Anaulacomera (Cervicercora) vieiradiasi Nogueira & Fianco, 2025

Anaulacomera (Cervicercora) vieiradiasi Nogueira & Fianco View in CoL sp. nov.

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( Figures 2 A–H View FIGURE 2 ; 3A–C View FIGURE 3 ; 4A–D View FIGURE 4 )

Diagnosis: The new species is distinguished from its congeners by the combination of the following characters: a globose apex on the fastigium of the vertex; a whitish medial line extending from the fastigium of the vertex to the abdomen; a pronounced curvature in the additional process of the male cerci; long setae at the base of male cerci, and the parallel styliform process of the male subgenital plate.

Description: Holotype male ( Fig. 2 View FIGURE 2 ): Small and green, with a medial yellowish line extending from the head to the abdomen, and a dark brown stridulatory area ( Fig. 2A View FIGURE 2 ). Head ( Fig. 2B, D View FIGURE 2 ): fastigium of the frons triangular, not touching the fastigium of the vertex, apex pointed; ocellus absent. Antennal sclerites dilated at the apex, near the fastigium of the vertex, and slightly expanded at the base of the fastigium of the frons. Fastigium of the vertex elevated; hourglass-shaped; apex rounded, with a small sulcus in middle, not present in basal region and not reaching the apex; reddish to purplish on lateral edges, pinkish on apex. A yellowish band extends from the fastigium of the vertex to the pronotum. Eyes brownish; medial region near fastigium of the vertex, reddish to purplish, and yellowish near the vertex. Thorax: Pronotum green, with a medial yellowish line extending toward the abdomen, that presents small brownish punctuations. Pronotal disc ( Fig. 2D View FIGURE 2 ) with anterior margin straight; posterior margin convex; furcal sulci V-shaped. Lateral carinae almost absent. Lateral lobes ( Fig. 2D View FIGURE 2 ) slightly longer than high; anterior margin slightly concave; posterior margin convex, demilune shaped; inferior margin slightly sinuous; humeral sinus in an angle of ca. 75º. Tegmina shorter than hindwings ( Fig. 2A View FIGURE 2 ); anal and costal margins parallel ( Fig. 2A View FIGURE 2 , 3A View FIGURE 3 ); ScA vein quite small and curved to the costal area; ScP vein long, reaching the apex of the tegmen; no evident crossveins from the ScP to the costal margin; R following ScP in all extension; RP leaving R before middle of the tegmen; RP branching in the apical third of the tegmen, after half its length; RA vein branches at the apex of the tegmen; M vein straight until the half of the tegmen, after which it curves towards the anal margin, quite long with no major bifurcations; several crossveins extends from M towards the anal margin (3A). A1 vein dark brown ( Fig. 3A, B View FIGURE 3 ); stridulatory with brownish veins (3A, C). Femur III at least 3.8 times longer than the pronotum. Mesobasisternum triangular; anterior margin concave; lateral lobes reduced and globose. Metabasisternum globose, elevated in the middle; anterior margin convex; lateral lobes rounded. Abdomen: T ergite X not projected backwards, depressed in the middle of the posterior region. Epiproct triangular and moderately long. Cercus ( Fig. 2E, F, G, H View FIGURE 2 ) long, with one spine and four processes; ventroproximal process spinulose, longer than wide; Additional lobe on the dorsal part of cercal base directed medially, near the ventroproximal process, as long as one third of the cercus length, with several minute spines on ventral edge; with two lobules in the ventral edge; distal process much longer than wide; cercal base bearing several long setae. Subgenital plate ( Fig. 2F View FIGURE 2 ) short, with a base as wide as apex; posterior margin notably concave.

Female: ( Fig. 4 View FIGURE 4 ) Similar in size to male, with comparable colouration and general morphology. The tegmina bear two black spots at the base (4C). The ovipositor is long (4D), measuring between two and 2.3 times the length of the pronotum, and is curved upwards. The subgenital plate is short, with a triangular morphology, featuring a globose apex.

