Atanatolica curvata, Razuri-Gonzales, Ernesto, Holzenthal, Ralph W & Rios-Touma, Blanca, 2018

Razuri-Gonzales, Ernesto, Holzenthal, Ralph W & Rios-Touma, Blanca, 2018, New Atanatolica species from Ecuador (Trichoptera, Leptoceridae), ZooKeys 793, pp. 97-114 : 97

Atanatolica curvata sp. n. Figs 4, 8

Diagnosis.

This new species resembles A. homora Oláh, 2016 from Peru in that both possess paired, basodorsal membranous lobes on tergum X, but in A. homora these lobes bear peg-like setae and are narrower than in A. curvata sp. n. Also, the apicomesal processes of tergum X are long and capitate in A. homora ( Oláh 2016, fig 26), but short and digitate in A. curvata sp. n. (Figure 4B, D).

Description.

Adult male. Forewing length 10.5 mm (n = 1). General color light brown, forewing membrane light brown, covered in golden setae throughout wing membrane and brown setae on costal margin. Head with long, yellow setae dorsally, brown setae ventrally. Antennae broken at second flagellomere, scape and pedicel with long, light brown setae. Maxillary palps light brown, with long, brown hairs. Thorax light brown with long, yellow setae. Forelegs light brown, tibia with brown setae, tarsomeres with white ring basally; mid and hind legs with yellow setae, and two rows of dark spines on tibia and tarsomeres. Tibial spur formula 0, 2, 2.

Genitalia.

Segment IX annular, short, with anterior and posterior margins sinuous, with setae on ventral and lateral surfaces (ventral setae arising from a wart) (Fig. 4A). Preanal appendages shorter than tergum X, slender, digitate, setose (Figure 4A, 4B). Tergum X slightly notched apicomesally, basodorsal portion of tergum X membranous, produced into pair of membranous lobes; with two pairs of sclerotized apical processes; apicomesal processes digitate and directed dorsad in lateral view (Figure 4A); apicolateral processes shorter than apicomesal processes, apex subtriangular in dorsal view, directed laterad in dorsal and caudoventral views (Figure 4B, 4D). Inferior appendages with basal portion of first segment broad, setose, highly pigmented, mesal margin concave in ventral view (Figure 4C), apical portion digitate, curved mesad, inflated apically in ventral view, covered with stout, spine-like setae on its mesal surface; second article very small, short, triangular (Figures 4A, 4C). Phallic apparatus simple, without any processes; phallobase tubular; phallotremal sclerite simple, U-shaped in ventral view; endothecal membranes not everted (Figure 4D).

Holotype male.

ECUADOR: Napo: 12 km W Baeza, 2380 m, 09.ix.1990, OS Flint (NMNH) [USNMENT01295342].

Etymology.

The specific name curvata is a Latin adjective that means curved and refers to the strongly curved inferior appendages in ventral view.

Distribution.

Napo Province (Ecuador) (Figure 8).