Agmina taoensis, 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 taoensis sp. nov. Figs 190-194

Diagnosis.

Agmina taoensis sp. nov. resembles A. scopula sp. nov. in several genitalic characters, particularly the shape of the inferior and superior appendages. Agmina taoensis sp. nov. is distinguished from A. scopula sp. nov. by the much shorter sternal processes that are apically rounded in ventral view, and the parameres lack clusters of stout mesally and posteriorly orientated setae.

Etymology.

Taoensis, referring to Cascade de Tao, the type locality of the species.

Material examined.

Holotype: New Caledonia - Province Nord • ♂; 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; MNHN.

Measurements.

Fore wing length 3.2 mm (N = 1). Total length of genitalia: 0.4 mm.

Description.

Genitalia: In lateral view, segment IX rounded triangular, apex located at mid-height of genitalia; in ventral view anterior incision widely and shallowly rectangularly shaped. Sternal processes, lateral view, with half circular, with almost straight dorsal margin and strongly convex ventral margin; in ventral view, almost equally wide along their length, with rounded apex, straight and diverging along their length. Tergum X in lateral view almost rectangular, with dorsally orientated process at anterior corner; slightly shorter than high; in dorsal view, mesally separate, mesal margin almost straight. Parameres slender, starting below anterior end of tergum X, almost straight till mid-height of basis of superior appendage, bending slightly ventrally before curving into posteroventral margin; in dorsal view, separated along their length, orientated posterad, equally narrow along their length, mesal lobe with setae present before superior appendage, fusing with superior appendage without long row of short megasetae. Superior appendages, in lateral view, half circular, with almost straight dorsal margin and strongly convex ventral margin; in dorsal view slightly widening along their length, each with rounded apex. Inferior appendages, in lateral view, with basal part almost rectangular, expanded into a prominent dorsally curving process being pointed apically; in ventral view almost diamond-shaped with sharply triangular lateral corners; with deep and narrow posterior incision, posterior branches orientated posteriorly and slightly diverging. Phallus, in lateral view slightly curving posteriorly at basis before sub-straight posterior main part; in ventral view vase shaped, with basal part almost double as wide as posterior part.

Additional information.

This species was referred to as "sp. 6" in Espeland and Johanson (2010a).

Figures

Figures 190 - 194. Agmina taoensis sp. nov. male holotype 190 genitalia, left lateral view 191 genitalia, dorsal view 192 genitalia, ventral view 193 phallus, lateral view 194 phallus, ventral view.