Itauara mangaratiba Alves & Dumas & Nessimian & Santos 2023, sp. nov.
Creators: name: Alves, André Almeida
name: Dumas, Leandro Lourenço
name: Nessimian, Jorge Luiz
name: Santos, Allan Paulo Moreira
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Glossosomatidae
Itauara
Itauara mangaratiba

description: Itauara mangaratiba sp. nov.
urn:lsid:zoobank.org:act: A3E06D5A-B50A-4DB5-8A60-DAD0EC3F27F4
Fig. 7
Differential diagnosis
This species belongs to the amazonica species group, being recovered as sister group to a clade including I. cristata sp. nov., I. caparao sp. nov., I. bispinata sp. nov., and the brasiliana species group. This new species is similar to I. alexanderi Robertson & Holzenthal, 2011, I. emilia Robertson & Holzenthal, 2011, and I. lucinda Robertson & Holzenthal, 2011, each with tergum X presenting a dorsomesal process that is downturned in lateral view, and with similar ventrolateral processes. However, in I. mangaratiba sp. nov., the lower lobe of ventrolateral process is globose (Fig. 7A) and in those other species it is subquadrate or subtriangular. Moreover, the new species can be recognized by the phallicata, which is slightly sinuous along its length (Fig. 7A); by the apical portion of parameres being slightly outward and downturned (Fig. 7A, C); and by the inferior appendages undivided at apex (Fig. 7C).
Etymology
The specific epithet, used as a noun in apposition, refers to the locality where the holotype specimen was collected. The name ‘Mangaratiba’ comes from the Tupi-guarani language and means “place where there are mangarás”. Mangará or mangarito is an edible plant (Xanthosoma sp., Araceae), similar to taro, that used to be consumed by indigenous people in this region.
Material examined
Holotype BRAZIL • ♂; Rio de Janeiro Mangaratiba, Serra do Piloto, Parque Estadual Cunhambebe, Pousada Mirante Imperial, afl. 1ª ordem do Rio do Saco; 22°54′15.3″ S, 44°01′20″ W; alt. 197 m; 13–15 May. 2017; L.L. Dumas, J.L. Nessimian, A.L.D. Ferreira and J.F. Barbosa leg.; DZRJ 7645.
Paratype BRAZIL • 1 ♂; same collection data as for holotype; DZRJ 7644.
Description
Adult
Length of each forewing 2.7–2.8 mm (n = 2). Head, thorax, and appendages, in alcohol, light brown. Forewings covered with brown setae, slightly broad after anastomosis, with anterior and posterior margins approximately parallel, apex subacute; forks I, II, and III present; Sc and R1 veins not fused; fork I sessile; forks II and III petiolate, with stem longer than fork; Cu1 vein complete, reaching wing margin; Cu1 and Cu2 veins intersecting near of anastomosis; Cu2 vein with row of erect setae; A3 vein absent; crossveins constituting relatively straight transverse line; Rs vein and discoidal cell approximately of same length. Hind wings with margins approximately parallel, with apical portion tapered; forks II and V present; Sc and R1 vein converging near to wing margin; A2 vein absent. Spur formula 1, 4, 4, foretibial spur reduced and hair-like. Segment VI with digitate process, with acute apex.
Male genitalia
Preanal appendages absent. Segment IX ventrally narrow, broad medially; anteroventral margin sinuous; posterolateral margin slightly sclerotized. Tergum X partially fused to tergum IX; dorsomesal margin with single, downturned, elongate process (Fig. 7A–B); dorsolateral margin without processes; ventrolateral margin with paired flange-like setose processes, with upper subtriangular lobe and lower globose lobe. (Fig. 7B). Inferior appendages present as single, broad process, broader basally, with rounded apex bearing long setae, and with pair of small digitate lobes ventrolaterally, each bearing a seta (Fig. 7A, C). Parameres present, paired, inserted in membranous lobe, arising laterally from endotheca, sclerotized and rod-like, long, sinuous, with apical portion ventrally directed (Fig. 7A), and slightly outward (Fig. 7C), apices pointed. Phallobase reduced, slightly sclerotized. Phallicata forming moderate-sized, slightly sinuous, sclerotized, dorsal sheath extending from phallobase, with subacute apex (Fig. 7A). Endophallus membranous, enlarged, and convoluted, divided into upper and lower lobe (Fig. 7A).
Female and immatures
Unknown.
Distribution
Brazil [state of Rio de Janeiro (municipality of Mangaratiba)]
description: Published as part of Alves, André Almeida, Dumas, Leandro Lourenço, Nessimian, Jorge Luiz & Santos, Allan Paulo Moreira, 2023, Born from rock: eight new species of Itauara Müller, 1888 (Trichoptera: Glossosomatidae) from southeastern Brazil, including phylogenetic and distributional comments on the genus, pp. 99-133 in European Journal of Taxonomy 885 on pages 116-118, DOI: 10.5852/ejt.2023.885.2193, http://zenodo.org/record/8205440