Nectopsyche aymore, new species

urn:lsid:zoobank.org:act: DDF40146-406E-4FD5-9A1F-2D2D309CA4F0 (Fig. 1 A-F, 2A-C & 3A-C)

Diagnosis. This new species has male genitalia similar to the species of the candida-group (Flint, 1968) based on the following characteristics: simple, elongated preanal appendages (Fig. 1B, C); slender, straight inferior appendages (Fig. 1A, B); basoventral process of the inferior appendages digitate (Fig. 1A, B). On the other hand, this species has several endothecal spines in the phallic apparatus (Fig. 1 D-F), as in species included in the gemma-group. The color pattern of the scales and hairs on the head, thorax, and forewings (Fig.2A) is similar to those of N. splendida, as both species have bands of metallic silver-iridescent scales interleaved with black hairs or scales on the forewings. In the new species, however, the black coloration is formed only by dark hairs between the bands of scales, and the scales in the bands as well as the bands themselves are not as densely distributed or defined as they are in N. splendida (compare Figs. 2A and D). Furthermore, the forewing of N. splendida has a patch of golden scales over the stigma (Fig. 2D), which is absent in the new species. In addition, the new species differs from N.splendida by having wider abdominal segment IX in lateral view (Fig. 1B); narrower and smaller ovoid tergum IX acrotergites (Fig.1B, C); smaller, more robust preanal appendage (Fig. 1B, C); segment X lateral process thin with acute apex (Fig.1B); inferior appendage with apicomesal lobe with small spines at the apex (Fig. 1A); periphalic process without an enlarged apex (Fig. 1 D-F); phallobase strongly curved and flexible (Fig. 1 D-F); and endothecal membranes with small spines (Fig. 1 D-F).

Description. Adult male.Length of forewing 6.3 – 6.7 mm, (6.5 mm, n = 10). Head dark brown (Fig. 2B, C), with metallic silver-iridescent scales on dorsum; antennae brown to dark, scape dark brown (Fig.2B, C); labial and maxillary palps dark brown; eyes small, width approximately 0.4 times interocular distance (Fig. 2B). Thorax black to dark brown (Fig. 2B, C) covered with metallic silver-iridescent scales, mesothorax with 4, 5 or 6 pairs of setal warts, metathorax with 1 pair of setal warts (Fig. 2B); legs brown to light brown; forewings dark brown with 3 vertical irregular bands of metallic silver-iridescent scales interleaved with dark hairs, and 1 horizontal band of metallic silver-iridescent scales in the anal region extending to apical region (Fig. 2A). Male genitalia. Abdominal segment IX, in lateral view, trapezoidal (Fig. 1B); tergum sub-rectangular with a pair of mid-dorsal protuberance, with pair of small oval acrotergites (Fig. 1C); sternum IX absent. Preanal appendage approximately same length as segment IX, narrow, setose, rounded apically (Fig. 1B, C). Segment X lateral process approximately 0.5x the length of preanal appendage, thin, very narrow, apex acute with 2 apical setae (Fig. 1B). Inferior appendage slender straight with apex acute in lateral view (Fig. 1B), with long setae; apicomesal lobe rounded apically, with few setae and many small spines at apex (Fig. 1A); basoventral process long, approximately 0.3x length of inferior appendage, narrow, with several long setae (Fig. 1A, B). Phallic apparatus with periphallic processes thin, long, slightly curved s-shaped, apex acute, smooth (Fig. 1 D-F); phallic apodeme enlarged, bulbous, semi-membranous (Fig.1 D-F); phallobase sclerotized and flexible, in relaxed state (clarified with KOH 10% method) the basal median ventral area is strongly curved into a closed c-shape (Fig. 1D), in semi-everted state (minutes after clarification with lactic acid 85% method) phallobase protruding from inside the phallic apparatus (Fig. 1E), in full-everted (immediately after classification by the lactic acid 85% method) its median basal area is flexed and slightly curved (Fig. 1F); endothecal membranes highly eversible with many small spines (Fig. 1 D-F); phallotremal sclerite small, U-shaped in dorsal view.

Adult Female. Length of forewing 4.4 – 4.8 mm, (4.5 mm, n = 10). Color as in male. Female genitalia. Abdominal segment IX trapezoidal (Fig. 3A, C); tergum with pair of small oval acrotergites (Fig. 3A, C); sternum IX absent.Appendages of segment X short, subtriangular, setose (Fig. 3 A-C); digitate process setose, short, with at right angles present midlaterally, below appendages of X (Fig. 3B, C); valves short, narrow, setose (Fig. 3C). Vaginal apparatus (spermathecal sclerite complex) with narrow and slightly arcuate posterior vertical sclerite connected to sclerite on the side extremities (Fig. 3B); mid-ventral longitudinal sclerite with narrow elliptical shape connected to U-shaped dorsal sclerite (Fig. 3B); vaginal apparatus connected to terminal membranes by narrow, partially sclerotized neck (Fig. 3B, C).

Holotype. Male. BRAZIL: Espírito Santo: São Mateus, Santa Maria, Sítio Santa Maria, Rio São Mateus, S 18°39’17.1” W 39°59’36”, 17 m, 07- 08.ix.2012, CEUNES col. (UFVB) (UFVBTR00072) [illustrated] . Paratypes: Same data as holotype, 1 male, 3 females (UFVB) (UFVBTR00073); same, except 13-14.vi.2012, 11 males, 9 females (UFVB) (UFVBTR00074); same, except 13-14.vi.2012, 11 males, 8 females (MNRJ) .

Additional material examined. BRAZIL: Espírito Santo: Nova Venécia, Santa Rita do Pip Nuck, Rio Cricaré, S 18°39’51.4” W 40°30’44.9”, 74 m, 18-19.iv.2012, CEUNES col., 1 female (UFVB) (UFVBTR00075) ; Colatina, Rio Doce, S 19°32’14.0” W 40°38’23.5”, 75 m, 05-06.i.2022, Viana, Bonfá, Rodrigues & Rothe-Neves col., 2 males, 4 females (UFVB) (UFVBTR00076) ; Linhares, Lagoa Nova, S 19°19’49.0” W 40°10’12.3”, 16 m, 12-13.ix.2022, Viana, Bonfá & Ataide col., 43 females (UFVB) (UFVBTR00077) ; Linhares, Rio Doce, S 19°26’06.4” W 39°57’04.8”, 20 m, 13-14.ix.2022, Viana, Bonfá & Ataide col., 6 males, 9 females (UFVB) (UFVBTR00078) .

Etymology. The specific epithet is a name of Tupi origin given to the indigenous people who inhabited the south of Bahia state, north of Espírito Santo state and also in Minas Gerais state. They are also known as Botocudos and Krenak.