Daternomina scissura sp. nov. Figures 52–54, 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) 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). Superior appendages laterally compressed; in lateral view robust, sub-rectangular, length about 2.5 times width (Fig. 52); 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); 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). 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); in lateral view robust, length about 2.5 times width, sub-trapezoidal, with parallel sides, narrowed at distal third (Fig. 52). Female. Genitalia with a pair of large, semi-triangular, narrowly separated 'tongue-shaped' lobes on sternite VIII (Fig. 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). 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, 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, 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, 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, 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, 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, A.L. Sheldon; 1 female, Echo Ck, Mt Spec State Forest, 18°57'S, 146°10'E, 725 m, lt tr., 5 Mar 1994, 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, 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, A.L. Sheldon; 1 male, Yuccabine Ck, Kirrama State Forest, 18°12' S, 146°54'E, Dec 1985, 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. Etymology. Scissura- Latin word for split (inferior appendages). Remarks. Daternomina scissura is recorded from many sites in north-eastern Queensland (latitudinal range 17°16'- 18°57' S). Index and checklist of species of Daternomina from Australia

Published as part of Cartwright, David I., 2008, A review of the Australian species of Ecnomina Kimmins and Daternomina Neboiss (Trichoptera: Ecnomidae), pp. 1-76 in Zootaxa 1774 (1) on pages 28-30, DOI: 10.11646/zootaxa.1774.1.1, http://zenodo.org/record/5124133