Xiphocentron (Sphagocentron) evandrus Schmid 1982
Creators: name: Vilarino, Albane
name: Calor, Adolfo R.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Xiphocentronidae
Xiphocentron
Xiphocentron evandrus

description: Xiphocentron (Sphagocentron) evandrus Schmid, 1982
Figures 8 A – D
Schmid 1982: 56 [Type locality: Costa Rica, Juan Vinas, Chiz river; USNM; ♂]. — Holzenthal 1988 c: 58 [distribution]. — Armitage et al. 2015 a: 3 [distribution]. — Armitage et al. 2015 b: 5 [checklist]. — Armitage and Cornejo 2015: 193 [checklist]. — Harris and Armitage 2019: 7 [distribution]
Material examined.
COSTA RICA • ♂; Juan Vinas, Chiz river, 21. vi. 1967, Flint and Ortiz leg., USNM. • ♂; Alajuela, Río La Vieja, nr. Lagarto, 2-3. vii. 1967, Flint and Ortiz leg., USNM.
Diagnosis.
Xiphocentron evandrus can be differentiated by the combination of preanal appendage subapically wide, sternum IX posterior margin produced, overall deltoid, with shallow apical incision forming very small lobes; tergum IX with very deep, narrow, parallel sided mesal incision.
Synopsis.
Adult male. Forewing length 4-4.25 mm (n = 2). Color overall brown, forewing uniformly dark brown. Maxillary palp segment length formula (I = II = III) <IV <V. Tibial spur formula 2: 4: 3; spurs unmodified. Forewing forks I, II and IV present; fork I petiolated, fork II sessile at discoidal cell; discoidal cell half as long as thyridial cell (Fig. 8 A). Hind wing forks II and V present. Sternum V with anterolateral reticulated region.
Genitalia (Fig. 8 B – D). Tergum IX, in lateral view, wide basally, narrower apically (Fig. 8 B); in dorsal view posterior margin forming two dorsal lobes in quarter circle shaped and large lateral flanges (Fig. 8 C). Sternum IX, in lateral view, about 3 × as long as high, apex narrow, anterior apodeme short, truncate (Fig. 8 B); in ventral view, greatly enlarged at middle length, then greatly narrowed towards posterior margin, posterior margin with two very small lobes (Fig. 8 D). Paraproct, in lateral view, with apex oblique (Fig. 8 B); in dorsal view, apex round, ending in three equal lobes (Fig. 8 C). Preanal appendage, in lateral view, wide, strongly thickened subapically then tapering into long triangular pointed apex (Fig. 8 B). Inferior appendage, in lateral view, about 2 × as long as tergum IX, coxopodite and harpago completely fused to each article, inner face with longitudinal area of dense, long spine-like setae, and row of regular setae from midlenght to apex (Fig. 8 B); basal region (coxopodite) wide, mesal sclerite region indistinct (Fig. 8 B); apical region (harpago) narrow, digitate, 3 × as long as basal region, strongly curved (Fig. 8 B); in dorsal view, strongly sinuous (Fig. 8 C). Phallus tubular, very long and narrow, reaching segment V, basally conical, subapically annulate, weakly sclerotized, apex enlarged.
Distribution.
Costa Rica, Panama.
Remarks.
Type was fixed in a permanent slide and displayed in a dorso-lateral view.
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