Agmina amieuensis, 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 amieuensis sp. nov. Figs 151-155

Diagnosis.

In ventral view, the inferior appendages of Agmina amieuensis sp. nov. form a narrow plate with a posteroapical incision laterally flanged by a row of small setae, similar to those of A. complexa sp. nov., A. guttata sp. nov., and A. spina sp. nov. Agmina amieuensis sp. nov. also have very short sternal processes in lateral view, as also present in A. guttata sp. nov. and A. spina sp. nov. Agmina amieuensis sp. nov. is distinguished by the shape of the sternal process in ventral view, which is oval, almost drop-shaped.

Etymology.

Amieuensis, named for Réserve Spéciale de faune du Col d’Amieu et Table Unio, the type locality of the species.

Material examined.

Holotype: New Caledonia - Province Sud • ♂; Réserve Spéciale de faune du Col d’Amieu et Table Unio, branch of Fa Tööiri Stream; 21°34.844'S, 165°49.677'E; loc#155 (25-2001); Malaise trap; 30.xi-5.xii.2001; leg. KA Johanson, T Pape & B Viklund; MNHN.

Paratypes: New Caledonia - Province Nord • 1 ♂; Mt. Panié, Riv. Padyéém; 400 m; 22-28.xi.2001; Malaise trap; 22-28.xi.2001; 20°34.122'S, 164°48.147'E; loc#146 (16-2001); leg. KA Johanson, T Pape & B Viklund; NHRS; Province Sud • 1 ♂; Plateau de Dogny, source of Dogny River, ca, 100 S of loc 046 and nearly 1.0 km SE summit of Platou; 21.62095S, 165.88072E; 917 m; 25.xi-16.xii.2003; Malaise trap; loc#047; leg. KA Johanson; NHRS; • 1 ♂; Monts des Koghis, ca 300 m S Koghi Restaurant; 22.18288S, 166.50245E; 427 m; 2-16.xi.2003; Malaise trap; loc#003; leg. KA Johanson; NHRS; • 1 ♂; Monts des Koghis, ca 300 m S Koghi Restaurant; 22.18288S, 166.50167E; 417 m; 2-16.xi.2003; Malaise trap; loc#004; leg. KA Johanson; NHRS; • 2 ♂; Monts Kwa Ne Mwa, on road between Nouméa and Yaté, 2.0 km E Pic Mouirange; 22°12.356'S, 166°40.798'E; 220 m; 7-16.xi.2003; Malaise trap; loc#014; leg. KA Johanson; NHRS.

Measurements.

Fore wing length 2.8-3.7 mm (N = 7). Total length of genitalia: 0.4 mm.

Description.

Genitalia: In lateral view, segment IX widely bell-shaped, apex located medially; in ventral view anteriorly oval. Sternal processes, lateral view, with broad structure with semi-acute apex located ventrally, ventral margin slightly concave; in ventral view, slightly diverging, tapering along their length, apex rounded. Tergum X trapezoid with concave anterior margin; in dorsal view, mesally separate, longer than wide, inner margin convex, posterior margin slightly concave. Parameres originating at tergum X, in lateral view initially slender, widening to a folded, twisting, sheet-like structure at apex; in dorsal view, slender, gently widening along their length, initially diverging, posterior half converging, apex rounded, club-shaped. Superior appendages, in lateral view, triangular with dorsal margin convex, apex acute directed posteromesad, spine-like mesal process curving downwards with apex directed anteromesad; in dorsal view longer than wide, outer margin sigmoid, inner margin convex, two apices directed postero mesad, mesal process directed anteromesad posteriorly of both apices. Inferior appendages, in lateral view, with bifurcated anterior half, ventral process running parallel with, and exceeding ventral margin of sternal process, posterior part forming a single narrowing lobe with rounded apex exceeding posterior margin of sternal process; in ventral view posterior half forming lobe-like structure narrowing towards rounded apex. Phallus, in lateral view almost as long as segment IX, tubular, straight; in ventral view wider anteriorly, tubular.

Additional information.

This species was referred to as "sp. 18" in Espeland and Johanson (2010a).

Figures

Figures 151 - 155. Agmina amieuensis sp. nov. male holotype 151 genitalia, left lateral view 152 genitalia, dorsal view 153 genitalia, ventral view 154 phallus, lateral view 155 phallus, ventral view.