Agmina guttata, 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 guttata sp. nov. Figs 146-150

Diagnosis.

In ventral view, the inferior appendages of Agmina guttata 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. amieuensis sp. nov., and A. spina sp. nov. Agmina guttata sp. nov. also have very short sternal processes in lateral view, as also present in A. amieuensis sp. nov. and A. spina sp. nov. Agmina guttata sp. nov. is distinguished from the similar species by the shape of the sternal process in ventral view, which is oval, almost drop-shaped.

Etymology.

Guttata, from Latin, meaning drop-shaped. Referring to the shape of the sternal process in ventral view.

Material examined.

Holotype: New Caledonia - Province Sud • ♂; Haute Yaté fauna reserve, 1760 m S bridge Pont Perignon, 50 m upstream bridge over stream; 22.14954S, 166.701211E; 180 m; 14.xii.2003-13.i.2004; Malaise trap; loc#081; leg. KA Johanson; MNHN.

Paratypes: New Caledonia - Province Sud • 2 ♂; Réserve spéciale de faune de la haute Yaté, along road on southern part of Marais de la Rivière Blanche, stream draining to Marais de la Rivière Blanche, 2.25 km SW Pont Pérignon; 180 m; 6-16.xi.2003; Malaise trap; loc#010a; leg. KA Johanson; NHRS; • 1 ♂; Rivière Ouanéoue, at bride crossing road to Koghi Mountains, ca. 1.5 km from road RT1 Nouméa-Dumbea; 22°10.861'S, 166°29.531'E; 11.xi.2003; light trap; loc#024a; leg. KA Johanson; NHRS; • 1 ♂; Réserve spéciale de faune de la haute Yaté, along road on southern part of Marais de la Rivière Blanche, stream draining to Marais de la Rivière Blanche, 1.35 km S Pont Pérignon; 22°08.496'S, 166°42.152'E; 180 m; 6-16.xi.2003; Malaise trap; loc#009a; leg. KA Johanson; NHRS; • 1 ♂; Réserve spéciale de faune de la haute Yaté, along road on southern part of Marais de la Rivière Blanche, stream draining to Marais de la Rivière Blanche, 3.7 km SW Pont Pérignon; 22°09.327'S, 166°40.841'E; 180 m; 6-16.xi.2003; Malaise trap; loc#013; leg. KA Johanson; NHRS; • 1 ♂; W slope Mt. Ningua, Kwé Néco Stream, at Camp Jacob, 3.7 km WNW summit of Mt. Ningua, on Boulo-Thio Road, ca. 50 m upstream road; 21°43.613'S, 166°06.567'E; 150 m; 29.xi-12.xii.2003; Malaise trap; loc#054; leg. KA Johanson; NHRS; Province Nord • 2 ♂; 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; • 1 ♂; Wé Caot Stream, draining NNE side of Mt. Panié, 0.9 km NW Cascade de Tao; 20°33.311'S, 164°48.064'E; 18.xii.2003; light trap; loc#084; leg. KA Johanson; NHRS.

Measurements.

Fore wing length 2.4-3.8 mm (N = 11). Total length of genitalia: 0.3 mm.

Description.

Genitalia: In lateral view, segment IX almost rectangular, apex located dorsally; in ventral view anteriorly slightly undulating, almost straight. Sternal processes, lateral view, with straight, gently tapering along their length, apex semi-acute; in ventral view, anterior half robust, diverging, of equal width throughout their length, abruptly narrowing slightly posteriorly of mid-length, posterior part club-shaped with rounded apex. Tergum X semi-rectangular with anterior margin concave and posterior margin convex; in dorsal view, mesally fused, forming rounded lobe with shallow, wide notch at apex. Parameres originating before tergum X, in lateral view long, slender, initially trifurcated, then slender, tubular directed posterodorsad, forming complex looped structure at apex; in dorsal view, separated, initially converging, then diverging, straight, slightly widening along their length, thin, whip-like apex curving anterolaterad. Superior appendages, in lateral view, rounded, rectangular with truncated apex, as long as tergum X; in dorsal view parallel, curving mesally towards apex, anterior end triangular, lateral margin convex, mesal margin straight, claw-like mesoanterad directed process at apex. Inferior appendages, in lateral view, forming single slightly narrowing process with rounded apex exceeding lateral margin of sternal process; in ventral view slender, anterior end widely triangular, lateral margins parallel anteriorly, slightly converging posteriorly, apex with two spine-like, thin posterior processes. Phallus, in lateral view as long as segment IX, tubular, straight; in ventral view wider anteriorly, tubular.

Additional information.

This species was referred to as "sp. 31" in Espeland and Johanson (2010a).

Figures

Figures 146 - 150. Agmina guttata sp. nov. male holotype 146 genitalia, left lateral view 147 genitalia, dorsal view 148 genitalia, ventral view 149 phallus, lateral view 150 phallus, ventral view.