Hydrobiosella dugarang, 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 : 7

Hydrobiosella dugarang sp. nov.

Figures 11–13

Holotype. Male (specimen CT-560 figured), Queensland, Dalrymple Ck near Eungella , 21°02'S, 148°43'E, 3 Apr 1993, G. Theischinger ( NMV, T-20915).

Diagnosis. Hydrobiosella dugarang can be separated from other species in the group by the robust subapical, lateral pair of hooks and slender apex, both on segment X in lateral view.

Description. Wings similar to those of H.arcuata (fig. 1), length of forewing: male 6.2 mm.

Male. Segment IX with a small notch medially on distal margin (fig. 13). Segment X with slender mesal lobe (figs 11–12); in lateral view, slightly downcurved apically (fig. 12); in dorsal view, slender, not narrowed subapically (fig. 11), with a pair of more pigmented lateral lobes, which terminate in robust, downward projecting hooks (figs 11–12). Inferior appendages in lateral view, with basal segment length about twice maximum width, broadest in basal half, tapered slightly distally; harpago about same length as basal segment, slender, straight, length about 5.7–5.9 times width (fig. 12).

Female. Unknown.

Etymology. Dugarang — Australian Aboriginal word for ‘straight’ (inferior appendages).

Remarks. The male holotype is the only known specimen of Hydrobiosella dugarang from the type locality in northeastern Queensland (latitude 21°02'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.