Agmina semicampanula, 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 semicampanula sp. nov. Figs 69-73

Diagnosis.

This species is very similar to A. campanula sp. nov., from which it is distinguished by the U-shaped anterior margin of segment IX in ventral view; the smoothly curved sternal process in lateral view; and, in dorsal view, the pair of parameres that have rounded instead of sharply angled posteromesal corners.

Etymology.

Named for the similarity to the closely related species Agmina campanula sp. nov.

Material examined.

Holotype: New Caledonia - Province Sud • ♂; Mt. Dzumac, source stream of Ouinne River, near crossing point to mountain track; 22°02.073'S, 166°28.460'E; 810 m; 18.xi-4.xii.2003; Malaise trap; loc#030; leg. KA Johanson; MNHN.

Measurements.

Fore wing length 4.1 mm (N = 1). Total length of genitalia: 0.5 mm.

Description.

Genitalia: In lateral view, segment IX triangular anteriorly, apex located dorsally; in ventral view anteriorly widely U-shaped. Sternal process es, lateral view, with each apex almost reaching apex of superior appendage, narrowing along its length, slightly curving downwards, apex acute; in ventral view, robust, anterior half diverging, posterior half parallel, tapering along their length, apex acuminate. Tergum X in lateral view irregularly quadrilateral with concave anterior margin and convex posterior margin, tapering towards posterior, approx. same length as superior appendage; in dorsal view, mesally fused, forming slightly irregular lobes, inner margins forming acuminate triangle. Parameres starting before tergum X, in lateral view long, slender, straight, bifurcating at apex, with dorsal branch orientated sharply dorsad and ventral branch orientated sharply ventrad; in dorsal view, long, slender, straight, slightly converging along its length, slightly diverging and widening at blunt apex. Superior appendages, in lateral view, oblong with anterodorsal tooth, approx. same length as tergum X; in dorsal view stout, almost semi-circular with rounded outer margin, inner margin slightly concave, apex with short, stout, claw-shaped structure directed anteromesad. Inferior appendages, in lateral view, with both branches forming a single posterad orientated, rectangular structure with slightly dentated, truncated, posterior margin; in ventral view semi-bell-shaped, posterior margin slightly convex with shallow teeth. Phallus, in lateral view slightly shorter than segment IX, largely tubular, ventral margin straight; in ventral view tubular with small lateral lobes at anterior end.

Additional information.

This species was referred to as "FP2 Agmina sp. 24" in Espeland and Johanson (2010a).

Figures

Figures 69 - 73. Agmina semicampanula sp. nov. male holotype 69 genitalia, left lateral view 70 genitalia, dorsal view 71 genitalia, ventral view 72 phallus, lateral view 73 phallus, ventral view.