Hydrobiosella bandabanda, Cartwright, 2012

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 : 247

publication ID	https://doi.org/ 10.24199/j.mmv.2012.69.03
DOI	https://doi.org/10.5281/zenodo.10886311
persistent identifier	https://treatment.plazi.org/id/AF02CC77-974E-0B43-E307-FE3990CA3012
treatment provided by	Felipe
scientific name	Hydrobiosella bandabanda
status	sp. nov.

Treatment

Hydrobiosella bandabanda sp. nov.

Figures 1, 2, 2a, 3, 3a, 4, 4a View Figures 1–7 , 38, 38a View Figures 38–43

Holotype. Male. Victoria, Toorongo Falls , 7 km NE of Noojee, (about 37°51'S, 146°00'E), 27 Nov 1981, J. Morse & A. Neboiss ( NMV, T- 21392). GoogleMaps

Paratypes. Victoria. 4 males (specimen CT-593 figured) , 1 female (specimen CT-594 figured), collected with holotype GoogleMaps ; 7 males (specimen PT-581 figured), 2 females (specimen CT-612 figured), Newlands Ck , Upper Thomson R. (about 37°37'S, 146°10'E), 26 Feb 1978, TR Survey ( NMV) GoogleMaps .

Other material examined. Victoria. 2 males, Falls Ck Ski Village , 26 Mar 1957, A. Neboiss ; 1 male, Cumberland Falls , SE of Marysville, 7 Jan 1971, A. Neboiss ; 1 male, Baw Baw Ski Village , 4900 ft, 8 Jun 1974, J.C .; 1 male, Cement Ck, Mt Donna Buang Rd , 3 Mar 1980, J. Dean ?; 1 male, small ck 1 km N Rum Ck , 9 Nov 1983, D. Cartwright ( NMV) .

Diagnosis. Males of Hydrobiosella bandabanda can be distinguished from those of other species in the group by a central dorsal ridge or groove with a pair of lateral acute processes on segment X.

Description. Wings typical of the genus ( Fig. 1 View Figures 1–7 ), similar to those of H. bispina ( Cartwright, 2010, fig. 1). Length of forewing; male 6.7–9.1 mm, female 7.2–9.3 mm.

Male. Segment IX with a shallow, wide V-shaped notch medially on distal margin ( Figs 4, 4a View Figures 1–7 ). Segment X in dorsal view, a ‘tongue-shaped’ process, with sides almost parallel, a pair of small knobs baso-laterally, tapered distally and with a central dorsal ridge or groove bearing a pair of lateral acute processes ( Figs 2, 2a View Figures 1–7 ), length about 3-3.5 times width; in lateral view broad-based, slightly curved ( Fig. 3 View Figures 1–7 ), or straight ( Fig. 3a View Figures 1–7 ) slender in middle, usually slightly dilated distally with a sub-apical ‘knob’ ( Fig. 3 View Figures 1–7 ), sometimes without ‘knob’ ( Fig. 3a View Figures 1–7 ). Phallus generally tube-like, robust, with a pair of sub-apical spines and two smaller spines basally ( Figs 2, 2a, 3, 3a View Figures 1–7 ). Inferior appendages in lateral view, with basal segment broadest near middle, length about twice maximum width; harpago shorter, length about half length basal segment, more slender, length about twice maximum width, apex broadly rounded ( Figs 3, 3a View Figures 1–7 ).

Female. Genitalia typical of genus, with a small acute projection on sternite IX meso-distally ( Figs 38, 38a View Figures 38–43 ).

Etymology. Bandabanda – Australian aboriginal word for split or broken open (dorsal groove on segment X).

Remarks. Hydrobiosella bandabanda shows slight variation among the 21 specimens collected from 7 localities in eastern-central and north-eastern Victoria (latitudinal range 36°52'– 37°51'S).