Hydrobiosella nandawar, Cartwright, 2010

Cartwright, David I., 2010, Studies of Australian Hydrobiosella Tillyard: a review of the Australian species of the Hydrobiosella bispina Kimmins group (Trichoptera: Philopotamidae), Memoirs of Museum Victoria 67, pp. 1-13 : 4

Hydrobiosella nandawar sp. nov.

Figures 8–10

Holotype. Male, New South Wales, Mt Kaputar , 30°16'S, 150°10'E, 3 Jan 1986, G. Theischinger ( NMV, T-20914)

Paratype. New South Wales. 1 male (specimen CT-428 figured), Mt Kaputar Nat. Pk, Dawson Springs , 9 Oct 1973, A. Neboiss ( NMV) .

Diagnosis. Hydrobiosella nandawar can be separated from other species in the group by the rounded, slightly bulbous and dorsoventrally flattened apex on segment X.

Description. Wings similar to those of H.arcuata (fig. 1), length of forewing: male 7.6–8.0 mm.

Male. Segment IX without a noticeable notch medially on distal margin (fig. 10). Segment X mesal lobe with distal third slightly dorsoventrally compressed (figs 8–9); in lateral view, distal third slender, straight (fig. 9); in dorsal view, distal third narrowed subapically, slightly bulbous and rounded apically (fig. 8), with a pair of pigmented lateral lobes, which terminate in small, slightly downward projecting hooks (figs 8–9). Inferior appendages in lateral view, with basal segment length about twice maximum width, broadest in basal third, tapered slightly distally; harpago shorter than basal segment, length about 0.8 times length basal segment, slender, length about 4.5 times width, weakly (obtusely) angled near middle (fig. 9).

Female. Unknown.

Etymology. Nandawar — Australian Aboriginal name for ‘Mt Kaputar’ (type locality).

Remarks. Two male specimens of Hydrobiosella nandawar have been collected from the Mt Kaputar National Park in northeastern New South Wales (latitude 30°16'S).

Figures

Figures 8–16. Hydrobiosella spp. male genitalia in dorsal, lateral and part ventral views; 8–10, Hydrobiosella nandawar sp. nov.; 8, dorsal; 9, lateral; 10, ventral, mesodistal margin of segment IX; 11–13, Hydrobiosella dugerang sp. nov.; 11, dorsal; 12, lateral; 13, ventral, mesodistal margin of segment IX; 14–16, Hydrobiosella bilga sp. nov.; 14, dorsal; 15, lateral; 16, ventral, mesodistal margin of segment IX.