Metrichia camposnovos Neto & Passos 2024
Creators: name: Neto, Jaime De Liege Gama
name: Passos, Mahedy Araujo Bastos
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Hydroptilidae
Metrichia
Metrichia camposnovos

description: Metrichia camposnovos sp nov.
(Figs 3A –4D)
Diagnosis. This new species can be assigned to the Metrichia aberrans Group Flint (1972) due to absence of internal pouches in abdominal segments. Metrichia camposnovos sp nov. resembles Metrichia aberrans Flint 1972 due to the shapes of sternum IX, the dorsal hook, and the inferior appendages, in lateral view. The new species can be distinguished from M. aberrans by the inferior appendages, in lateral view, subtrapezoidal, with their apicoventral margins nearly straight in the new species (apicoventral margins sinuous in M. aberrans). Additionally, the phallus of the new species has a median process that is absent in M. aberrans. For further information and illustrations of M. aberrans, see Flint (1972).
Description. Adult male. Forewing length 2.1 mm (Holotype), ranging from 1.9–2.1 mm (n = 2). General color (in alcohol) dark brown. Head without modifications, with three ocelli; dorsally with two pairs of setal warts; ocellar pair appressed on midline, each subtriangular; occipital pair large, ellipsoid. Antennae unmodified, 18- articulated. Maxillary palpi each 5-articulated; labial palpi 3-articulated. Mesoscutellum broadly subtriangular and with transverse suture. Wing venation reduced in both wings. Tibial spur formula 1-3-4. Abdominal segments without modifications. Sternum VII with ventromesal process. Segment VIII shorter ventrally than dorsally.
Male genitalia. Segment IX membranous dorsally; in lateral view (Fig. 3A) tapering anteriorly; in ventral view (Fig. 3B), ogival and apically round anteriorly, recessed and irregular posteriorly; in dorsal view (Fig. 3C), with round posterior margin. Inferior appendages covered by long setae; in lateral view (Fig. 3A), subtrapezoidal, with dorsal, ventral, and apicoventral margins nearly straight, apicodorsal apex acute; in ventral and dorsal views (Figs 3B, 3C), subtrapezoidal, with acute apicomesal and apicodorsal apices. Dorsal hook about as long as inferior appendages (Fig. 3B); in lateral view (Fig. 3A), downturned apically. Preanal appendages, in lateral and dorsal views (Figs 3A, 3C), round and bearing very long setae. Subgenital plate apparently absent. Tergum X membranous and ogival (Fig. 3C). Phallus tubular, elongate, slender, constricted near mid-length, with median process arising in constriction; with two curved subapical spines arising at nearly same level, one curved to left, other curved to right; apex truncate and membranous; ejaculatory duct sinuous, sclerotized, and not protruding apically (Fig. 3D).
Female, Pupa, Larva, and Egg. Unknown
Holotype male. BRAZIL: Roraima: Iracema municipality, Campos Novos side road (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; CEIPC).
Paratypes. Same data as holotype, 1 male (CEIPC).
Distribution. Roraima state (type-locality)
Etymology. This species is named in reference to the type locality, Campos Novos side road.
description: Published as part of Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos, 2024, Two new species of Metrichia Ross 1938 (Trichoptera: Hydroptilidae) from the Brazilian Amazon biome, pp. 133-140 in Zootaxa 5537 (1) on pages 136-138, DOI: 10.11646/zootaxa.5537.1.7, http://zenodo.org/record/14239387