Hermanella amere, Do Nascimento, Jeane M. C. & Salles, Frederico F., 2013

Do Nascimento, Jeane M. C. & Salles, Frederico F., 2013, New species of Hermanella complex (Ephemeroptera: Leptophlebiidae) from Brazilian Atlantic Forest, Zootaxa 3718 (1), pp. 1-27 : 3-5

Hermanella amere , sp. nov.

( Figs. 1 and 2 )

Diagnosis. Male imago: (1) forewing with costal and subcostal area orangish, longitudinal veins dark brown, cross veins strongly washed with black ( Figs. 1 A, 2A); (2) subgenital plate yellow, with wide projection near inner base of forceps ( Fig. 2 D); (3) penes divided on distal half ( Fig. 2 E); (4) penis lobe with ventral, robust, posteriorly directed spine ( Figs. 2 E, F); (5) general coloration of body yellowish orange ( Figs. 1 A, B).

Male imago. Length: body, 8.2–8.6 mm; forewing: 10.3–11.2 mm; hind wing: 1.2–1.5 mm.

Head. Dorsal region yellowish, with brown marks; ventral region whitish, slightly washed with orange. Upper portion of compound eye orangish, lower portion black; ocelli whitish, surrounded by dark gray. Antenna. Scape yellowish, pedicel brown, flagellum light yellow translucent.

Thorax. Pronotum yellowish, margins black; with medial and submedial longitudinal strip and two pairs of lateral transverse black strip. Mesonotum orangish yellow, medial region slightly washed with grayish brown; scutellum whitish yellow; anterior phragma and lateroparapsidal suture black; posterior scutal protuberance slightly washed with gray. Metanotum yellow, with lateral margin black. Pleurae yellow, with black marks; membranous region whitish. Sterna yellow washed with black, prosternal carina with median region narrow and broad base ( Fig. 1 C). Wings. ( Figs. 1 A, B and 2A–C). Membrane hyaline. Forewing with costal and subcostal area orangish; longitudinal veins dark brown, cross veins strongly washed with black; hind wing grayish brown at base; longitudinal veins yellowish; cross veins in costal, subcostal and radial sectors grayish brown, remainder hyaline. Legs. Coxae and trochanters yellowish, washed with gray. Leg I: Femur orangish slightly washed with gray; with incomplete apical black band; tibia orange, washed with black; tarsus black. Legs II and III orangish, femora with incomplete apical black band, tarsi yellowish.

Abdomen. Terga with lateral and posterior margins black; tergum I almost completely washed with black; terga II–VI yellowish translucent, with medial region and posterolateral angle washed with black; terga VII–IX orangish yellow, tergum VII with a weak anteromedial black mark; terga VIII with a white mark extending from anterolateral angle to medial area; tergum X yellow. Abdominal sternum I yellowish brown; sterna II–VI yellow translucent. Genitalia ( Figs. 2 D–F). Subgenital plate yellow, with wide projection near inner base of forceps ( Fig. 2 D). Forceps. Segment I and II yellowish, II slightly washed with orange; segment III whitish; segment II 0.3 length of segment I, 1.6 length of segment III. Penes divided on distal half, each lobe with ventral, robust and posteriorly directed spine ( Figs. 2 E, F); penis lobe whitish yellow; spine orangish. Caudal filaments alternating bands with the following coloration: orangish yellow, whitish yellowish and dark brown.

Female imago. Length: body, 10.0– 11.5 mm; fore wing, 12.0– 12.5 mm; hind wing, 2.0– 2.3 mm. Color pattern similar to male imago except for the color more yellowish. Sternum IX cleft apically.

Nymph. Unknown.

Etymology. The specific epithet is derived from the tupi-guarani amere (= smoke / fumaça in Portuguese), an allusion to waterfall that gave name to the Parque Estadual da Cachoeira da Fumaça, the only locality so far where the new species has been found.

Material examined. Holotype: Male imago (light trap), Brazil, Espírito Santo State, Alegre, Cachoeira da Fumaça (S 20°37'52.2", W 41°36'12.9") 447m, 28/v/2010, KB Angeli, KB Del-Carro, P Barcelos-Silva cols. (INPA). Paratypes: four male imagos and three females, same data of holotype (two male, one female at CZNC; one male at DZRJ; one male, one female at IBN).

Comments. Hermanella amere sp. nov. appears to be related to Hermanella guttata Domínguez & Flowers, 1989 , sharing with this species several characteristics as the general pattern of coloration of the wings, predominance of orange color in body parts as well as some similarities in general morphology of male genitalia - among them the presence of broad projection in the subgenital plate and penis robust spine. However, these two species can be easily distinguished from each other by the abdominal color pattern and shape of penis lobe.

Figures

FIGURE 1. Hermanella amere, sp. nov., male imago. A) lateral view; B) dorsolateral view; C) prosternum.

FIGURE 2. Hermanella amere, sp. nov., male imago. A) forewing; B) hind wing; C) enlarged hind wing; D) male genitalia, ventral view; E) detail of penes, ventral view; F) penis lobe, lateral view.