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 .