Gracilipsodes aureus, 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 : 432

publication ID

https://doi.org/ 10.1111/j.1096-3642.2008.00403.x

DOI

https://doi.org/10.5281/zenodo.5492574

persistent identifier

https://treatment.plazi.org/id/C046B71F-CB2E-0D37-FF25-58BAFEC78BC5

treatment provided by

Felipe

scientific name

Gracilipsodes aureus
status

sp. nov.

GRACILIPSODES AUREUS SP. NOV. ( FIGS 3 View Figure 3 , 13 View Figure 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 2, 2, 2, and the presence of a pair of pre-apical lateral processes of tergum X, originating from the apical half of the segment. It is separated from G. aurorus sp. nov., G. koghiensis sp. nov., and G. aoupiniensis sp. nov. in the genitalia, by the shorter lateral processes of tergum X, and in the forewing, by the shorter crossvein m–cu oriented at almost a right angle to M. It is distinguishable from G. robustus sp. nov. by its slightly smaller size, in the genitalia, by the longer superior appendages, and by the apical part of the inferior appendage being slender and parallel-sided.

Description, male: Body golden yellowish brown. Wings greyish brown. Tibial spur formula 2, 2, 2. Hind tibiae each with 15–19 small black spines (N = 3). Forewing ( Fig. 3A View Figure 3 ): length 6.8–7.2 mm (N = 3), apically rounded; forks 1 and 5 present; crossvein m–cu about as long as or slightly shorter than crossvein r–m, and at right angle with M. Hindwing ( Fig. 3B View Figure 3 ): length 5.0– 5.2 mm (N = 3), apex nearly acute; forks 1, 3, and 5 present; crossvein r–m convex; costa with 20–23 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. 3C View Figure 3 ). Superior appendages setose, flattened dorsoventrally, slightly longer than tergum X, apices rounded in dorsal view ( Fig. 3D View Figure 3 ). Tergum X membranous; median process entire, basally wide, apex rounded, dorsal margin slightly concave in lateral view ( Fig. 3C View Figure 3 ), apex with shallow notch in dorsal and ventral views ( Fig. 3D, E View Figure 3 ); pre-apical lateral process shorter than median process, produced at apical half, sclerotized, digitate, directed posterolaterad, and slightly curving dorsally ( Fig. 3C View Figure 3 ). Inferior appendages each bipartite, setose; basal part wide in lateral and ventral views ( Fig. 3C, D View Figure 3 ), mesally concave, produced posteromesally into a broad, apically rounded lip, bearing small dorsal spines ( Fig. 3C, E View Figure 3 ); apical part of each inferior appendage digitate, curving mesally, in lateral view parallel-sided, apex rounded, with 30–40 mesal spines ( Fig. 3C View Figure 3 ); mesal process with between five and seven strong spines ( Fig. 3D View Figure 3 ). Harpago small, slender, club-shaped, apex nearly acute ( Fig. 3C View Figure 3 ). Phallic apparatus simple ( Fig. 3F, G View Figure 3 ), phallicata basally tubular, fused with phallobase, apex truncate; bent about 45° ventrad at mid length; apical part with pair of sclerotized, broad lateral processes, produced ventrad, curved somewhat medially, and broadly rounded at apex ( Fig. 3F View Figure 3 ); phallotremal sclerite U-shaped ( Fig. 3G View Figure 3 ).

Holotype (male): New Caledonia, Province Nord, Col d’Amieu, 20 km north of Sarraméa , 306 m a.s.l., small river, 21°33.877′S, 165°49.922′E, 2 December 2001, light trap, loc#27 (Johanson, Pape & Viklund). GoogleMaps

Paratypes: One male, same data as holotype. One male, New Caledonia, Province Sud, Sarraméa, 220 m a.s.l., 19 November 2001, light trap, loc#10 (Johanson, Pape & Viklund); one male, New Caledonia, Province Nord, Xwê Dachava Stream, Rembai Mt , 21°34.854′S, 165°49.478′E, 317 m a.s.l., 5–12 January 2004, Malaise trap, loc#108 (Johanson) GoogleMaps .

Distribution: Central Grande Terre.

Etymology: From Latin, aureus , golden; named for the golden, yellowish brown body colour of the species.

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