Neotrichia dirrocha Neto & Ribeiro & Passos 2021, sp. nov.
Creators: name: Neto, Jaime De Liege Gama
name: Ribeiro, José Moacir Ferreira
name: Passos, Mahedy Araujo Bastos
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Hydroptilidae
Neotrichia
Neotrichia dirrocha

description: Neotrichia dirrocha sp. nov.
Figs 2A–2D
W
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); anterodorsal margin deeply concave in dorsal view (Fig. 2C), anteroventral margin V-shaped and with basomesal process in ventral view (Fig. 2B), posteroventral margin concave, in ventral view with one mesal, small, heavily sclerotized, and rounded projection (Fig. 2B, srp), in addition to pair of heavily sclerotized, truncate processes (Fig. 2B, stp) originating from sternum IX. Segment X membranous, fused with dorsum of segment IX; with large and oblong apex in lateral view (Fig. 2A); in dorsal and ventral views deeply incised mesally (Figs 2B, 2C). Subgenital plate in lateral view oblong, bearing pair of long apical setae (Fig. 2A, sg); in ventral view narrowing basally, widening subapically and with truncate apex flanked by pair of long setae (Figs 2B, 2C, sg). Bracteoles absent. Inferior appendages fused with segment IX laterally, highly reduced in lateral view (Fig. 2A, ia); in ventral view short, rectangular, longer than wide, each with slightly produced and heavily sclerotized inner mesal margin (Fig. 2B, ia). Phallus elongate, with broad tubular base narrowing to median constriction (Fig. 2D); flat paramere encircling shaft and extending posterad beyond phallus apex (Fig. 2D, pr); apical portion short, with sclerotized and spatulate basal process (Fig. 2D, pa); ejaculatory duct protruding apically far beyond phallus apex (Fig. 2D, 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).
Paratype. 1 male, same data as holotype (alcohol; UERR).
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.
description: Published as part of 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, pp. 118-128 in Zootaxa 5082 (2) on pages 119-121, DOI: 10.11646/zootaxa.5082.2.2, http://zenodo.org/record/5785276