Hydrobiosella tarrong, 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 : 253

publication ID	https://doi.org/ 10.24199/j.mmv.2012.69.03
DOI	https://doi.org/10.5281/zenodo.10666168
persistent identifier	https://treatment.plazi.org/id/AF02CC77-9744-0B49-E0A2-FAFA960832A7
treatment provided by	Felipe
scientific name	Hydrobiosella tarrong
status	sp. nov.

Treatment

Hydrobiosella tarrong sp. nov.

Figures 8–10 View Figures 8–16 , 40 View Figures 38–43

Holotype. Male. Victoria, Cement Ck nr Warburton (about 37°43'S, 145°43'E), 26 Mar 1958, A. Neboiss ( NMV, T-21425). GoogleMaps

Paratypes. Victoria. 2 males (specimen CT-609 figured) , 3 females (specimen CT-610 figured), collected with holotype GoogleMaps ; 1 male, same loc. and coll., 27 Mar 1972 ( NMV) .

Diagnosis. Males of Hydrobiosella tarrong can be separated from those of other species in the group by the slender apical half of segment X, in lateral view and the inferior appendages with harpago dilated slightly in apical half.

Description. Wings similar to those of H. bandabanda ( Fig. 1 View Figures 1–7 ); length of forewing: male 7.8–9.0 mm, female 8.5–9.0 mm.

Male. Segment IX with a shallow, wide notch medially on distal margin ( Fig. 10 View Figures 8–16 ). Segment X in dorsal view, a ‘tongue-shaped’ process, with sides almost parallel in basal half, with a pair of very small knobs baso-laterally, tapered distally to a slightly rounded apex, without a central dorsal ridge or groove ( Fig. 8 View Figures 8–16 ); length about 1.7 times width; in lateral view broad-based, narrowed strongly at midpoint, slender with almost parallel sides in distal half ( Fig. 9 View Figures 8–16 ). Phallus generally tube-like, robust, slightly truncate, with a pair of sub-apical spines and two groups of chitinous spines basally ( Figs 8, 9 View Figures 8–16 ). Inferior appendages in lateral view, robust, with basal segment sub-rectangular, slightly angular meso-dorsally, length about 1.8- 1.9 times maximum width; harpago shorter, length about 0.8 times length basal segment, length about 1.9 times maximum width, with slightly dilated, broadly rounded apex ( Fig. 9 View Figures 8–16 ).

Female. Genitalia typical of genus, with a small projection on sternite IX meso-distally ( Fig. 40 View Figures 38–43 ).

Etymology. Tarrong – Australian aboriginal word for teeth (pair of ‘chitinous spines‘ in middle of phallus).

Remarks. Four male and three female specimens of Hydrobiosella tarrong have been collected from the type locality in eastern-central Victoria (latitude 37°43'S).