Agmina bleuensis, 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 bleuensis sp. nov. Figs 201-205

Diagnosis.

Agmina bleuensis sp. nov. resembles most other species in the species group, particularly A. touhoensis sp. nov. and A. hamata due to the wide separation of the dorsal and ventral branches of the inferior appendages in lateral view. Agmina bleuensis sp. nov. is distinguished from the two other species by the thicker ventral branch of inferior appendages. In addition, the sternal processes of A. bleuensis sp. nov. is much shorter than in A. touhoensis sp. nov. and A. hamata .

Etymology.

bleuensis , derived from Rivière Bleue, the type locality of the species.

Material examined.

Holotype: New Caledonia - Province Sud • ♂; Rivière Bleue, 2.7 km SSW of summit of Montagne Bleue; 22°05.705'S, 166°38.225'E; loc 139a (loc 4-2001); Malaise trap; 13-16.xi.2001; leg. KA Johanson, T Pape & B Viklund; MNHN.

Paratypes: New Caledonia - Province Sud • 2 ♂; Parc territorial de la Rivière Bleue, Riviere Bleue, 22°05.826'S, 166°38.293'E, loc#127, light trap 6-7.x.2006; leg. KA Johanson & M Espeland; NHRS; • 1 ♂; stream crossing Nouméa-Yaté road immediately W of turnoff to Rivière Bleue Reserve; 22°10.191'S, 166°44.474'E; 162 m; 5.x.2006; light trap; loc#040b; leg. KA Johanson & M Espeland; NHRS; • 1 ♂; stream draining to Rivière des Pirogues 850 m E summit of Mont Imbaah, 5.5 km E Lucky Creek in Plum; 22°16.837'S, 166°42.195'E; 31 m; 1.xii.2003; light trap, loc#060; leg. KA Johanson; NHRS.

Measurements.

Fore wing length 3.6-4.9 mm (N = 5). Total length of genitalia: 0.5 mm.

Description.

Genitalia: In lateral view, segment IX almost constituting of sternal process only; anterior apex located at mid-height of genitalia; in ventral view anteriorly without incision. Sternal processes, lateral view, with small, slender, approx. twice as long as high, with slightly concave dorsal margin, ventral margin convex; in ventral view, slender, orientated posteriorly along their length; apex pointed. Tergum X sharply tapering dorsally, higher than long; in dorsal view, mesally separate, each with irregular mesal margin. Parameres weakly developed, with small, narrow, ventral branch before superior appendages, continues into dorsal part of superior appendage before looping downwards into ventral margin of superior appendage; in dorsal view, slender, curving mesally and ending at mid-length of superior appendages; each with wart-like structure at mid-length with few short setae. Superior appendages, in lateral view, small, slender, approx. twice as long as high, with slightly concave dorsal margin, ventral margin convex; in dorsal view parallel-sided and slightly curved mesally along their length, rounded apex with mesal tooth. Inferior appendages, in lateral view, with broad basis and two long posteriorly orientated branches; dorsal branch slightly curving upwards, ending near mid-length of superior appendage, apex needle shaped; ventral branch uniformly thick, curving slightly outwards along its length; in ventral view with shield-shaped basis; dorsal branches located laterally of ventral branches, almost straight and orientated posterad along their length; ventral branches broad and curving mesally along their length, apex on each side well separated mesally; apex widely triangular; setae present on most parts. Phallus, in lateral view almost as long as segment IX, curving posterad at 1/4; in ventral view vase-shaped, with wide rounded basis and narrow posterior two-thirds.

Additional information.

This species was referred to as "sp. 49" in Espeland and Johanson (2010a).

Figures

Figures 201 - 205. Agmina bleuensis sp. nov. male holotype 201 genitalia, left lateral view 202 genitalia, dorsal view 203 genitalia, ventral view 204 phallus, lateral view 205 phallus, ventral view.