Agmina rocheta, Espeland & Sjöberg & Johanson, 2020

Espeland, Marianne, Sjoeberg, Tin & Johanson, Kjell Arne, 2020, Description of 47 new species of the New Caledonian endemic caddisfly genus Agmina Ward & Schefter (Trichoptera, Ecnomidae), ZooKeys 956, pp. 49-162 : 49

Agmina rocheta sp. nov. Figs 10-14

Diagnosis.

Agmina rocheta sp. nov. is distinguished from the other Agmina species by the presence of a pair of drop-shaped superior appendages, in lateral view, each with a very long and curved mesal process reaching as far posteriorly and above the apex of the superior appendages. It particularly resembles A. nodosa Ward, 2003 but in A. nodosa the sternal processes are simple while in A. rocheta sp. nov. they are bifurcated.

Etymology.

Rocheta (noun, feminine), from Latin, meaning rocket. Named for the rocket-shaped phallus in ventral view.

Material examined.

Holotype: New Caledonia - Province Nord • ♂; Wan Pwé On Stream, draining NNE side of Mt. Panié, 3.9 km NW Cascade de Tao; 20°31.820'S, 164°47.016'E; 18.xii.2003; light trap; loc#085; leg. KA Johanson; MNHN.

Paratype: New Caledonia - Province Nord • 1 ♂; same data as for holotype; NHRS.

Type locality.

New Caledonia, Province Nord, Mt. Panié.

Measurements.

Fore wing length 4.1-4.3 mm (N = 2). Total length of genitalia: 0.4 mm.

Description.

Genitalia: In lateral view, segment IX apex located medially, dorsal margin straight, abruptly turning downwards at apex, anterior margin convex; in ventral view anteriorly widely U-shaped. Sternal processes, lateral view, with each apex not exceeding posterior apex of tergum X, slender, apical 2/3 straight, spine-like with blunt end; in ventral view, slender, straight, apical 2/3rd parallel. Tergum X very large, in lateral view longer than superior appendage, dorsal margin almost straight, ventral margin convex; in dorsal view, mesally separate, semi-triangular, tapering posteriorly. Parameres starting before tergum X; in lateral view, long, slender, not exceeding tergum X, apical half curving upwards; in dorsal view, fused at base, apical 2/3rd separated, each with truncated apex, narrowing along their length, lateral margins straight, mesal margins slightly concave. Superior appendages, in lateral view, shorter than tergum X, tapering along its length, apex slightly curved upwards, dorsal and ventral margin convex, with posterad, long, spine-like mesal process present on meso-ventral margin exceeding posteriorly the main branch; in dorsal view almost three times longer than wide, converging posteriorly, apex truncated. Mesal processes long, directed mesad at base, crossing each other, then strongly curving posteriorly. Inferior appendages, in lateral view, with posterad orientated, long, tubular dorsal branch at base slightly curving ventrally, then straight, apex blunt; tubular ventral branch 2/3rd the length of dorsal branch, slightly curving upward towards dorsal branch, apex blunt. in ventral view broader at base, with long, slender, almost straight posteriorly orientated dorsal branches, ventral branch forming long central lobe, slightly tapering towards rounded apex. Phallus, in lateral view much shorter than segment IX, straight; in ventral view rocket-shaped.

Additional information.

This species was referred to as "sp. 48" in Espeland and Johanson (2010a).

Figures

Figures 10 - 14. Agmina rocheta sp. nov. male holotype 10 genitalia, left lateral view 11 genitalia, dorsal view 12 genitalia, ventral view 13 phallus, lateral view 14 phallus, ventral view.