (2014, 2015.…”

“…A separate lineage dispersed to New Caledonia directly from the Australian mainland about 15 mya. 2012, Espeland & Johanson (2007, 2010a,b, 2008, Johanson (2007Johanson ( , 2011, Johanson & Keijsner (2008), Johanson & Ward (2009), Malm & Johanson (2007, 2008a, Morse (2012), Ward (2011) and Wells & Johanson (2014, 2015.…”

Three new species of Oxyethira Eaton, 1873 (Trichoptera: Hydroptilidae) from New Caledonia

“…Oxyethira species are currently grouped into 11 subgenera, but 29 species remain as incertae sedis (Kelley 1984(Kelley , 1989Oezdikmen 2007;Morse et al 2021). The subgenus Trichoglene Neboiss, 1977 (26 species) has an Australasian distribution and occurs in Australia, New Caledonia and New Zealand (Wells & Johanson 2015;Morse et al 2021).…”