Neotrichia cauame, Neto & Passos, 2020

Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos, 2020, Additional six new species of Neotrichia Morton 1905 (Insecta: Trichoptera Hydroptilidae) from Roraima state, Brazil, Zootaxa 4881 (1), pp. 179-188 : 182-183

publication ID

https://doi.org/ 10.11646/zootaxa.4881.1.11

publication LSID

lsid:zoobank.org:pub:4083C6BC-10C2-47EF-A95C-0F64BF26F986

DOI

https://doi.org/10.5281/zenodo.4426424

persistent identifier

https://treatment.plazi.org/id/1B3587B0-FFE7-FFDA-FF33-C5D3FE0EE48B

treatment provided by

Plazi

scientific name

Neotrichia cauame
status

sp. nov.

Neotrichia cauame sp. nov.

Figures: 3A–3D

Diagnosis. This species belongs to the Neotrichia caxima Species Group of Marshall (1979) as defined by Keth at al. (2015), based on the inferior appendages reduced and not longer than wide, and segment X wrapping around the subgenital plate. The male of Neotrichia cauame sp. nov. is similar to that of Neotrichia rotundata and Neotrichia damurida in the highly reduced inferior appendages and the general aspect of tergum X ( Figs. 3A, 3C View FIGURE 3 ). The new species differs from those two species by the spiraled hook of the phallus apex ( Fig. 3D View FIGURE 3 ).

Description. Male (in alcohol): Dark brown, with length of each forewing 1.1 mm (holotype). Postoccipital setal warts pronounced, large, ovoid. Antennae each with 18 articles; scape normal, cylindrical, slightly longer than pedicel; flagellomeres each as long as pedicel, cylindrical. Maxillary palp formula I-II-IV-III-V (shortest to longest), first two articles 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. 3A View FIGURE 3 ); anterodorsal margin deeply concave in dorsal view ( Fig. 3C View FIGURE 3 ), anteroventral margin V-shaped ( Fig. 3B View FIGURE 3 ), posteroventral margin concave and with pair of heavily sclerotized mesal processes in ventral view ( Figs 3A, 3B View FIGURE 3 , smp). Segment X membranous, fused with dorsum of segment IX; with large oblong apex in lateral view ( Fig. 3A View FIGURE 3 ); in dorsal and ventral views subquadrate with broadly emarginate posteromesal margin ( Figs 3B, 3C View FIGURE 3 ). Subgenital plate in lateral view oblong ( Fig. 3A View FIGURE 3 , sg); in ventral view wide basally narrowing distally to sharp medial point flanked by pair of long setae ( Fig. 3B View FIGURE 3 , sg). Inferior appendages highly reduced in lateral view ( Fig. 3A View FIGURE 3 , ia); in ventral view ellipsoid, apically blunt, each with produced and heavily sclerotized inner mesal margin ( Fig. 3B View FIGURE 3 , ia). Phallus elongate with broad tubular base narrowing to median constriction; paramere encircling shaft and extending posterad ( Fig. 3D View FIGURE 3 , pr); apical portion tapered, slender with short and heavily sclerotized and spiraled basal process; ejaculatory duct protruding apically ( Fig. 3D View FIGURE 3 , ed).

Female, larva, pupa, and egg. Unknown.

Holotype male. BRAZIL: Roraima: Iracema municipality, Vicinal Campos Novos (Fazenda Rancho Fundo), small order stream, 2°21’26.22”N, 61°23’38.98”W, 209 m a.s.l., 16 Mar. 2018, Pennsylvania light trap, J.L. Gama Neto, leg. (alcohol; MPEG). GoogleMaps

Distribution: Brazil (Roraima, type locality only).

Etymology. The specific name “ cauame ” is a noun used in apposition, referring to the Cauamé River, a western tributary of the Branco River.

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydroptilidae

Genus

Neotrichia

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