Type material: Holotype male, ‘ Brasil, PR, Matelândia, Prq.\ Nacional do Iguaçu , 220m \ 25.3627ºS, 53.8100ºW \ 06–09.xi.2021 Coleta ativa \ diurna M. Fianco & N. Szinwelski col.’, deposited at “Coleção Entomológica Padre Jesus Santiago Moure” ( DZUP, Curitiba, Brazil). GoogleMaps Paratypes: three males, same data as holotype, deposited at DZUP; GoogleMaps one male and one female, same data but ‘ coleta ativa / noturna’ deposited at DZUP. GoogleMaps Two males and one female, same data ‘ Céu Azul, Paraná \ Brasil \ Pq. N. do Iguaçu ; \ Projeto Floriano \ -25.1540868 \ 53.8456201 \ 21.I.2023, Coleta ativa \ N. Szinwelski’, deposited at MNRJ. GoogleMaps Three females, same data ‘ São Pedro do Iguaçu, \ Paraná, Brasil, Parque \ Est. Cabeça do \ Cachorro \ 28.I.2023 \ -24.915598 \ -53.9130057 \ N. Szinwelski & \ T. M. G. Nogueira’, deposited at MNRJ. GoogleMaps

Measurements (mm): Holotype: BL: 16; TegL: 21; PrL: 4.3; PrH: 3; FLiii: 15; TLiii: 16; SPL: 4.1; CL: 2.5; SFL: 0,9. Paratypes: BL: 14–16; TegL: 21; PrL: 4; PrH: 2.5–3; FLiii: 15.5; TLiii: 18; SPL: 2.5–3; CL: 2.4 SFL: 0.9; Female: BL: 17; TegL: 23; PrL: 3–3.5; PrH: 2; FLiii: 16–17; TLiii: 18–19; OL: 7.

Etymology: The specific epithet honours Prof. Dr. Eliseu Vieira Dias, an important Brazilian scientist and professor, in recognition of his contributions and in memory of his legacy. Dr. Eliseu taught classes to the species authors, T. M. G. Nogueira and M. Fianco, playing an important role in their academic development.

Comparison: The new species is classified in the Virgula Group of the subgenus A. (Cervicercora), which comprises five species, based on the morphology of the male cerci, which are characterized by their elongated form with one spine and four processes, including a spinulose ventroproximal process (as stated by Gorochov, 2020, 2021). The new species is quite similar to A. (Cervicercora) parviramus Gorochov, 2020 , differing from it by the shorter ventrodistal lobule of the male cerci, by the more pronounced curvature of the additional process at the base of the male cerci and the smaller ventroproximal process. The tegmina lack the spot seen in A. (C.) parviramus , and the stridulatory vein in the new species is significantly wider and more sclerotized. The mirror area on the left tegmen is reddish whereas it is translucent in A. (C.) parviramus . The anal edge of the right tegmen is sinuous in the new species but straight in A. (C.) parviramus . The apex of fastigium in the new species is larger, globose and distinctly widened to the middle region, while in A. (C.) parviramus the apex is nearly straight and less expanded. The distance between ventral and ventrodistal lobules of the male cercus is less than in A. parviramus . Furthermore, the ventral lobule in A. (C.) parviramus is broader, forming a flap-like structure, while the ventral distal process is longer than in the new species. The styliform process of the male subgenital plate are parallel in the new species but converge in A. (C.) parviramus . Compared to other species of the Virgula Group it differs from A. (Cervicercora) angustissima by its broader male subgenital plate, the curved additional cercal process, and smaller styliform process of the male subgenital plate. It differs from A. (C.) angustissima by having a smaller ventral distal process and ventroproximal lobule. Compared to Anaulacomera (Cervicercora) virgula , the new species has a longer additional process and smaller ventroproximal and ventral processes. Additionally, the male subgenital plate of the new species is not triangular and its styliform process is significantly broader.