Wellsomina gumurr Cartwright, 2010, sp. nov.
Creators: name: Cartwright, David I.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Ecnomidae
Wellsomina
Wellsomina gumurr

description: Wellsomina gumurr sp. nov.
Figs 30–32, 49
Diagnosis. Males of this species are similar to Wellsomina saeta and W. furca, having fused inferior appendages with prominent shoulders, but the superior appendages have short apical setae, and the fused inferior appendages have a more deeply incised central notch or split.
Description. Head, body and wings light brown; wings similar to those of W. stuarti (Fig. 7), length of forewing: male 2.5–2.8 mm, female 2.6–2.8 mm. Wing venation: forewing length about 3.5 times width, each with forks 2, 3, 4 and 5 present; fork 2 relatively short, fork 2 footstalk relatively long, length about 2.0–2.3 times length of cross-vein r -m, length of fork 2 about 1.6–2.0 times length of fork 3; fork 3 very short, length of fork 3 about 0.5–0.8 times length of footstalk, footstalk of fork 3 very long, length about 3.6–5.0 times length of cross-vein m. Hind wing length about 4 times width, each with forks 2, 3 and 5 present; short, fork 2 footstalk relatively long, length about 4.2–5.0 times length of cross-vein r -m.
Male. Tergum X membranous (Fig. 32). Superior appendages relatively short, laterally compressed, each with 1 or 2 robust spine-like setae dorsoapically (Figs 30–32); in lateral view, broad basally, distally tapered slightly, broad, truncate process dorsally. Phallus simple, tube-like, with retracted elongate spine(s) ventrally (Fig. 30). Inferior appendages strongly depressed, in ventral view, fused in basal 2/3rds, with prominent shoulders laterally and pair of digitiform processes distally, separated by deep V shaped notch (Fig. 31); in lateral view, relatively slender, narrowed slightly in distal 1/3rd (Fig. 30).
Female. Genitalia with abdominal sternite VIII relatively broad, basally with mesal process slender, digitiform; segment IX relatively short, broad-based, tapered slightly in distal 1/4th, segment X relatively long, slender bearing 1 pair of small cerci (Fig. 49).
Holotype male: Northern Territory, ARRS S. Alligator R. above Fisher Ck jn (about 13°34'S, 132°35'E), blue lt tr., 24 May 1988, PS and AW (NMV, T- 20802).
Paratypes: Northern Territory. 1 male, ARRS S. Alligator R. below BHP camp, blue lt tr., 25 May 1988, PS and AW; 1 male, Kambolgie Ck, 6V lt tr., 25–26 May 1988, AW and PS; 1 male, 5 females (specimen CT- 534 figured), SAR site 1, 30 Sep 1988, [collector not specified]; 1 male (specimen CT-469 figured), Jim Jim Falls campsite, 13°16'S, 132°49'E, 13 Aug 1996, I. Edwards; 1 male, ARRS Radon Springs, 6V lt tr., 18–19 May 1988, AW and PS; 2 males, Graveside Ck, lt tr., 18 Jul 1988, PD (NMV).
Other material examined: Northern Territory. 4 males, 3 females, ARRS Bowerbird Billabong, 12°47'S, 133°02'E, 1 Oct 1988, PD; 6 males, 5 females, Graveside Gorge, 18 Jul 1988, PD; 2 males, 4 females, SAR site 1, Oct 1988, PD (NMV).
Etymology. Gumurr - Northern Territory Aboriginal word for escarpment (locality- the Alligator Rivers Region).
Remarks. Wellsomina gumurr is recorded from the Alligator Rivers Region (ARR) of the Northern Territory (latitudinal range 12°45'– 13°44'S).
description: Published as part of Cartwright, David I., 2010, Descriptions of 2 new genera and 13 new species of caddisflies from Australia (Trichoptera: Ecnomidae), pp. 1-21 in Zootaxa 2415 on page 15, DOI: 10.5281/zenodo.194387