Neotrichia cruviana,

Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos, 2019, The genus Neotrichia Morton 1905 (Insecta: Trichoptera: Hydroptilidae) in Roraima state, Brazil: New records and description of seven new species, Zootaxa 4695 (6), pp. 516-528: 520-522

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Neotrichia cruviana

sp. nov.

Neotrichia cruviana  sp. nov.

Figures: 5A–5D

Diagnosis. This species belongs to the Neotrichia collata  Species Group of Marshal (1979). The male of Neotrichia cruviana  sp. nov. is similar to that of Neotrichia kampoka Oláh & Johanson 2011  , resembling this species mainly in that segment IX is open dorsally and inferior appendages are long, but it differs by having segment IX with anterior margins more strongly produced anterad; posterodorsal processes of segment IX shorter; and subgenital plate, in ventral view, triangular and blunt apically (subrectangular and with deep V-shaped mesal excision on posterior margin in N. kampoka  ).

Description. Male (in alcohol): Dark brown with length of each forewing 1.5 mm (holotype). Postoccipital setal warts pronounced, large, ovoid. Antennae each with 18 articles; scape normal, cylindrical, slightly longer than pedicel; flagellomeres of pedicel size, long 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 without apicomesal process.

Male genitalia. Segment IX, in lateral view, arising from within segment VIII, with anterior margin strongly produced anterad ventrally, slightly sinuous dorsally, and pair of short posterodorsal processes; posterolateral margins rounded, membranous; in dorsal view, with deep excision almost twice as deep as ventral excision and with membranous mesal area apically; in ventral view, nearly V-shaped anteriorly, broadly concave posteriorly. Segment X, in lateral view, fused with dorsum of segment IX, oblong and membranous; in dorsal view, with deep mesal incision, pair of lateral lobes tapering apically and directed caudad; in ventral view, wrapping ventromesad around subgenital plate, producing pair of mesolateral lobes each bearing one robust seta directed mesad. Subgenital plate, in lateral view, developed as thin triangular plate with ventral beak; in ventral view, bearing two short apical setae and two long lateral setae. Inferior appendages, in lateral view, long and tapered to acute setose apices; in ventral view, each long and slightly curved mesad at 3/4 length. Bracteoles, in lateral view, setose and blade-like; in dorsal and ventral views, oblong and rounded apically. Phallus long with slight median constriction; round, thin, and posteriorly extending paramere. Phallus apex long and tubular, with membranous tip, pair of apical, robust, and sclerotized hooks; ejaculatory duct short, protruding mesally.

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 

Paratype. 5 males, same data as holotype (alcohol; INPA)GoogleMaps  .

Distribution: Brazil (Roraima, type locality only).

Etymology. The epithet “cruviana”, a noun used in apposition, refers to the popular oral word used by the inhabitants of Roraima to designate a strong and cold wind that occurs in the savanna grassland vegetation during the early morning.


Museu Paraense Emilio Goeldi


Instituto Nacional de Pesquisas da Amazonia