Itauara rupicola, Alves & Dumas & Nessimian & Santos, 2023

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, European Journal of Taxonomy 885, pp. 99-133 : 120-122

Itauara rupicola sp. nov.

urn:lsid:zoobank.org:act:1B42DDFE-5391-4E25-B5DD-D93BB5860129

Fig. 9

Differential diagnosis

This new species belongs to the brasiliana species group and, in the strict consensus tree, it appears in an unresolved polytomy within this species group. This new species can be easily recognized by the tergum X with three acute processes in dorsal view, with the median process being larger than the lateral ones ( Fig. 9A–B ). Moreover, the nearly straight shape of the phallicata, and the basally bifid parameres also easily distinguish I. rupicola sp. nov. from other species.

Etymology

From the Latin ‘ rupes ’ (‘rock’), and ‘- cola ’ (‘inhabitant’), in reference to the typical environment surrounding the type locality, the “Campos Rupestres” or “Campos Rupícolas”.

Material examined

Holotype BRAZIL • ♂; Minas Gerais, Morro do Pilar, Parque Nacional da Serra do Cipó, Córrego Água Escura ; 19°16′02.7″ S, 43°30′56.8″ W; alt. 1239 m; 18–21 Nov. 2018; A.A. Alves, A.P.M. Santos, A.S. Freitas and A.L.D. Ferreira leg.; Malaise trap; DZRJ 7629 .

Paratypes BRAZIL • 1 ♂; same collection data as for holotype; DZRJ 7630 • 2 ♂♂; same collection data as for holotype; 11–14 Oct. 2019; A.A. Alves, J.L. Nessimian, L. Hoehne and G.A. Jardim leg.; Malaise trap; MNRJ-ENT10-187 • 2 ♂♂; same collection data as for holotype; Parque Nacional da Serra do Cipó, Trilha para o Córrego Água Escura , Córrego Indaiá ; 19°15′47.9″ S, 43°31′28.8″ W; alt. 1295 m; 18 Nov. 2018; A.A. Alves and A.P.M. Santos leg.; Pennsylvania light trap; DZRJ 7633 • 1 ♂; same collection data as for holotype; Jaboticatubas, Parque Nacional da Serra do Cipó, Trilha para Cachoeira da Farofa, Córrego da Farofa ; 19°23′2.6″ S, 43°34′49.1″ W; alt. 812 m; 5–10 Jan. 2019; A.A. Alves, J.L. Nessimian, L. Hoehne and A.L. Henriques-Oliveira leg.; Malaise trap; DZRJ 7632 .

Description

Adult

Length of each forewing 2.7–3.0 mm (n = 7). 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; forks I and II sessile; fork III petiolate, with stem longer than fork; Cu1 vein complete, reaching wing margin; Cu1 and Cu2 veins intersecting near anastomosis; Cu2 vein with row of erect setae; A3 vein absent; crossveins constituting relatively straight transverse line; Rs vein shorter than discoidal cell. Hind wings with margins approximately parallel, with apical portion tapered; forks II and V present; Sc and R1 veins converging very 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 and inferior appendages absent. Segment IX broad medially; anterior margin rounded; posterolateral margin slightly sclerotized. Tergum X partially fused to tergum IX; in dorsal view, dorsomesal margin with elongate, digitate mesal process, downturned in lateral view ( Fig. 9A–B ); dorsolateral margin with pair of lateral setose processes, shorter than dorsomesal process ( Fig. 9AB ); ventrolateral margin, with pair of flange-like processes outwardly directed, with small upper protuberances, each one with apical setae (number variable in left-right sides), and larger lower digitate lobe ( Fig. 9A, C ); and medially, between ventrolateral processes, with long digitate process ( Fig. 9A ). Parameres present, sclerotized, paired, bifid, arising ventrobasally from fused endotheca and phallobase; lower process long, rod-like, slender, upturned, with apical portion slightly broader, directed dorsally, apices pointed ( Fig. 9A, C ); upper process, short, acute, and downturned in lateral view ( Fig. 9A ), with outwardly projecting apex in ventral view ( Fig. 9C ). Phallobase reduced, slightly sclerotized. Phallicata with long sclerotized dorsally flattened sheath, almost straight ( Fig. 9A ); dorsobasally with strong curvature posteriorly directed ( Fig. 9A ). Endophallus membranous, enlarged, and convoluted, with membranous flanges produced ventrobasally, almost forming hollow tube, and with slightly sclerotized lobe basoventrally ( Fig. 9A, C ).

Female and immatures

Unknown.

Distribution

Brazil [state of Minas Gerais (municipality of Morro do Pilar)].

Figures

Fig. 9. Itauara rupicola sp. nov., holotype (DZRJ 7629), male genitalia. A. Lateral view. B. Dorsal view. C. Ventral view. Scale bar = 0.1 mm.