Gracilipsodes aoupiniensis, Malm & Johanson, 2008

Malm, Tobias & Johanson, Kjell A., 2008, Revision of the New Caledonian endemic genus Gracilipsodes (Trichoptera: Leptoceridae: Grumichellini), Zoological Journal of the Linnean Society 153 (3), pp. 425-452 : 428-430

publication ID	https://doi.org/ 10.1111/j.1096-3642.2008.00403.x
DOI	https://doi.org/10.5281/zenodo.10546201
persistent identifier	https://treatment.plazi.org/id/C046B71F-CB2A-0D35-FCDB-5CD1F9218E6A
treatment provided by	Felipe
scientific name	Gracilipsodes aoupiniensis
status	sp. nov.

Treatment

GRACILIPSODES AOUPINIENSIS SP. NOV. (FIGS 2, 13)

Diagnosis: This species is distinguished from G. lanceolatus sp. nov., G. grandis sp. nov.; G. psocopterus , and G. similis by the tibial spur formula of 2, 2, 2, and by the presence of a pair of pre-apical lateral processes of tergum X originating at the apical half of the segment. It is separated from G. aureus sp. nov. and G. robustus sp. nov. by having more hind tibial spines, in the genitalia, by the longer lateral processes of tergum X, and in the forewing, by the longer crossvein m–cu being sharply angled to M. It is separated from G. aurorus sp. nov. by lighter body colour, the slit tergum X apex, and the higher number of hind tibial and mesal spines on the apical part of the inferior appendage. It is distinguishable from G. koghiensis sp. nov. by the shorter superior appendages and shallower apical slit of tergum X.

Description, male: Body and wings brown (in alcohol). Tibial spur formula: 2, 2, 2. Hind tibiae each with 26 small black spines (N = 1). Forewing (Fig. 2A): length 7.9 mm (N = 1), apically rounded; forks 1 and 5 present; crossvein m–cu about as long as crossvein

KEY TO GRACILIPSODES MALES

1 Hind tibiae each with two spurs........................................................................................................5 – Hind tibiae each with one spur......................................................................................................2

2(1) Protibiae each with one spur; pair of pre-apical, lateral processes on tergum X present ( Fig. 5C View Figure 5 ); hindwing fork 3 present ( Fig. 5B View Figure 5 )......................................................................................................... grandis sp. nov. – Protibiae each with either no or two spurs; pair of lateral processes on segment X absent ( Figs 7C View Figure 7 , 9C View Figure 9 ); hindwing fork 3 absent ( Fig. 5B View Figure 5 ).....................................................................................................3

3(2) Tibial spur formula 2, 2, 1; tergum X uniform, membranous, and tubular ( Fig. 7D, E View Figure 7 ); hindwing fork 1 absent ( Fig. 7B View Figure 7 ) ............................................................................................................... lanceolatus sp. nov. – Tibial spur formula 0, 1, 1; tergum X forming two long, straight sclerotized spines ( Fig. 9D, E View Figure 9 ); hindwing fork 1 present ( Fig. 9B View Figure 9 )..........................................................................................................................4

4(3) Inferior appendage apical part triangular in lateral view, apex truncate ( Fig. 9C View Figure 9 )........................................ .................................................................................................................. psocopterus, Sykora, 1967 – Inferior appendage apical part ovoid in lateral view, apex produced ( Fig. 10C View Figure 10 )......................................... ....................................................................................................................... similis Ward (2001)

5(1) Pre-apical lateral processes on tergum X shorter than median process ( Fig. 3C View Figure 3 ); forewing crossvein m–cu shorter than crossvein r–m, almost at right angle to M ( Fig. 3A View Figure 3 ).......................................................................6 – Pre-apical lateral processes on tergum X about as long as median process ( Fig. 6C View Figure 6 ); forewing crossvein m–cu as long as, or longer than, crossvein r–m, and at sharp angle to M ( Fig. 6A View Figure 6 ) .........................................7

6(5) Superior appendages longer than tergum X; apical part of inferior appendage parallel sided in lateral view ( Fig. 3C View Figure 3 ) ..................................................................................................................... aureus sp. nov. – Superior appendages as long as tergum X; apical part of inferior appendage slightly club-shaped in lateral view ( Fig. 8C View Figure 8 )................................................................................................................ robustus sp. nov.

