Caenocentron galesus, SCHMID, 1982

Vilarino, Albane, Dias, Everton Santos & Bispo, Pitágoras Da Conceição, 2022, Phylogeny indicates polyphyly in Cnodocentron (Trichoptera: Xiphocentronidae): biogeography and revision of New World species (Caenocentron), Zoological Journal of the Linnean Society 194 (4), pp. 1341-1373 : 1362

CAENOCENTRON GALESUS SCHMID, 1982

( FIG. 15A, B )

Cnodocentron (Caenocentron) galesus Schmid, 1982: 44 .

Type material: Holotype male. COSTA RICA, Puntaneras , 2.8 mi E. of Golfito 3–4.vii.1967, O. S. Flint & B. Ortiz leg., (♂ pinned, USNMENT1028602).

Type locality: Costa Rica, 2.8 mi E. of Golfito; USNM; ♂. – Holzenthal, 1988: 58 [distribution]. – Aguila 1992: 537 [distribution]. – Armitage et al., 2015: 5 [checklist]. – Armitage & Cornejo 2015: 193. [checklist]. – Holzenthal & Calor, 2017: 454 [catalogue].

Diagnosis: Cnodocentron galesus is similar to C. immaculatum and C. pallas by having a pair of stout spines on the ventral projection of coxopodite. Cnodocentron galesus can be diagnosed by the truncate apical margin of sternum IX in lateral view; and the median region of coxopodite with a transverse patch of setae.

Adult: Forewing length 2.7 mm (N = 1♂). Colour (pinned) dark with three short white vertical bars: near the basal third of wing, at the end of cubital vein, and at pterostigma. Maxillary palp formula (I-II-III)-IV-V; segment IV shorter than sum of segments I-II-III; male tibial spurs 2-4-3, male hindleg apical spur unmodified. Venation: forewing fork II and IV present, three anal veins present; hindwing fork II and V present, transverse vein between R1 and SR present. Abdominal sternum V with anterolateral oval region with cuticle modified and reticulate .

Male genitalia ( Fig. 15A, B ): Tergum IX, in lateral view, narrow, height greater than length. Sternum IX, in lateral view, subquadrate, height greater than length, anterior margin truncate, with narrow and elongate apodeme, apical margin truncate, dorsal margin prominent; in ventral view, apical margin concave. Segment X membranous, fused to paraproct. Paraproct, in lateral view, trapezoidal, dorsal margin, sclerotized, with short process, ventroapically acute. Pre-anal appendage, in lateral view, strongly sinuous, slender, apex enlarged. Inferior appendage, coxopodite and harpago distinct. Coxopodite, in lateral view, median region with transverse patch of setae; apical margin produced, rounded; basal surface with long ventral projection. Ventral projection with stout spine and rows of setae mesally and along its margin, apical setae longer; in ventral view, ventral projection lateral setae long, mesal setae short, with pair of strong lateral spines. Harpago, in lateral view, slender, elongate, basal third with short spine; in dorsal view, basal third with two weak thickenings. Basal plate, in lateral view, directed ventrad. Phallus tubular, long and slender, base flared, reaching segment V; apex slightly.

Distribution: Costa Rica, Panama.

Figures

Figure 15. Caenocentron galesus, male genitalia A, lateral; B, ventral.