Xiphocentron (Antillotrichia) pineroi Bueno, Vilarino & Barba, 2022

Bueno-Soria, Joaquin, Vilarino, Albane, Barba-Alvarez, Rafael & Ballesteros-Barrera, Claudia, 2022, Three new species of Xiphocentron Brauer, 1870 (Trichoptera, Xiphocentronidae) from Mexico, ZooKeys 1111, pp. 199-213 : 199

Xiphocentron (Antillotrichia) pineroi Bueno, Vilarino & Barba sp. nov.

Figures 4 , 6

Diagnosis.

This new species is similar to other species with a mesal sclerite on the inferior appendages. The new species is particularly similar to Xiphocentron (Antillotrichia) surinamense Flint, 1974, and Xiphocentron (Antillotrichia) pintada Flint, 1983 due to the shape of tergum IX and the mesal sclerite. Xiphocentron (Antillotrichia) pineroi sp. nov. can be distinguished from X. (Antillotrichia) surinamense by the longer and thinner sternum IX, preanal and inferior appendages in lateral view. It is distinguished from X. (Antillotrichia) pintada by its longer, sinuous mesal sclerite in lateral view, and by the deeper mesal emargination of sternum IX in dorsal view.

Description.

Adult. Forewing length 6.0 mm. Color in alcohol pale. Tibial spur formula 2-4-3. Hind tibia apical spurs not modified. Sternum V bearing pair of reticulated regions.

Male genitalia. Tergum IX in lateral view, ovate, anterior margin rounded, posterior margin rectilinear, dorsal margin produced posterad. In dorsal view anterior margin with narrow, V-shaped, mesal emargination. Apical margin with acute mesal emargination. Sternum IX ovate, in lateral view, about twice as long as high; anterior margin with elongate, slender, pointed, mesal apodeme; ventral margin convex; dorsal margin subtriangular; in ventral view, anterior margin rectilinear; posterior margin with short, rounded, mesal emargination. Tergum X, in lateral view, cylindrical, narrow basally, mesally wider, circular apically. In dorsal view, subtriangular, wide basally, narrow apically; lateral surface sclerotized, each sclerotized side fused mesally; apex with deep, V-shaped emargination, forming two lobes; in ventral view, subtriangular, wide basally, narrow and cleft apically, forming two apicomesal projections. Preanal appendages elongated, about twice as long as segment X and setose. In lateral view, basally directed posterodorsally, then bent posterad, constricted at mid-length, apex rounded. In dorsal view, narrowed at base and sinuous, rectangular preapically, apex rounded, rugose. Inferior appendages long, shorter than preanal appendages, basal section with narrow and sinuous sclerite bearing small spines at apex; in lateral view, basal section broad, apical section longer than basal region, slender; in dorsal view, apex rectangular, basal section rounded; mesal surface with row of several short spine-like setae and narrow sclerite; in ventral basal section rugose near basal plate; basal plate long, about as long as half sternum IX length. Phallus long, slender, tubular, apex enlarged.

Female. Unknown.

Type material.

Holotype: ♂ Mexico: Tabasco, Mpio. Huimanguillo Ejido Villa de Guadalupe 1a Secc. Cascada Cerro de Las Flores Rta. Malpasito-Carlos A. Madrazo 17°21'39"N, 93°37'29"W, elev. 540 m, 16.III.2000, J. Bueno, R. Barba, A. Rojas leg. in glycerin (CNIN).

Etymology.

We take great pleasure in naming this species for Dr Daniel Ignacio Piñero-Dalmau in recognition of his great contributions to the knowledge of the genetics of populations and conservation of Mexican plants.

Distribution.

The holotype was collected at a waterfall in a rain forest in Tabasco State (Fig. 6 ).

Figures

Figure 4. Xiphocentron (Antillotrichia) pineroi sp. nov., holotype, adult, ♂, genitalia A left lateral B dorsal C ventral D phallus apex, left lateral and dorsal E detail of right inferior appendage mesal surface, lateral, ventro-lateral, and ventral view.

Figure 6. Mexican distribution of the new species of Xiphocentron and X. (Antillotrichia) rhamnes Schmid, 1982.