Daternomina trulla (Neboiss)

Cartwright, David I., 2008, A review of the Australian species of Ecnomina Kimmins and Daternomina Neboiss (Trichoptera: Ecnomidae), Zootaxa 1774 (1), pp. 1-76: 16-17

publication ID 10.11646/zootaxa.1774.1.1


persistent identifier

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scientific name

Daternomina trulla (Neboiss)

comb. nov.

Daternomina trulla (Neboiss)   comb. nov.

Figures 22–24 View FIGURES 19–24

Ecnomina trulla Neboiss, 1982: 295   , figs 54–56. — Neboiss 1986: 156.

Diagnosis. Daternomina trulla   resembles D. ulltra   in possessing rounded apices on the superior appendages and inferior appendages which are short, fused basally and curved laterally, but differs in having a relatively shallow notch distally, dividing at most the distal quarter and a weakly down curved phallic guide.

Description. (Revised after Neboiss 1982). Head, body and wings brown; wings similar to D. irrorata   ( Fig. 1 View FIGURES 1–6 ). Forewing length about 3 times width: male 4.0– 4.4 mm. Forewing fork 2 relatively long, sessile, length about 1.7–2.0 times length of fork 3, nygma present; fork 3 relatively long, length about 1.8–2.7 times length footstalk, footstalk length about 1.4–2.3 times length cross-vein m; r-m and m displaced at fork 3 by about 1.7–1.8 times length cross-vein m; fork 4 length similar to fork 3; fork 5 long, length about 1.8 times length of fork 4. Hindwing length about 3 times width; fork 2 with short footstalk, length footstalk 0.9–1.2 times length cross-vein r-m, fork 2 length about 1.4–1.7 times length of fork 3.

Male. Tergum X membranous ( Fig. 24 View FIGURES 19–24 ). Superior appendages slightly laterally compressed; in lateral view, broad, length about 2.5 times width ( Fig. 22 View FIGURES 19–24 ); in dorsal view, length about 3.5 times width, with two groups of spines on inner surface ( Fig. 24 View FIGURES 19–24 ). Phallus generally tube-like with a pair of elongate processes dorsally; with a single relatively long and slender, curved process (phallic guide) arising from near the base of the inferior appendages ( Fig. 22 View FIGURES 19–24 ). Inferior appendages strongly dorso-ventrally compressed; in ventral view, fused, robust, rounded sided, with a short, narrow V-shaped notch distally ( Fig. 23 View FIGURES 19–24 ); in lateral view, relatively straight ( Fig. 22 View FIGURES 19–24 ).

Female. Unknown.

Material examined: Western Australia. Holotype male, Napier Creek , 22 km NE of Albany, 29 Nov 1978   , A.N. ( NMV, T- 6242, specimen PT-628 figured). Other material. 1 male, Seldom Seen Brook, Jarrahdale, Stn 7, 2 Mar 1983   , S. Bunn; 1 male, same locality and collector, 6 Jan 1984   ; 1 male, same locality and collector, 8 Feb 1984   .

Remarks. Four male specimens of Daternomina trulla   have been collected from two sites in southern Western Australia (latitudinal range 31°14'- 34°50'S). Neboiss’s (1982) figures have been redrawn to allow direct comparisons and to accompany the description that is revised in light of new interpretations of Daternomina   genitalic structures.


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Daternomina trulla (Neboiss)

Cartwright, David I. 2008

Ecnomina trulla

Neboiss, A. 1986: 156
Neboiss, A. 1982: 295