Wellsomina mattina, Cartwright, David I., 2010

Cartwright, David I., 2010, Descriptions of 2 new genera and 13 new species of caddisflies from Australia (Trichoptera: Ecnomidae), Zootaxa 2415, pp. 1-21 : 18-20

publication ID	https://doi.org/ 10.5281/zenodo.194387
DOI	https://doi.org/10.5281/zenodo.6202168
persistent identifier	https://treatment.plazi.org/id/AA598020-187C-FF84-9DE8-3E89FB511B58
treatment provided by	Plazi
scientific name	Wellsomina mattina
status	sp. nov.

Treatment

Wellsomina mattina sp. nov.

Figs 42–44 View FIGURES 36 – 44 , 53 View FIGURES 45 – 53

Diagnosis. Wellsomina mattina can be distinguished from congeners by the small, round knob-like dorsal lobe on each superior appendage, and in lateral view by the extremely slender inferior appendages.

Description. Head, body and wings fawn, abdomen paler ventrally; wings similar to those of W. stuarti ( Fig. 7 View FIGURES 7 – 11 ), length of forewing: male 2.5–2.6 mm, female 2.7–3.1 mm. Wing venation: forewing length about 3.7 times width, each with forks 2, 3, 4 and 5 present; fork 2 relatively short, fork 2 footstalk relatively long, length about 2.4–3.0 times length of cross-vein r -m, length of fork 2 about 1.9–2.1 times length of fork 3; fork 3 very short, length of fork 3 about 0.5–0.6 times length of footstalk, footstalk of fork 3 very long, length about 4.7–5.6 times length of cross-vein m. Hind wing length about 4–4.5 times width, each with forks 2, 3 and fork 5 present, all short; fork 2 footstalk relatively long, length about 4.1–4.5 times length of cross-vein r - m.

Male. Tergum X membranous. Superior appendages complex: in dorsal view each with rounded dorsomesal lobe with 5 spiny setae mesally, ventrodistal lobe with several relatively long spiny setae apically ( Fig. 44 View FIGURES 36 – 44 ); in lateral view superior appendages robust, each with rounded dorsal lobe separated from curved distal lobe. Phallus simple, tube-like ( Fig. 42 View FIGURES 36 – 44 ). Inferior appendages strongly depressed, in ventral view fused in basal 3/4ths, rounded laterally, with pair of digitiform processes distally, separated by narrow notch ( Fig. 43 View FIGURES 36 – 44 ); in lateral view very slender, slightly upturned in distal 1/4th ( Fig. 42 View FIGURES 36 – 44 ).

Female. Genitalia with abdominal sternite VIII relatively broad, basally with relatively long, slender digitiform mesal process; segment IX relatively short, broad-based, tapered distally, segment X relatively long, slender with 1 pair of small cerci ( Fig. 53 View FIGURES 45 – 53 ).

Holotype male: Northern Territory, Katherine River Gorge Nat. Pk (about 14°29'S, 132°26'E), 13 Aug 1979, J. Blyth ( NMV, T- 20850).

Paratypes: 10 males (specimen PT-1084 figured), 12 females (specimen PT-1083 figured), collected with holotype ( NMV).

Other material examined: Western Australia. 18 males, E. Charnley R., 2 km SW Rolly Hill, CALM site 25/2, 16°22'S, 125°12'E, 16–20 Jun 1988, I.D. Naumann ( ANIC); 2 males, Drysdale R., 15°02'S, 126°55'E, 3–8 Aug 1979, I.F.B. Common and M.S. Upton ( ANIC).

Etymology. Mattina - Australian Aboriginal word for double pointed club (inferior appendages). Remarks. Wellsomina mattina has been recorded from the Katherine River Gorge, Northern Territory and the Kimberley Region of northern Western Australia (latitudinal range 14°29'– 16°22'S).