Daternomina scissura, Cartwright, 2008

Cartwright, David I., 2008, A review of the Australian species of Ecnomina Kimmins and Daternomina Neboiss (Trichoptera: Ecnomidae), Zootaxa 1774 (1), pp. 1-76 : 28-30

publication ID	https://doi.org/ 10.11646/zootaxa.1774.1.1
DOI	https://doi.org/10.5281/zenodo.5124147
persistent identifier	https://treatment.plazi.org/id/0749822F-FFF0-6024-6AE7-CBBACB48A892
treatment provided by	Felipe
scientific name	Daternomina scissura
status	sp. nov.

Treatment

Daternomina scissura sp. nov.

Figures 52–54 View FIGURES 52–54 , 62 View FIGURES 55–62

Diagnosis. Daternomina scissura resembles D. ikathan and D. bifida in the general shape of the inferior appendages in ventral view, but differs in the following fine detail: in ventral view, the inferior appendages length is less than the width, with a pair of relatively broad, rounded apices; in lateral view, sub-trapezoidal with parallel sides.

Description. Head pale, body and wings brown; wings similar to D. irrorata ( Fig. 1 View FIGURES 1–6 ) except fork 2 nygma absent. Forewing length about 3.0–3.2 times width: male 3.9–4.1 mm, female 4.5 mm. Forewing fork 2 relatively long, sessile, about 1.4–1.6 times length of fork 3; fork 3 relatively long, with footstalk, fork between 2.1–3.8 times length footstalk, footstalk between 1.3–2.6 times length cross-vein m; r-m and m separated at fork 3 by about 1.0–1.3 times length of cross-vein m; fork 4 shorter than fork 3; fork 5 long, about 1.8 times length of fork 4. Hindwing length about 3.1–3.3 times width, fork 2 sessile, length about 1.6–1.8 times length of fork 3.

Male. Tergum X membranous, short ( Fig. 54 View FIGURES 52–54 ). Superior appendages laterally compressed; in lateral view robust, sub-rectangular, length about 2.5 times width ( Fig. 52 View FIGURES 52–54 ); in dorsal view, relatively slender, length about 4 times width, with row of small processes on mesal margin in distal half, each with apical spiny setae ( Fig. 54 View FIGURES 52–54 ); two pairs of processes at base of superior appendages, a more dorsal, longer, straighter pair with small spines distally and a more ventral, shorter incurved pair. Phallus simple, tube-like, with several spines embedded subapically; with a single, down-curved process (phallic guide) arising from near the base of the inferior appendages ( Fig. 52 View FIGURES 52–54 ). Inferior appendages robust, strongly dorso-ventrally flattened, slightly shorter than superior appendages; in ventral view fused in basal quarter to form a single plate, distal three quarters separated narrowly by a deep mesal split, with pair of broadly rounded apices ( Fig. 53 View FIGURES 52–54 ); in lateral view robust, length about 2.5 times width, sub-trapezoidal, with parallel sides, narrowed at distal third ( Fig. 52 View FIGURES 52–54 ).

Female. Genitalia with a pair of large, semi-triangular, narrowly separated ‘tongue-shaped’ lobes on sternite VIII ( Fig. 62 View FIGURES 55–62 ).

Holotype male: Queensland, Birthday Ck below falls, Mt Spec State Forest , 18°57'S, 146°10'E, 760 m, lt tr., 17 Mar 1994, A.L. Sheldon; ( NMV, T-19639). GoogleMaps

Paratypes: Queensland. 2 males, same loc. and coll., 4 Mar 1994 ; 1 male (specimen CT-468 figured), Williams Ck above mine, Mt Spec State Forest , 18°57'S, 146°10'E, 650 m, lt tr., 24 Apr 1994 GoogleMaps , A.L. Sheldon; 1 male, Echo Ck trib., Mt Spec State Forest , 18°57'S, 146°10'E, 740 m, lt tr., 5 Mar 1994 GoogleMaps , A.L. Sheldon; 1 male, 1 female, Camp Ck trib., Mt Spec State Forest , 18°57'S, 146°10'E, 760 m, lt tr., 14 Nov 1993 GoogleMaps , A.L. Sheldon; 1 male, 1 female (specimen CT-509 figured), same loc. and coll., 4 Mar 1994 ( NMV) .

Other material examined: Queensland. 2 females, Birthday Ck above weir, Mt Spec State Forest , 18°57'S, 146°10'E, 820 m, lt tr., 5 Mar 1994 GoogleMaps , A.L. Sheldon; 2 females, Birthday Ck below falls, Mt Spec State Forest , 18°57'S, 146°10'E, 760 m, lt tr., 14 Apr 1994 GoogleMaps , A.L. Sheldon; 1 female, same loc. and coll., 17 Mar 1994; 31 females, same loc. and coll., 4 Mar 1994; 1 female, Echo Ck trib., Mt Spec State Forest , 18°57'S, 146°10'E, 735 m, lt tr., 7 Nov 1993 GoogleMaps , A.L. Sheldon; 1 female, Echo Ck, Mt Spec State Forest , 18°57'S, 146°10'E, 725 m, lt tr., 5 Mar 1994 GoogleMaps , A.L. Sheldon; 1 female, Camp Ck trib., Mt Spec State Forest , 18°57'S, 146°10'E, 760 m, lt tr., 4 Mar 1994 GoogleMaps , A.L. Sheldon; 1 female, same loc. and coll., 30 Oct 1993; 1 female, same loc. and coll., 21 Nov 1993; 1 female, Running R., Mt Spec State Forest , 18°57'S, 146°10'E, 640 m, lt tr., 16 Mar 1994 GoogleMaps , A.L. Sheldon; 1 male, Yuccabine Ck, Kirrama State Forest , 18°12' S, 146°54'E, Dec 1985 GoogleMaps , R. Pearson and L. Benson ; 1 male, same loc. and coll., 2 Jan–5 Mar 1985; 1 male, 33 km W of Kennedy, University Stn , Apr 1993 , G. Theischinger; 1 male, Cableway base stn, 100m, Bellenden Ker Range , 17–24 Oct 1981 , Earthwatch/ QM.