Abana amazonica, Sauceda-V & Malenovský & Takiya, 2025

Abana amazonica Sauceda-V & Takiya, sp. nov.

( Fig. 24 View FIGURE 24 )

Diagnosis. Body coloration ( Fig. 24A, B View FIGURE 24 ) mostly ivory yellow and dark brown to black; anterior portion of crown ( Fig. 24A View FIGURE 24 ) and dorsal portion of frons ( Fig. 24B View FIGURE 24 ) ivory yellow, crown with contrasting dark maculae posteriorly and frons with contrasting dark maculae inferiorly; pronotum ( Fig. 24A View FIGURE 24 ) reddish brown; anterior portion with a marginal black stripe interrupted medially, with a pair of anterolateral yellow maculae; male forewing ( Fig. 24A, B View FIGURE 24 ) completely black. Crown anterior margin ( Fig. 24A View FIGURE 24 ) subtriangular, apex truncate; anterior portion ( Fig. 24B View FIGURE 24 ), in lateral view, straight, not inflated; disk with a distinct depression; M-shaped elevation bordering posterior margin present and conspicuous. Connective ( Fig. 24E View FIGURE 24 ) with arms converging anteriorly; base of arms with a Ushaped dorsal rim. Style ( Fig. 24E View FIGURE 24 ) with apodeme wide and long, almost as long as apophysis length; inner lobe subtriangular; apical portion as long as wide; not extending to connective apex. Aedeagal shaft ( Fig. 24F–H View FIGURE 24 ) with anterodorsal projections slender and long. Dorsal connective ( Fig. 24F–H View FIGURE 24 ) sclerotized; submedian acute process conspicuous.

Description. Total length: male (n = 1) 18.7 mm.

External structures. Crown ( Fig. 24A View FIGURE 24 ) without pubescence; anterior margin subtriangular, apex truncate; in lateral view, anterior portion ( Fig. 24B View FIGURE 24 ), straight, not inflated, forming an acute angle with face; disk with a distinct depression; with conspicuous M-shaped elevation on posterior margin. Ocelli located on imaginary line between anterior eye angles; each slightly closer to adjacent anterior eye angle than to midline. Frons convex medially. Pronotum ( Fig. 24A View FIGURE 24 ) surface without pubescence. Forewing ( Fig. 24A, B View FIGURE 24 ) with punctures distributed throughout tegmen; base of fourth apical cell slightly more distal than base of third apical cell. Hind leg with femoral setal formula 2:1:0. Other characters as in generic description.

Male coloration. Body ( Figs. 24A, B View FIGURE 24 ) mostly black. Crown ( Fig. 24A View FIGURE 24 ) yellow, except for a black area on posterior portion ( Fig. 24A View FIGURE 24 ), which is complete between antennal ledges and with anterolateral sides extending anteriorly. Frons ( Figs. 24B View FIGURE 24 ) with upper two thirds varying from ivory to yellow; ventral third dark, as well as clypeus. Gena ( Figs. 24B View FIGURE 24 ) with anterodorsal portion ivory to yellow; posteroventral portion black, continuing black area of crown to clypeus. Pronotum ( Fig. 24A View FIGURE 24 ) reddish brown, with two anterolateral ivory maculae continuing laterally to proepimeron; anterior portion with a black broad stripe, medially interrupted. Mesonotum ( Fig. 24A View FIGURE 24 ) completely black or becoming brown at posterior portion, posterior to scutellar suture. Thorax ( Fig. 24B View FIGURE 24 ), in lateral view, with pleurites mostly ivory to yellow, with some brown areas; anepisternum black. Forewing ( Fig. 24A, B View FIGURE 24 ) mostly black but turning brown at apex. Legs ( Fig. 24A View FIGURE 24 ) almost completely yellow, with some small brown areas mostly at apices of tibiae and tarsomeres of all legs. Abdomen ( Fig. 24B View FIGURE 24 ) black, with yellow areas along posterolateral margins of tergites and posterior margins of sternites.

Male terminalia. Style ( Fig. 24E View FIGURE 24 ) with apodeme wide and almost as long as apophysis lenght; inner lobe subtriangular. Other characters as in A. inornata sp. nov.

Female. Unknown.

Distribution. Peru (San Martín Region).

Material examined. Type material: Holotype, ♂: PERU: San Martín: Amazonas, Aguas Verdes, Bagua / Tarapoto Rd (5N) AT km 403, 5º41’23”S, 77º38’13”W, 1125 m a.s.l., 2008-ix-26 / 2008-x-03, Malaise, M.E. Irwin & G. Antón Amaya, DNA voucher Entomologia DZRJ ENT6384 ( MUSM). GoogleMaps

Etymology. The specific epithet ‘ amazonica ’ is an adjective and refers to the ecosystem of the type locality where the species was found, which corresponds to the Peruvian Amazon Forest.

Remarks. The general external morphology and characters of the male genitalia of this species are very similar to the other species of the A. horvathi complex but A. amazonica sp. nov. can be clearly distinguished from A. colombiana sp. nov. by the following characters: (1) hind leg with femoral setal formula 2:1:0 (2:0:0 in A. colombiana sp. nov., although this characters may vary intraspecifically), (2) anterolateral ivory-colored maculae on the pronotum ( Fig. 24A View FIGURE 24 ), which are well extended transversally in dorsal view (very short and dorsally inconspicuous in A. colombiana sp. nov., Fig. 25A View FIGURE 25 ), (3) base of the connective arms ( Fig. 24E View FIGURE 24 ) with a U-shaped dorsal rim (Vshaped in A. colombiana sp. nov., Fig. 25E View FIGURE 25 ), and (4) inner lobe of style ( Fig. 24E View FIGURE 24 ) subtriangular (subquadrate in A. colombiana sp. nov., Fig. 25E View FIGURE 25 ). Abana amazonica sp. nov. cannot be distinguished from A. horvathi s.s. on the basis of the external morphology of the males or the genital characters. However, there is a possibility that morphological diagnostic characters will be found once females of this species are discovered. We have decided to describe this species based on the molecular delimitation presented ( Fig. 2 View FIGURE 2 ) and its distribution in the Peruvian Amazon piedmont far from most A. horvathi s.s. localities ( Fig. 30 View FIGURE 30 ). Three specimens from the collection of L. Melichar in MMBC, identified here as A. horvathi s.s., are a notable exception. They were also collected in the province of San Martín in Peru, relatively close to the type locality of A. amazonica sp. nov. ( Fig. 30 View FIGURE 30 ): two males from the localities “Cumbase” (= Cumbaza river) and “Juanfué” (= Juanjui, misspelled), and the lectotype female of A. regia Melichar , also from “Cumbase” ( Fig. 29J–L View FIGURE 29 ). We believe that these three specimens should be conspecific, and they could also be conspecific with the holotype of A. amazonica sp. nov. (which could make the name A. regia valid as a senior synonym of A. amazonica ). However, due to the lack of precise diagnostic morphological characters and DNA barcode sequences (or other evidence) that would allow a more solid assignment than just based on relative geographic proximity, we do not consider these three specimens to be conspecific with A. amazonica sp. nov. and instead list them under A. horvathi s.s.