Mahanarva ( Ipiranga ) obliqua, Meneghetti & Biganzoli-Rangel & Carvalho & Paladini, 2025

3.4. 11. Mahanarva ( Ipiranga) obliqua sp. nov.

Figures 6 H View Figure 6 , 12 A – L View Figure 12 , 14 A – D View Figure 14

Measurements male / female.

Head length: 1.25 / 1.32; head width: 2.25 / 2.33; pronotum length: 2.31 / 2.45; pronotum width: 3.72 / 4.05; tegmen length: 10.3 / 10.9; tegmen width: 3.3 / 3.6; total length: 12.2 / 13.25 (in mm).

Diagnosis.

Tegmina black with an orange spot near base and two wide, orange, transversal bands, zigzag-like; subgenital plates with a rounded apex, dorsal margin without elevation, paramere with subtriangular apex.

Description.

Holotype. Head black, with a slight pubescence, vertex subretangular with a slightly marked median carina, ocelli closer to each other than to eyes, separated by about one and a half diameter from each other; tylus quadrangular, black, with its basal third with a slightly marked carina, becoming indistinct towards the apex (Fig. 12 A View Figure 12 ); antenna black, pedicel sparsely setose; basal body of flagellum subcylindrical with a single and short arista shorter than the pedicel length. Postclypeus black, inflated, with convex profile, longitudinal carina strongly marked and lateral grooves slightly marked (Fig. 12 B, C View Figure 12 ); rostrum reddish, barely reaching mesocoxae. Pronotum black, hexagonal, with muscular insertions slightly apparent, median carina slightly marked, anterior and anterolateral margins straight; posterolateral with slight sinuosity and posterior margin medially grooved, humeral angles acute; scutellum black, with slight central concavity and slightly marked horizontal grooves. Tegmina (Fig. 12 A, B View Figure 12 ) black, narrow, with an orange spot near base and two wide, orange, transversal bands, zigzag-like, one located between basal and medium third and another between medium and apical third; vein R thickened at base, M and Cu 1 united at base and A 1 and A 2 distincts, apical reticulation developed, prominent venation. Hindwings hyaline, with brown venation, Cu 1 thickened at the base, hamuli with three to four spines. Legs reddish, metathoracic femur with a small apical spine; tibia with two lateral spines, basal one smaller than the ones located at apical crown, which has 12–14 spines arranged in two rows; basitarsus with three irregular rows of spines covered by long and dense setae; subungueal process present. — MALE: Genitalia: Pygofer (Fig. 12 D, E View Figure 12 ) with one subtriangular process between anal tube and subgenital plate; subgenital plate narrowing toward its extension with apex rounded with denticles on inner surface; basal process of dorsal margin short and rounded. Paramere (Fig. 12 F View Figure 12 ) subretangular, with a subtriangular apex, dorsal margin rounded and developed, subapical hook-like spine directed outwards and forward. Aedeagus (Fig. 12 G – I View Figure 12 ) subcylindrical, narrowing towards apex, with a pair of straight dorsal processes, shorter than half length of shaft and inserted medially. — FEMALE: Morphology similar to that of the male, but slightly larger in relation to total body length. First valvula of ovipositor long (Fig. 12 J, K View Figure 12 ), with slightly acute apex, basal process rounded and undeveloped, directed downwards; second valvula long (Fig. 12 L View Figure 12 ), with rounded apex and dorsal margin covered by teeth in apical third; third valvula short and wide, with rounded apex, covered ventrally by long setae.

Remarks.

This species was initially considered as a variation of M. ( I.) rubicunda , however upon closer examination, it became evident that significant differences exist in the morphological characters such as the tegmina pattern and the male genitalia. In fact, M. ( I.) obliqua sp. nov. presents several morphological similarities regarding other Ipiranga species: a rounded and developed dorsal margin of paramere, a subapical hook-like paramere spine, and a subcylindrical aedeagus with a pair of straight dorsal processes.

Etymology.

In Latin, ‘ obliquum’ means zigzag shape, thus this species name refers to the tegmina pattern with transversal bands.

Distribution.

Brazil ( Paraná and Santa Catarina).

Material examined.

BRASIL, Holotype ♂: Paraná: Piraquara, riacho próximo à estrada, ativa , 25°31′01″S 49°00′32″W, 909 m a. s. l, 20.iii.2024, AP Pinto, L. Polizelli, & RC Varella leg. ( DZUP) GoogleMaps ; Paratypes: same data as holotype, 3 ♂, 2 ♀ GoogleMaps ; idem: 07.xii.2023, AP Pinto, J Ehlert, MUM de Almeida & RC Varella leg., 7 ♂, 1 ♀ ( DZUP) GoogleMaps ; Curitiba , 28.vii.1983, L. L. Leite leg. 1 ♂, 1 ♀ ( DZUP 449663 ) ; idem, 3.ix.1983, R. Amador leg., 2 ♀ (1 MCTP, 1 DZUP 449664 ) ; idem, Guajuvira , 8.vi.1980, A. Claret, leg., 1 ♂ ( MCTP) ; idem, Quatro Barras , 22.ii.1969, Becker & Laroca, 1 ♀ ( DZUP 449660 ) ; idem, Jaguariaíva , (no collect data), M. Linsing leg., 2 ♀ ( DZUP 449667 , DZUP 449668 ) ; Santa Catarina: Três Barras , 12.iii.1995, Jorge Cheren leg., 1 ♀ ( MCTP) ; 1 ♀ no data ( MCTP) .

Adicional material examined.

BRASIL, Paraná: Piraquara, riacho próximo à estrada, ativa , 25°31′01″S 49°00′32″W, 909 m a. s. l, 20.iii.2024, AP Pinto, L. Polizelli, & RC Varella leg. 6 ♂, 2 ♀ ( DZUP) GoogleMaps .