Itauara caparao, 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 : 107-109

Itauara caparao sp. nov.

urn:lsid:zoobank.org:act:34C47854-6FDF-4417-8780-EA9EB0F5F3EE

Fig. 3

Differential diagnosis

This new species belongs to the amazonica species group. As mentioned for the preceding species, Itauara caparao sp. nov. and I. bispinata sp. nov. form a clade supported by the tergum X without median process at posterior margin [67(0)]. This clade was recovered as sister group to the brasiliana species group clade. As I. jamesii Robertson & Holzenthal, 2011 and I. spiralis Robertson & Holzenthal, 2011 , I. caparao has a very broad ventrolateral processes on the tergum X, presenting several small irregular lobes ( Fig. 3A ). However, in the new species this processes are much larger and widely projected laterally. In dorsal view, the tergum X has two broad subtriangular processes ( Fig. 3F ), which also was not observed in any other species. The phallicata is dorsally directed in this new species, with a uniform curvature along its length ( Fig. 3A ).

Etymology

The specific epithet, used as a noun in apposition, refers to the region where the holotype was collected, the Serra do Caparaó mountain range.

Material examined

Holotype BRAZIL • ♂; Espírito Santo, Dores do Rio Preto, Pedra Menina, Parque Nacional do Caparaó , afluente do Rio Preto (cachoeirinha-paredão); 20°29′26.2″ S, 41°49′17.1″ W; alt. 1507 m; 11−15 Jan. 2015; J.L. Nessimian, A.L.H. Oliveira, S.P. Gomes and C.S. Portela leg.; Malaise trap; DZRJ 7647 .

Paratypes BRAZIL • 2 ♂♂; same collection data as for holotype; DZRJ 7631 • 3 ♂♂; same collection data as for holotype; MNRJ-ENT10-185 • 1 ♂; same collection data as for holotype; 30 Mar.–3 Apr. 2016; J.L. Nessimian, A.L.H. Oliveira, A. Antunes, A. Alves and J. Queiroz. leg.; DZRJ 7646 .

Description

Adult

Length of each forewing 2.8–3.4 mm (n = 7). Head, thorax, and appendages, in alcohol, light brown. Forewings covered with brown setae, slightly broad after anastomosis, with margins approximately parallel, apex slightly rounded; 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 separating at 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 hairlike. Sternum VI with digitate process, with acute apex.

Male genitalia

Preanal appendages absent. Segment IX ventrally narrow ( Fig. 3G ), broad medially ( Fig. 3A ); anterior margin rounded; posterolateral margin slightly sclerotized. Tergum X partially fused to tergum IX; dorsomesal margin without processes ( Fig. 3F ); dorsolateral margin with paired, broad, slightly downturned, subtriangular processes ( Fig. 3F ); ventrolateral margin with paired, very broad flange-like setose process consisting of several small irregular lobes ( Fig. 3A, F–G ), which vary ( Fig. 3B–D ). Inferior appendages present as single setose process, apically bifid, with each apex pointed ( Fig. 3G ). Parameres present, paired, inserted in membranous lobe, arising laterally from endotheca, sclerotized and rod-like, sinuous, apices pointed and downturned in lateral view ( Fig. 3A ), outwardly directed in ventral view ( Fig. 3G ). Phallobase reduced, slightly sclerotized; laterally with pair of small, sclerotized concave discs ( Fig. 3A, G ). Phallicata forming long, sclerotized dorsal sheath extending from phallobase, with apex spoon-like, and with dorsally directed curvature along its length ( Fig. 3A ), with some specimens having apex more rounded ( Fig. 3E ). Endophallus membranous, large, and convoluted ( Fig. 3A, G ).

Female and immatures

Unknown.

Distribution

Brazil (state of Espírito Santo [municipality of Dores do Rio Preto]). This is the first record of Itauara for this state.

Figures

Fig. 3. Itauara caparao sp. nov., holotype (DZRJ 7647),male genitalia. A. Lateral view. B–D. Variations at the ventrolateral processes of tergum X found in three paratypes. E. Variation at the phallicata apex found in a paratype. F. Dorsal view. G. Ventral view. Scale bar = 0.1 mm.