Oxyethira (Trichoglene) insularis Kelley

Wells, Alice & Johanson, Kjell Arne, 2015, 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), ZooKeys 530, pp. 37-90 : 48-49

Taxon classification Animalia Trichoptera Hydroptilidae

Oxyethira (Trichoglene) insularis Kelley Figs 28-30, 95

Oxyethira insularis Kelley, 1989: 196, figs 34, 43, 57.

Revised diagnosis.

This species shares with Oxyethira parinsularis sp. n. the feature of gonopods, in ventral view, in the form of a prominent, sclerotised, Y-shaped structure, arising at around the distal third of abdominal segment IX, but differs from Oxyethira parinsularis sp. n. by having the fused basal section over 2 × length of the divergent distal arms, not forming a shallow sclerotised band, and the bifid distal arms about 1/3 length of basal stem, not greatly exceeding length of base as in Oxyethira parinsularis sp. n.

Male antennae with 18 flagellomeres; flagellomeres rectangular in profile, without sensilla placodea, with abundant sensilla auricillica. Anterior wing length 1.5-1.8 mm (n=3). Tibial spurs 0,3,4. Venter of abdominal sternite VII with median spine.

Material examined.

Holotype. Male, New Caledonia, mountain stream up Boulari River, (BPBM). Other material. 2 males (1 on slide), Province Sud, Mt Dzumac, source stream of Ouinne River, near crosspoint to mountain track, 22°02.073'S, 166°28.460'E, 810 m, 18. xi– 4.xii.2003, Malaise trap, loc#030, leg. K.A. Johanson (NHRS); 1 male, Prov ince Sud, on road between Noumea and Yaté, 1.0 km NW Pont des Japonais, 22°11.427'S, 166°42.868'E, 113 m, 22. xi– 4.xii.2003, Malaise trap, loc#039, leg. K.A. Johanson.

Remarks.

Among the extensive collection of New Caledonian Oxyethira at hand, only three specimens of this species were identified, all from the south of the island (Fig. 95). Other specimens from one of the sites at which they were taken are distinct and are referred to Oxyethira parinsularis sp. n.