Oecetis danielae, Henriques-Oliveira, Ana Lucia, Dumas, Leandro Lourenço & Nessimian, Jorge Luiz, 2014

Henriques-Oliveira, Ana Lucia, Dumas, Leandro Lourenço & Nessimian, Jorge Luiz, 2014, Three new species and new distributional records of Oecetis McLachlan 1877 (Trichoptera: Leptoceridae: Leptocerinae) from Brazil, Zootaxa 3753 (3), pp. 273-282 : 276-277

Oecetis danielae , new species

Figs. 2 A–G

Oecetis danielae sp. nov. appears to be most closely related to O. rafaeli Flint 1991 with which it shares the forewing venation, the long posterolateral processes in the segment IX and the membranous ventral lobe of segment X. In the new species the ventral lobe is bilobed, bearing an apical small seta on each rod-shaped process, while in O. rafaeli it is single, without processes. Furthermore, O. danielae sp. nov. also resembles O. peruviana ( Banks 1924) , O. scoparia Flint 1974 , and O. traini Rueda Martín et al. 2011 in the general structure of tergum X that is divided into a single rod-shaped dorsal lobe and a pair of ventral lobes. However, O. danielae sp. nov. can be easily distinguished by the unique shape of the inferior appendages, which are bilobed, each having an elongate and slender ventral lobe and a club-shaped dorsal arm, resembling those of some species of the Australian O. complexa Group ( Wells 2000). The presence of three long phallic endothecal spines is also a distinctive character state for this species.

Adult. General color (in alcohol) light brown; legs, palps, and antennae light brown; wings dark brown, without spots. Forewings each with R2+3 branched at apex of discoidal cell. Hind wings each with R2+3 branched near apex of wing; M and Cu1 branched ( Fig. 2 A). Length of each forewing: Male, 5.5–6.0 mm (n=4); female, 4.75 mm (n=1).

Male genitalia. Segment IX annular and longitudinally short, without dorsal knobs; anterolateral margins almost straight, posterolateral margins each bearing elongate, rod-shaped lateral process in dorsal half, in lateral view ( Fig. 2 B). Preanal appendages setose, moderately elongate, thumb-shaped, rounded apically ( Figs. 2 B, 2C). Tergum X divided into 2 portions; dorsal portion single, elongate, finger-shaped, setose ( Figs. 2 B, 2C); ventral portion membranous, with pair of rod-shaped lateral processes each bearing short apical seta, with medial Ushaped excision between them in dorsal view ( Figs. 2 B, 2C). Inferior appendages robust, bilobed; in lateral view, each broad at base, with ventral lobe setose, elongate, sinuous, slender, finger-shaped, subacute apically; dorsal lobe club-shaped, slightly longer than ventral lobe, bearing small, rounded, spinous, lateral process ( Fig. 2 B); in ventral view, broad basally, with ventral lobes slender, finger-shaped; dorsal lobe robust, curved mesad, rounded at apex, bearing spine-shaped setae on internal margin ( Fig. 2 D). Phallic apparatus tubular, apex directed posteroventrad; endotheca with 3 long paramere spines, phallotremal sclerite horseshoe-shaped as viewed laterally ( Figs. 2 E, 2F).

Holotype male: BRAZIL: Amazonas: Barcelos, Rio Aracá, Comunidade Bacuquara, 0 0o 00’55.11”N, 63o10’38.75”W, 52 m, 12–14.vi.2010, Malaise [trap], R.R. Cavichioli, J.A. Rafael & D.M. Takiya leg. ( INPA).

Paratypes: BRAZIL: Amazonas: Barcelos, Rio Aracá, boca do Rio Curuduri, 0 0o 05’50.42”N, 63o17’22.27”W, 44 m, 15–19.vi.2010, Malaise [trap], R.R. Cavichioli, J.A. Rafael & D.M. Takiya leg., 4 males, 4 females ( DZRJ 3526); Barcelos, Rio Aracá, Comunidade Bacuquara, 0 0o 00’55.11”N, 63o10’38.75”W, 52 m, 12.vi.2010, light trap, D.M. Takiya leg., 1 male ( INPA).

Distribution: Brazil (Amazonas state).

Etymology: We are pleased to name this species in honor of its collector, Prof. Dra. Daniela Maeda Takiya, for her significant contributions in taxonomy of leafhoppers.

Figures

FIGURE 2. Oecetis danielae Henriques-Oliveira, Dumas & Nessimian, new species, male. 2 A, right fore- and hind wings, dorsal; 2 B, genitalia, left lateral; 2 C, genitalia, dorsal; 2 D, genitalia, ventral; 2 E, phallic apparatus, left lateral; 2 F, phallic apparatus, ventral.