Hydrobiosella Tillyard 1924

Cartwright, David I., 2012, Two further species groups and new species among Australian Hydrobiosella Tillyard: new species from south-eastern Australia (Trichoptera: Philopotamidae), Memoirs of Museum Victoria 69, pp. 245-258 : 246

Hydrobiosella Tillyard 1924

Hydrobiosella Tillyard 1924: 288 ; Mosely and Kimmins 1953: 387; Neboiss 1977: 45; Neboiss 2003: 55.

Type species. Hydrobiosella stenocerca Tillyard by monotypy.

Generic descriptions are given by Tillyard (1924: 288); Mosely and Kimmins (1953: 387) and Neboiss (1977: 45).

Key to males of known Australian groups (or ungrouped species) of Hydrobiosella Tillyard (after Cartwright 2010, 2012)

1. Phallus without pair of parameres ( Figs 2, 3, 5, 6 ; Cartwright 2012a, figs 2, 3; Neboiss 1986, figs pp. 99, H. amblyopia ; 101, H. tasmanica ; 102, H. corinna ) 2

- Phallus with pair of parameres ( Cartwright 2010, figs 2, 3, 5, 6; Neboiss 1986, figs pp. 99, H. michaelseni , H. waddama; 101, H. letti ; 102, H.bispina ; 103, H. arcuata ) 6

2. Preanal appendages present, usually small ( Cartwright2012a, figs 2, 3; Neboiss 1977, figs 204, 205, 216, 217; Neboiss 1986, figs pp. 101, H. tasmanica ; 102, H. corinna ; Neboiss 2003, figs 8a–h) 3

- Preanal appendages absent ( Figs 2, 3 , 18, 19 ; Neboiss 1986, figs pp. 99, H. amblyopia ; 101, H. tasmanica ) 4

3. Preanal appendages relatively slender, elongate and ‘unattached’ to segment IX ( Cartwright 2012a, figs 2, 3, 5); NE-Qld Hydrobiosella eminentia group

- Preanal appendages often short and bulbous or ‘attached’ to segment IX ( Neboiss, 1977, figs 204-211; Neboiss 1986, figs p. 102, H. corinna ; Neboiss, 2003, figs 8A-H); Tas Hydrobiosella corinna group

4. Phallus apically with downward projecting spine(s) ( Neboiss 1977, figs 216-221, 225, 226; Neboiss 1986, figs p. 101, H. armata , H. tasmanica ; Neboiss 2003, figs 10A-G, 11A-G, 12A-F); Tas H. tasmanica group

- Phallus apically without downward projecting spine(s) ( Figs 2, 3 ; Neboiss 1982, fig. 12; Neboiss 1986, figs p. 99 H. amblyopia ) 5

5. Segment IX with a large disto-lateral projection ( Neboiss 1982, fig. 12; Neboiss 1986, figs p. 99 H. amblyopia ); S-WA H. amblyopia (ungrouped)

- Segment IX without a large disto-lateral projection ( Figs 2, 3, 5, 6 ); C and NE Vic H. bandabanda group

6. Inferior appendages with harpago with dark row of setae forming fringe along ventral margin ( Cartwright 2010, figs 3, 6; Neboiss 1986, figs pp. 102, H.bispina ; 103, H. arcuata); E-Vic, E-NSW, E-Qld Hydrobiosella bispina group

- Inferior appendages with harpago without dark row of setae forming fringe along ventral margin ( Figs 18, 19 ; Neboiss 1986, figs pp. 99, H. michaelseni , H. waddama ) 7

7. Parameres elongate and sinusoidal, attached ventrally to base of phallus ( Cartwright 2012b, figs 2, 3, 5, 6; Neboiss 1977, fig. 233; Neboiss 1986, figs p. 99, H. waddama ); Tas, SE Aust. Hydrobiosella waddama group

– Parameres not elongate and sinusoidal, not attached ventrally to base of phallus ( Figs 18, 19 ; Neboiss 1982, figs 9, 10; Neboiss 1986, figs pp. 99, H. michaelseni ; 101, H. letti ) 8

8. Parameres curved strongly and crossed ( Neboiss 1982, figs 9, 10; Neboiss 1986, figs p. 99; H. michaelseni ); S-WA Hydrobiosella michaelseni (Ulmer) (unplaced to group)

- Parameres not curved strongly and crossed ( Figs 18, 19 ; Neboiss 1986, figs p. 101, H. letti ); NE-Vic, CE-NSW, E-Qld Hydrobiosella letti group

Figures

Figures 1–7. Hydrobiosella spp.; 1, Hydrobiosella bandabanda sp. nov., distal part of wings; 2–7, Hydrobiosella spp., male genitalia in dorsal, lateral and part ventral views; 2–4, Hydrobiosella bandabanda sp. nov.; 2, dorsal; 3, lateral; 4, ventral, mesodistal margin of segment IX; 2a–4a, Hydrobiosella bandabanda sp. nov. (variant); 2a, dorsal; 3a, lateral; 4a, ventral, mesodistal margin of segment IX; 5–7, Hydrobiosella tiarka sp. nov.; 5, dorsal. 6, lateral; 7, ventral, mesodistal margin of segment IX.

Figures 17–23. Hydrobiosella spp.; 17, Hydrobiosella letti Korboot., wings. 18–23, Hydrobiosella spp., male genitalia in dorsal, lateral and part ventral views; 18–20, Hydrobiosella fibra sp. nov.; 18, dorsal; 19, lateral; 20, ventral, mesodistal margin of segment IX; 21–23, Hydrobiosella bifurca sp. nov.; 21, dorsal; 22, lateral; 23, ventral, mesodistal margin of segment IX.