Xiphocentron (Antillotrichia) drepanum Vilarino & Calor 2024, sp. nov.
Creators: name: Vilarino, Albane
name: Calor, Adolfo R.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Xiphocentronidae
Xiphocentron
Xiphocentron drepanum

description: Xiphocentron (Antillotrichia) drepanum sp. nov.
Figures 13 A – D
Type material.
Holotype FRENCH GUIANA • ♂; Approuague-kaw, Kaw Mtn., 104 mao, 4 ° 33.035 ′ N, 52 ° 11.661 ′ W, Malaise trap, 23. i – 7. ii. 2007, FRG MF 3, N. Jönsson leg., [BOLD: GBMIN 18612-13; GenBank: JQ 239839] NHRS TOBI 000003833.
Diagnosis.
The new species can be diagnosed mainly by the sickle-shape of preanal appendage in dorsal view, in which the mesal margin has a strong concavity and the apex is wide with a mesal pointed projection. This character is unique to this species.
Description.
Male: Body. Forewing length 3.5 mm (n = 1). Color overall brown, forewing pattern uniformly brown. Maxillary palp segment length formula (I = II = III) <IV <V. Tibial spur formula 2: 4: 3; spurs unmodified. Forewing forks II and IV present; fork II sessile at discoidal cell; discoidal slightly shorter than thyridial cell. Hind wing forks II and V present (Fig. 13 A). Sternum V with short, sclerotized anterolateral projection.
Genitalia (Figs 13 B – D). Tergum IX, in lateral view, wider basally, narrower apically (Fig. 13 A); in dorsal view, anterior margin with deep narrow concave incision; posterior margin with round lobes and shallow mesal incision (Fig. 13 C). Sternum IX, in lateral view, about 2 × as long as high, apex deltoid; anterior apodeme narrow, straight, tapering to narrow flange (Fig. 13 B); in ventral view, about as long as wide, posterior margin with shallow mesal incision (Fig. 13 D). Tergum X membranous fused basodorsally to each paraproct (Figs 13 B, 13 C). Paraproct, in lateral view, oblong, wide at base, tapering apically with submesal angle, apex round, with narrow, short ventral lobe (Fig. 13 B); in dorsal view, wide basally, divided apicomesally, each side partially fused at base, without clear sclerotized mesal band, apex with several sensillae (Fig. 13 C). Preanal appendage setose, in lateral view, about 2 × as long as tergum IX, narrow, bent posterad at basal 1 / 3, apically wider and curved upward, apex round (Fig. 13 B); in dorsal view, sickle-shaped, enlarged at base, narrow at midlength with concave mesal margin, wide at apex with mesal wide pointed projection (Fig. 13 C). Inferior appendage, in lateral view, about 2 × as long as tergum IX; coxopodite and harpago partialy fused, with shape discontinuity between each article, inner face with longitudinal area of dense, long spine-like setae (Fig. 13 B); basal region (coxopodite) wide, with small basomesal spine-like setae, mesal sclerite region with dense, long spine-like setae; apical region (harpago) narrow, digitate, 1.5 × as long as basal region (Fig. 13 A); basal plate in lateral view wide, anteriorly with short, narrow flange (Fig. 13 B). Phallus tubular, very long and narrow, reaching segment V; basally conical, subapically annulate, weakly sclerotized; apex slightly enlarged.
Etymology.
From the Greek drepánē, ‘ sickle’, in reference to the preanal appendage shape.
Distribution.
French Guiana
description: Published as part of Vilarino, Albane & Calor, Adolfo R., 2024, Comparative geometric morphometrics of male genitalia in Xiphocentron subgenera (Trichoptera: Xiphocentronidae): new species, revision and phylogenetic systematics of the subgenus Sphagocentron, pp. 407-431 in Arthropod Systematics & amp; Phylogeny 82 on pages 407-431, DOI: 10.3897/asp.82.e112587