7(5) Body dark greyish brown colour; hind tibiae each with at most 20 spines; apical part of inferior appendage with at most 30 mesal spines ( Fig. 4C View Figure 4 ).................................................................................. aurorus sp. nov. – Body brown colour; hind tibiae each with more than 20 spines; apical part of inferior appendage with more than 35 mesal spines ( Fig. 6C View Figure 6 ).............................................................................................................. 8

8(7) Hindwing crossvein r–m curved (Fig. 2D); superior appendages about as long as tergum X; tergum X shallowly slit at apex (Fig. 2F, G).......................................................................................... aoupiniensis sp. nov. – Hindwing crossvein r–m straight ( Fig. 6B View Figure 6 ); superior appendages longer than tergum X; tergum X deeply slit at apex ( Fig. 6D, E View Figure 6 ) .................................................................................................. koghiensis sp. nov.

r–m, sharply angled with M. Hindwing (Fig. 2D): length 5.5 mm (N = 1), apex nearly acute; forks 1, 3, and 5 present; crossvein r–m convex; costa with about 23 hamuli.

Genitalia: Segment IX annular, laterally setose, narrowest at bases of superior appendages; tergite IX about as broad as sternite IX in lateral view (Fig. 2E); anterior margins of sternite IX slightly produced anterad at mid height (Fig. 2E). Superior appendages setose, flattened dorsoventrally, about as long as tergum X, with apices rounded in dorsal view (Fig. 2F). Tergum X membranous; median process entire, basally wide, apex widely rounded, concave dorsally in lateral view (Fig. 2E), apex with shallow slit in dorsal and ventral views (Fig. 2F, G), and bearing few, small setae; pre-apical lateral processes about as long as median process, produced at apical half, sclerotized, digitate, directed posterad, slightly curving ventrad (Fig. 2E). Inferior appendages each bipartite, setose; basal part wide in lateral view (Fig. 2E), mesally concave, produced posteromesally into a broad, distally tapering, apically rounded lip, bearing small dorsal spines (Fig. 2E, G); apical part of each inferior appendage digitate, mesally curved, in lateral view, parallel sided and straight, apex rounded, with 50 mesal spines (Fig. 2E); mesal process with five strong spines (Fig. 2F). Harpago: small, weakly sclerotized (Fig. 2E). Phallic apparatus simple (Fig. 2H, I), phallicata basally tubular, apex truncate, fused with phallobase, bent 25° ventrally at mid length; apicoventral corner with pair of sclerotized, slender lateral processes oriented posteroventrad (Fig. 2H); phallotremal sclerite U-shaped (Fig. 2I).

Holotype (male): New Caledonia, Province Nord, Mt Aoupinié fauna reserve, 24–28 November 2001, Malaise trap, loc#19 (Johanson, Pape & Viklund).

Distribution: Province Nord, Mt Aoupinié.

Etymology: The name aoupiniensis is derived from the type locality, Mt Aoupinié.

· Figure 2. Gracilipsodes aoupiniensis sp. nov. A, forewing. B, rasp-like basal hindwing hair, detail. C, hindwing hamulus, detail. D, hindwing. E, genitalia, lateral. F, genitalia, dorsal. G, genitalia, ventral. H, phallus, lateral. I, phallus, ventral. Abbreviations of wing structures: 1, fork 1; 3, fork 3; 5, fork 5; a, anal veins; b.h., basal rasp-like hairs; cu, cubitus; dc, discoidal cell; ha., hamuli; m, media; n, nygma; r, radius; r–m, crossvein r–m, sc, subcosta; tc, thyroidal cell. Abbreviations of genitalic structures: h., harpago; if.ap., inferior appendage apical part; if.b., inferior appendage basal part; ph.sc., phallothremal sclerite; pl.p., tergum X pre-apical lateral processes; s.app., superior appendage; s.IX, sternite IX; t.IX, tergite IX; t.X, tergum X.