Agmina falx, 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 falx sp. nov. Figs 140-145

Diagnosis.

This species is easily distinguished from other Agmina species in lateral view by the sickle shaped sternal processes, each being slightly curved ventrally and with a sharp apex. It also has a large, claw-like structure apically in the superior appendages and pointed megasetae at the apex of the parameres.

Etymology.

From Latin falx (noun, feminine), meaning sickle. Named for the sickle-shaped sternal process in lateral view.

Material examined.

Holotype: New Caledonia - Province Sud • ♂; 2.8 km ENE Bopope, at site where Rivière Kövé Tamè enters Rivière Oua Mendiou, 100 m S RPN2 Koné-Poindimié; 20°54.455'S, 165°06.300'E; 78 m; 14.i.2003; light trap; loc#119; leg. KA Johanson; MNHN.

Measurements.

Fore wing length 3.1 mm (N = 1). Total length of genitalia: 0.6 mm.

Description.

Genitalia: In lateral view, segment IX rounded triangular with slightly upturned apex anteriorly, apex located ventrally; in ventral view anteriorly U-shaped. Sternal processes, lateral view, with sickle-shaped, curving downwards posteriorly, on dorsal margin rounded notch at mid-length; in ventral view, slender, parallel, spine-like with acute apex. Tergum X small, oblong with drawn out, ventroanterad corner, wider than long; in dorsal view, mesally fused, short, not much wider than mesal bridge, posterior margins slightly convex. Parameres originating before tergum X, in lateral view tubular, slightly wider anteriorly, then of equal width along its length, thin, tubular, blunt, process on ventral margin before mid-length; in dorsal view, anterior half tubular, nearly parallel, posterior part folding in on itself, apex truncated, mesally with long, straight, megasetae directed mesad. Superior appendages, in lateral view, curving with rounded, slightly dentate apex, dorsally with long, downwards-curving, spine-like process, exceeding main appendage; in dorsal view irregular, equally wide as high with almost straight posterolateral process, with dentate lateral margin, above this with posteromesad curving acute, spine-like process. Inferior appendages, in lateral view, forming single rounded, rhomboid process with rounded apex; in ventral view short, slender with convex margin, apex with two thin spine-like posterior processes with acute apex. Phallus, in lateral view much shorter than segment IX, tubular; in ventral view wider posteriorly, with looped lateral lopes anteriorly.

Additional information.

This species was referred to as "sp. 13" in Espeland and Johanson (2010a).

Figures

Figures 140 - 145. Agmina falx sp. nov. male holotype 140 genitalia, left lateral view 141 genitalia, dorsal view 142 superior appendage, underside in dorsal view 143 genitalia, ventral view 144 phallus, lateral view 145 phallus, ventral view.