Agmina monstrosa, 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 monstrosa sp. nov. Figs 84-88

Diagnosis.

Both Agmina monstrosa sp. nov. and A. cerritula sp. nov. have genitalia with inferior appendages that form a very long, slender and dorsally curving process, which make them easily recognised from other Agmina species. Agmina monstrosa sp. nov. is distinguished from A. cerritula sp. nov. by having clearly narrowing sternal processes in lateral view and that the apex is tapering into a long, ventrally orientated tip, and the superior appendages are narrowing posteriorly instead of broadening as in A. monstrosa sp. nov.

Etymology.

Monstrosa, from Latin, meaning monstrous. Named for the weirdly shaped inferior appendage.

Material examined.

Holotype: New Caledonia - Province Sud • ♂; Dumbea River, Branche Sud; 22°08.344'S, 166°30.147'E; 42 m; 3.xi.2003; light trap; loc#006; leg. KA Johanson; MNHN.

Measurements.

Fore wing length 4.8 mm (N = 1). Total length of genitalia: 1.0 mm.

Description.

Genitalia: In lateral view, segment IX sharply triangular anteriorly, apex located ventrally; in ventral view anteriorly oblong. Sternal processes, lateral view, with each apex greatly exceeding apex of superior appendage, robust, widest at mid-length, then tapering along its length, with straight margins, acuminate apex strongly curving posteroventrad; in ventral view, very long, nearly parallel, tapering along their length, posterior third uniformly narrow, with acuminate apex directed mesad. Tergum X in lateral view saddle-shaped, anteriorly semi-triangular with almost straight dorsal margin, slightly longer than superior appendage; in dorsal view, mesally fused, almost rectangular, inner margins forming bell. Parameres starting before tergum X, in lateral view wide at base, then slender, apex complex with multiple branches, possibly forming a loop, reaching apex of superior appendage; in dorsal view, separated, initially converging, then twisting and diverging, slightly widening along their length, apex forming large loop covered by superior appendage. Superior appendages, in lateral view, small, cone-shaped with convex anteroventral margin, slightly shorter than tergum X; in dorsal view very stout, slightly longer than wide, apex rounded, mesally with stout claw-like process directed anteromesad, followed by small triangular process and slightly larger claw-like process. Inferior appendages, in lateral view, slender, longer than sternal process, initially directed posteroventrad, then widely curving, forming a very wide U-shape, with acuminate apex directed almost dorsad posterodorsally of apex of sternal process; in ventral view long, slender, tubular with almost straight margins, longer than sternal processes, apex acuminate. Phallus, in lateral view shorter than segment IX, slender, tubular, straight, with long spine-like process near anterior end; in ventral view tapering along its length, widening at apex, two large rounded lateral lobes at anterior end.

Additional information.

This species was referred to as "sp. 7" in Espeland and Johanson (2010a).

Figures

Figures 84 - 88. Agmina monstrosa sp. nov. male holotype 84 genitalia, left lateral view 85 genitalia, dorsal view 86 genitalia, ventral view 87 phallus, lateral view 88 phallus, ventral view.