Caledomina paniensis, Johanson, 2017

Johanson, Kjell Arne, 2017, Description of three new species of Caledomina (Insecta, Trichoptera, Ecnomidae) from New Caledonia, European Journal of Taxonomy 352, pp. 1-12 : 2-4

Caledomina paniensis sp. nov.

urn:lsid:zoobank.org:act:6713A2D6-B4FF-4329-BEA9-952BB910F8D8

Figs 1–5 , 16 , 19

FI4 Caledomina sp. 2 – Espeland & Johanson 2010: 2116.

Diagnosis

Caledomina paniensis is distinguished from other species in the genus by the presence of a pair of sternal processes of sternite IX reaching about as long posteriorly as the inferior appendages.

Etymology

The specific epithet is derived from the type locality, Mount Panié.

Type material

Holotype

NEW CALEDONIA: ♂, Province Nord , Mt Panié, river below waterfall, 20°35.864' S, 164°49.780' E, 350 m, loc #16-2001, Malaise trap, 22–28 Nov. 2001, Johanson, Pape and Viklund leg. ( MNHN, DNA voucher: NHRS-FI4 ).

Description

WINGS. Fore wing length 2.2 mm, hind wing length 1.6 mm.

GENITALIA. Total length about 0.5 mm. Segment IX divided into pair of strong, anteriorly pointed ridges in lateral view ( Fig. 1 ); sternite IX originating from anterior ridge at mid-height; broadening posterad into pair of nearly parallel-sided plates with postero-dorsal sternal process ( Fig. 1 ); smooth, except few ventral setae. Sternal processes short, slender, slightly curving dorsally, each with large apical and subapical spine nearly as long as sternal process ( Figs 1, 3 ); orienting posterad along their length in ventral view ( Fig. 3 ); almost reaching point of bifurcation of superior appendages ( Fig. 1 ). Tergite IX Y-shaped in lateral view ( Fig. 1 ), anterodorsal corners strongly curving anterad before bending posterad at apex; with long setae on lateral faces; in dorsal view ( Fig. 2 ) with anterior-most part fused mesally; posterior part divided into tapering branches. Tergite X membranous, present above posterior apex of tergite IX in lateral view ( Fig. 1 ); in dorsal view divided into two lobes associated with branches of tergite IX; with minute setae along mesal margins ( Fig. 2 ). Superior appendages large; each divided into posterior dorsal and ventral lobes ( Fig. 1 ), with setae basally of bifurcation ( Figs 1–2 ). Dorsal lobes smooth, except with long row of hook-like spines oriented ventro-mesad ( Figs 1–2 ). Ventral lobes nearly straight along their length; ventral margin with minute spines; posterior apex narrowly rounded, covered with small setae; slightly exceeding dorsal lobe in length ( Fig. 1 ). Inferior appendages completely fused into small, mesal process, connected to central part of sternite IX by vaguely defined sclerotized ridges; dorsal margin slightly sigmoid; ventral margin convex except curving at apex; apex long, narrow in lateral view ( Fig. 1 ); in ventral view ( Fig. 3 ) with broad basis; narrowing slightly at one quarter its length, apex smooth, bifurcated. Phallic apparatus without processes ( Figs 4–5 ); tube-shaped; dorsal margin weakly narrowing at anterior one-third; posterior apex membranous.

Remarks

This species was referred to as “FI4 Caledomina sp. 2” in Espeland & Johanson (2010).

Figures

Figs 1–5. Caledomina paniensis sp. nov., holotype, adult ♂. 1. Genitalia, lateral view. 2. Genitalia dorsal view. 3. Genitalia, ventral view. 4. Phallus, lateral view. 5. Phallus ventral view. Scale bar = 0.1 mm.

Fig. 16. Map of New Caledonia with collecting sites of Caledomina indicated. Caledomina paniensis sp. nov. (black square), C. dorsospina sp. nov. (black triangle), C. kohensis sp. nov. (black filled circle), C. noumea Johanson, 2011 (red stars).

Fig. 19. Phylogenetic relationship among species of Caledomina, with morphology of male genitalia in lateral view to the right.