Xanthochorema neocaledonia Johanson 2002, sp.n.
Creators: name: Johanson, Kjell Arne
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Hydrobiosidae
Xanthochorema
Xanthochorema neocaledonia

description: <i>Xanthochorema neocaledonia</i> sp.n. (Figs 1 ­6, 13) <i>Material examined</i>: Male holotype: <b>NEW CALEDONIA</b>: Prov. Sud, Sarraméa, 207 m., stream near waterfall, 21 ° 36.981 'S, 165 ° 51.154 'E, Malaise trap, 18­21.xi. 2001 [Johanson, Pape &amp; Viklund]. Paratype (1 male): ditto, except 130 m, large, stony stream, 21 ° 38.291 'S, 165 ° 51.562 'E, 3­5.xii. 2001. <i>Etymology</i>: <i>neocaledonia</i> derived from New Caledonia. <i>Diagnosis</i>. In genitalia, the parapod is deeply bifurcated and forms a pointed, dorsal branch which is oriented dorsad; and a pointed, ventral branch which is oriented posteroventrad; the coxopodite is broad along its length, and at posterodorsal corner strongly produced posterodorsad. <i>Description</i>. Fore wing: 7.1 mm; hind wing: 6.0 mm. Spurs 0, 4, 4. Abdominal segment with internal gland situated in posterior part of segment IV and anterior part of segment V, connected to lateral filament on segment V (Fig. 1). Filament nearly twice the length of segment V; arising anteroventrally on segment V, oriented posteroventrad, tuboid along its length, narrowing towards apex; distal half with dorsal microtrichia and ventral teeth (Fig. 1). Segment VI with sternal process arising medially on segment; exceeds segment VI; slightly posteriorly curved; covered by ventral microtrichia (Fig. 1); in ventral view (Fig. 2), slightly tapered toward truncated apex. <i>Genitalia</i> (Figs 3­6): Segment IX, lateral view (Fig. 3), parallelogram­shaped, with slightly convex anterior margin; in dorsal view (Fig. 4), with inner margin widely ellipsoid; in ventral view (Fig. 5), posterior margin shallowly produced medially, anterior margin concave; longitudinal apodeme only visible in ventral view (Fig. 5). Proctiger, lateral view (Fig. 3), substraight, broad, apically obtuse, apical margin undulated, dorsal margin incised at proximal part, opposite to lateral process of proctiger; in dorsal view (Fig. 4) substraight, with parallel lateral margins, apically incised. Lateral process of proctiger (Fig. 3) slender, nearly as long as the height of proctiger, oriented posterodorsad. Filopod, lateral view (Fig. 3), slightly curved dorsad, about 3.7 x longer than lateral process of proctiger, dorsal margin covered by very long setae, ventral margin with shorter setae; in dorsal view curved mesad along its length (Fig. 4). Preanal appendage (Fig. 3), short, slightly club­shaped, covered by short setae, parallel with basal part of filopod. Parapod (Fig. 3), deeply bifurcated, dorsal fork slightly curved dorsad, with smooth margins, apically pointed; in dorsal view apically strongly curved laterad; ventral fork oriented posteroventrad, apically sigmoid, proximally with ventral swelling (Fig. 3). Gonocoxite: coxopodite, lateral view (Fig. 3), very broad along its length, with subparallel dorsal and ventral margins; dorsodistally strongly produced into long, pointed process, covered by short setae on both lateral and median face; harpago proximally thick compared to central part, apically club­shaped, smooth; in ventral view (Fig. 5), coxopodite median margin proximally expanded, tapered medially toward slender distal half, apically obtuse; harpago long, slender, curved mediad along its length. Phallus in lateral view (Fig. 6), sigmoid, generally broad along its length, except constricted at two thirds its length; aedeagus, long, slender, distal part slightly curved dorsad; sperm channel slender proximally, expanded strongly in medial part of phallus; endotheca forms simple lobe with internal, darkly sclerotized process.
description: Published as part of <i>Johanson, Kjell Arne, 2002, A new species of the New Caledonian endemic genus Xanthochorema Kimmins, 1953 (Insecta: Trichoptera: Hydrobiosidae), pp. 1-6 in Zootaxa 42</i> on page 2, DOI: 10.5281/zenodo.4619850