Neotrichia dirrocha, Neto & Ribeiro & Passos, 2021

Neto, Jaime De Liege Gama, Ribeiro, José Moacir Ferreira & Passos, Mahedy Araujo Bastos, 2021, The genus Neotrichia Morton 1905 (Trichoptera: Hydroptilidae) in Pará state Northern Brazil: New species and an unpublished species made available, Zootaxa 5082 (2), pp. 118-128 : 119-121

publication ID	https://doi.org/ 10.11646/zootaxa.5082.2.2
publication LSID	lsid:zoobank.org:pub:3AFA2ACC-6112-4094-8598-2B51A42CF286
DOI	https://doi.org/10.5281/zenodo.5785280
persistent identifier	https://treatment.plazi.org/id/03E84448-D33F-B552-57DC-48ABFF53FD5E
treatment provided by	Plazi
scientific name	Neotrichia dirrocha
status	sp. nov.

Treatment

Neotrichia dirrocha sp. nov.

Figs 2A–2D View FIGURE 2

Diagnosis. This species belongs to the N. caxima Species Group of Marshall (1979) as defined by Keth et al. (2015), based on the inferior appendages being reduced, not longer than wide, and segment X wrapping around the subgenital plate. The male of N. dirrocha sp. nov. is similar to that of N. cauame Gama Neto & Passos 2020 , resembling this species in the general aspect of tergum X in lateral view, and in the posteroventral margin of the segment IX with a sclerotized mesal process. The new species can be easily distinguished by the short apical portion of the phallus with a spatulate and sclerotized basal process and by the ejaculatory duct protruding far beyond the phallus apex.

Description. Male (in alcohol): Dark brown with length of each forewing 1.8 mm (holotype and 1 paratype). Postoccipital setal warts pronounced, large, ovoid. Antennae each with 18 articles; scape normal, cylindrical, slightly longer than pedicel; flagellomeres as long as pedicel, cylindrical. Maxillary palp formula I-II-IV-III-V (shortest to longest), first two articles extremely short, shorter than wide. Mesoscutellum anterior margin convex; metascutellum convexly subtriangular. Sternum VII with apicomesal process.

Male genitalia. Segment IX retracted in segment VIII, in lateral view with anterolateral margins produced anterad below midheight ( Fig. 2A View FIGURE 2 ); anterodorsal margin deeply concave in dorsal view ( Fig. 2C View FIGURE 2 ), anteroventral margin V-shaped and with basomesal process in ventral view ( Fig. 2B View FIGURE 2 ), posteroventral margin concave, in ventral view with one mesal, small, heavily sclerotized, and rounded projection ( Fig. 2B View FIGURE 2 , srp), in addition to pair of heavily sclerotized, truncate processes ( Fig. 2B View FIGURE 2 , stp) originating from sternum IX. Segment X membranous, fused with dorsum of segment IX; with large and oblong apex in lateral view ( Fig. 2A View FIGURE 2 ); in dorsal and ventral views deeply incised mesally ( Figs 2B, 2C View FIGURE 2 ). Subgenital plate in lateral view oblong, bearing pair of long apical setae ( Fig. 2A View FIGURE 2 , sg); in ventral view narrowing basally, widening subapically and with truncate apex flanked by pair of long setae ( Figs 2B, 2C View FIGURE 2 , sg). Bracteoles absent. Inferior appendages fused with segment IX laterally, highly reduced in lateral view ( Fig. 2A View FIGURE 2 , ia); in ventral view short, rectangular, longer than wide, each with slightly produced and heavily sclerotized inner mesal margin ( Fig. 2B View FIGURE 2 , ia). Phallus elongate, with broad tubular base narrowing to median constriction ( Fig. 2D View FIGURE 2 ); flat paramere encircling shaft and extending posterad beyond phallus apex ( Fig. 2D View FIGURE 2 , pr); apical portion short, with sclerotized and spatulate basal process ( Fig. 2D View FIGURE 2 , pa); ejaculatory duct protruding apically far beyond phallus apex ( Fig. 2D View FIGURE 2 , ed).

Female, larva, pupa, and egg. Unknown.

Holotype male. BRAZIL: Pará: São Geraldo do Araguaia municipality, Serra das Andorinhas, Igarapé xambioazinho, 6°10’20.07” S, 48°33’53.15” W, 30.Oct.2017, Pennsylvania trap, Ribeiro, J.M.F. leg. (alcohol; MPEG). GoogleMaps

Paratype. 1 male, same data as holotype (alcohol; UERR) GoogleMaps .

Distribution: Brazil (Pará, type locality only).

Etymology. The epithet “derocha” refers to a popular oral expression with invariant gender (de rocha = made of rock, with the meaning “it is truth”) used by the inhabitants of Pará State to emphasize that the speaker is telling the truth.