Xiphocentron (Sphagocentron) evandrus Schmid, 1982

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, Arthropod Systematics & amp; Phylogeny 82, pp. 407-431 : 407-431

publication ID	https://doi.org/ 10.3897/asp.82.e112587
publication LSID	lsid:zoobank.org:pub:CB81B265-46A0-4247-A2F2-C9AC2394BC4E
DOI	https://doi.org/10.5281/zenodo.11238203
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treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Xiphocentron (Sphagocentron) evandrus Schmid, 1982
status

Treatment

Xiphocentron (Sphagocentron) evandrus Schmid, 1982 View in CoL

Figures 8 A – D View Figure 8

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 View Figure 8 ). Hind wing forks II and V present. Sternum V with anterolateral reticulated region.

Genitalia (Fig. 8 B – D View Figure 8 ). Tergum IX, in lateral view, wide basally, narrower apically (Fig. 8 B View Figure 8 ); in dorsal view posterior margin forming two dorsal lobes in quarter circle shaped and large lateral flanges (Fig. 8 C View Figure 8 ). Sternum IX, in lateral view, about 3 × as long as high, apex narrow, anterior apodeme short, truncate (Fig. 8 B View Figure 8 ); in ventral view, greatly enlarged at middle length, then greatly narrowed towards posterior margin, posterior margin with two very small lobes (Fig. 8 D View Figure 8 ). Paraproct, in lateral view, with apex oblique (Fig. 8 B View Figure 8 ); in dorsal view, apex round, ending in three equal lobes (Fig. 8 C View Figure 8 ). Preanal appendage, in lateral view, wide, strongly thickened subapically then tapering into long triangular pointed apex (Fig. 8 B View Figure 8 ). 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 View Figure 8 ); basal region (coxopodite) wide, mesal sclerite region indistinct (Fig. 8 B View Figure 8 ); apical region (harpago) narrow, digitate, 3 × as long as basal region, strongly curved (Fig. 8 B View Figure 8 ); in dorsal view, strongly sinuous (Fig. 8 C View Figure 8 ). Phallus tubular, very long and narrow, reaching segment V, basally conical, subapically annulate, weakly sclerotized, apex enlarged.