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

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

Figures 6 I View Figure 6 , 13 A – L View Figure 13

Measurements male / female.

Head length: 0.84 / 0.97; head width: 1.87 / 2.02; pronotum length: 1.57 / 1.83; pronotum width: 2.75 / 3.01; tegmen length: 7.67 / 8.35; tegmen width: 2.33 / 2.4; total length: 9.1 / 10.22 (in mm).

Diagnosis.

Tegmina brownish with one complete, yellowish transverse band between basal and median third, and an incomplete transverse band between median and apical third; subgenital plate not excavated at the basal portion and with an acute apex; paramere apex rounded.

Description.

Head black, vertex subretangular with a slightly marked median carina in the apex, but indistinct on its base, ocelli closer to each other than to eyes, separated by about one diameter from each other; tylus quadrangular, black, with its basal third with slightly marked carina, becoming indistinct towards the apex (Fig. 13 A View Figure 13 ); antenna brownish, 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 present, lateral grooves slightly marked (Fig. 13 B, C View Figure 13 ); rostrum with second segment yellowish and third segment brownish, reaching the base of 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. 13 A, B View Figure 13 ) brownish, narrow, with one transverse complete band yellowish between basal and median third and an incomplete yellowish band resembling rounded spots, between median and apical third; veins M and Cu 1 united at base, veins A 1 and A 2 distincts, apical reticulation undeveloped, prominent venation. Hindwings hyaline, with brownish venation, Cu 1 thickened at the base, hamuli with three spines. Legs light brown, 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 rows of spines covered by long setae; subungueal process present. — MALE: Genitalia: Pygofer (Fig. 13 D, E View Figure 13 ) with one finger-like processes between anal tube and subgenital plate; subgenital plate long, not excavated at the basal portion, covered with small tooth-like spines, and narrowing towards the apex, which is acute. Paramere (Fig. 13 F View Figure 13 ) subretangular, dorsal margin rounded and developed, apex rounded; subapical hook-like spine directed outwards and forward. Aedeagus (Fig. 13 G – I View Figure 13 ) subcylindrical, narrowing towards apex with a pair of straight dorsal processes, shorter than half the length of the shaft and inserted between middle and apical third of aedeagus. — FEMALE: Morphology similar to that of the male, but slightly larger in relation to total body length. First valvula of ovipositor long (Fig. 13 J, K View Figure 13 ), with acute apex, basal process rounded and developed, directed downwards; second valvula (Fig. 13 L View Figure 13 ) long 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 being treated as M. ( I.) aguirrei mainly by the pattern and coloration of the tegmina, and the phylogenetic analysis presented here corroborates a close relationship between these species (Fig. 4 View Figure 4 ). Despite this, they differ in several aspects in relation to male genitalia: while M. ( I.) aguirrei presents a long subgenital plate with rounded apex and a rounded depression on its basal third, M. ( I.) nefasta sp. nov. has an acute subgenital plate apex. Moreover, M. ( I.) aguirrei has a subquadrangular paramere apex, which differs from the rounded paramere apex seen in M. ( I.) nefasta sp. nov. In comparison to the other species within the subgenus, this species presents a more developed basal process of the ovipositor.

Etymology.

The new species name is due to the fact that it had long been mistaken for M. ( I.) aguirrei in our morphological analyses.

Distribution.

Brazil ( Minas Gerais).

Material examined.

BRASIL, Holotype ♂: Minas Gerais: Uberaba , 04.i.1984, Koller, W. W. leg. ( MCTP) ; Paratypes: same data as holotype, 8 ♂, 6 ♀ ( DZUP) .

Adicional material examined.

BRASIL, Minas Gerais: Uberaba , 04.i.1984, Koller, W. W. leg. 9 ♂, 3 ♀ ( MCTP) .