Hydrobiosella jirrima, 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 : 254

publication ID	https://doi.org/ 10.24199/j.mmv.2012.69.03
DOI	https://doi.org/10.5281/zenodo.10666174
persistent identifier	https://treatment.plazi.org/id/AF02CC77-9745-0B48-E0BD-FCAD962D3648
treatment provided by	Felipe
scientific name	Hydrobiosella jirrima
status	sp. nov.

Treatment

Hydrobiosella jirrima sp. nov.

Figures 14–16 View Figures 8–16 , 41 View Figures 38–43

Holotype. Male. Victoria, McKay Ck, Sassafras Gap (about 36°37'S, 147°47'E), 2 Feb. 1974, A. Neboiss ( NMV, T- 21438). GoogleMaps

Paratypes. Victoria. 3 males (specimen CT-586 figured), collected with holotype GoogleMaps ; 5 males, 1 female (specimen CT-613 figured), Sassafras Gap , 13 Feb 1963, A. Neboiss ; 1 male, Gibbo R., S of Donovan Ck jn, 3 Feb 1974, A. Neboiss ; 1 male, roadside trickles, 1.2km N Sassafras Gap , lt tr., 11 Feb 2010, R. StClair and D. Cartwright ( NMV) .

Diagnosis. Males of Hydrobiosella jirrima can be distinguished from those of other species in the group by the absence of a short dorsal ‘raised ridge’ subapically and slender apex on segment X.

Description. Wings similar to those of H. bandabanda ( Fig. 1 View Figures 1–7 ); length of forewing, male 6.6–7.8 mm, female 6.6 mm.

Male. Segment IX with a weak wide notch in meso-ventral margin ( Fig. 16 View Figures 8–16 ), and an almost rounded distal margin ( Fig. 15 View Figures 8–16 ). Segment X in dorsal view, a ‘tongue-shaped’ process, with almost parallel sides in basal quarter, with a pair of very small acute knobs baso-laterally, tapered distally to a narrow apex, without a central dorsal ridge or groove ( Fig. 14 View Figures 8–16 ); length about 1.9 times width; in lateral view weakly broad-based, tapered slightly in basal two thirds, very slightly bulbous apically ( Fig. 15 View Figures 8–16 ). Phallus generally tube-like, robust, with a pair of narrowly separated sub-apical spines ( Figs 14, 15 View Figures 8–16 ). Inferior appendages in lateral view, robust, with basal segment sub-rectangular, length about 2.3 times maximum width; harpago shorter, length about 0.6 times length basal segment, length about twice maximum width, with broad rounded apex ( Fig. 15 View Figures 8–16 ).

Female. Genitalia typical of genus, with a small projection on sternite IX meso-distally ( Fig. 41 View Figures 38–43 ).

Etymology. Jirrima – Australian aboriginal word for a mountain (type locality Sassafras Gap).

Remarks. Eleven males and one female of Hydrobiosella jirrima have been collected from three sites near the type locality in north-eastern Victoria (latitudinal range 36°37'- 36°39'S).