Agmina parallela, 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 parallela sp. nov. Figs 217-221

Diagnosis.

Agmina parallela sp. nov. unique among Agmina species in the superior appendage that in lateral view is almost as large as segment IX and segment X combined, and is rounded club-shaped ventrally. In addition, the inferior appendages form a long ventral plate that is almost parallel-sided along its length.

Etymology.

Parallela, derived from parallel, referring to the inferior appendages having almost parallel-sided lateral margins in ventral view.

Material examined.

Holotype: New Caledonia - Province Nord • ♂; Ponandou Tiôgé River at Kögi, 3.9 km SSW Touho; 20°49.043'S, 165°13.551'E; 25 m; 26.xii.2003; light trap; loc#100; leg. KA Johanson; MNHN.

Measurements.

Fore wing length 4.5 mm (N = 1). Total length of genitalia: 0.7 mm.

Description.

Genitalia: In lateral view, segment IX widely rounded anteriorly, almost trapezoid, apex located dorsally; in ventral view anteriorly with widely and shallow U-shaped incision. Sternal processes, lateral view, with very large, downwardly club-shaped, posterior and anterior margins almost parallel, apex widely rounded; in ventral view, absent. Tergum X deeply concave dorsally, posteriorly expanded dorsad into pointed triangular, in lateral view approx. as long as high; in dorsal view, forming small plates widely separated mesally. Parameres dorsally membranous, ventrally forming strongly sclerotised spines reaching to half-length of superior appendages; in lateral view slightly curving posteriorly; in dorsal view, separate and re-curved as basis, needle-shaped, almost straight after basis and pointing mesally. Superior appendages, in lateral view, very large, downwardly club-shaped, posterior and anterior margins almost parallel, apex widely rounded; in dorsal view narrow at basis, widening into mesal plates at mid-length, small mesally orientated tooth present at basis; row of long apical megasetae situated on inner surface and orientated mesally. Inferior appendages, in lateral view, with posterad orientated long dorsal branch with pointed apex; dorsal branch widely separated from ventral branch; ventral branch running parallel with dorsal branch, approx. double the width of dorsal branch and gently curving dorsally along its length; apex narrowly rounded; in ventral view rectangular plate-like ventral branch hiding dorsal branches, dorsal branches orientated posteriorly, each uniformly narrowing into acute apex. Phallus, in lateral view as long as segment IX, slender and slightly curving upwards; in ventral view equally wide along its length, double as wide as high.

Additional information.

This species was referred to as "sp. 51" in Espeland and Johanson (2010a).

Figures

Figures 217 - 221. Agmina parallela sp. nov. male holotype 217 genitalia, left lateral view 218 genitalia, dorsal view 219 genitalia, ventral view 220 phallus, lateral view 221 phallus, ventral view.