Two further species groups and new species among Australian Hydrobiosella Tillyard: new species from south-eastern Australia (Trichoptera: Philopotamidae) Author Cartwright, David I. 13 Brolga Crescent, Wandana Heights, Victoria 3216, Australia cartwright@hotkey.net.au text Memoirs of Museum Victoria 2012 2012-12-31 69 245 258 https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-69-2012/pages-245-258/ journal article 10.24199/j.mmv.2012.69.03 1447-2554 10666102 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