Corethrella ( Corethrella ) xokleng Amaral, Mariano & Pinho, 2019

Corethrella ( Corethrella) xokleng Amaral, Mariano & Pinho, 2019 Fig. 13 View Fig ; Appendix 1

Material examined

Holotype

BRAZIL – Santa Catarina State • 1 ♂, adult; Grão Pará, Rio Três Barras ; 28°12ʹ44ʺ S, 49°27ʹ28ʺ W; 15 Nov. 2012; L.C. Pinho, L.S. Gomes and A.L. Schlindwein leg.; light trap; MZUSP.

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Allotype

BRAZIL – Santa Catarina State • 1 ♀, adult; same collection data as for holotype, except Rio Braço Esquerdo ; 28°09ʹ01ʺ S, 49°21ʹ21ʺ W; 16 Nov. 2012; MZUSP.

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Paratype

BRAZIL – Santa Catarina State • 1 ♀, adult; same collection data as for allotype; CE-MHS.

Description

Male and female adults ( 1 ♂, 2 ♀♀)

HEAD ( Fig. 13A View Fig ). Sensilla: Ocular row with 2 thick slightly offset setae at ventral portion, more dorsally about 15 setae extending to mid-posterior portion of head. Subocular row not well-defined anteriorly, with about 10 slender posterior setae. Vertex with a few additional setae. Postgenal row with about 12 slender setae ranging from posterior end of ocular row to ventromedially. With 3 thick ventromedial setae.

THORAX ( Fig. 13B View Fig ). Sensilla: Antepronotum with 3–4 slender lateral setae. Postpronotum with 1–2 thick and 2–5 intermediate/slender dorsal setae. Scutum, prescutal area with about 8–13 thick and 8–12 slender setae dorsally located, difficult to distinguish from anterior portion of dorsocentral row. Antealar area with 1 anterodorsal seta, 3–5 thick ventral setae, and 24–34 intermediate/slender setae spread from ventral to dorsal portions, reaching dorsocentral row. Supraalar area with 3 thick central setae, with 8–12 slender setae surrounding. Dorsocentral row, posterior part with 3 thick and 1–2 intermediate offset setae; about 20–25 thick and 24–30 slender setae filling the row. Scutellum with 6–7 thick setae. Posterior anepisternum with 4–5 slender dorsal setae. Anepimeron with 1 intermediate and 0–1 slender setae.

WING. Male R 3 /R 1: 0.41; R 2+3 /R 2: 1.14. Female R 3 /R 1: 0.57–0.58; R 2+3 /R 2: 0.48–0.49.

LEGS. Empodium ( Amaral et al. 2019: 112, fig. 4e) elongate and thick, with 9–10 branches. Male Ta1/ Ta2: 2.92; Ta3/Ta4: 1.29. Female Ta1/Ta2: 3.21–3.25; Ta3/Ta4: 1.00–1.22.

Distribution and biology

The examined specimens belong to the type series described by Amaral et al. (2019): “This species is known from three individuals ( two females and one male) collected in light traps from type locality, Serra Furada State Park, in Grão Pará, SC, at elevations of 355– 354 m. Serra Furada is a region of Atlantic forest, interspersed with large areas of Eucalyptus cultivation, near the transition to Araucaria Forest at higher altitudes. The rivers where traps were set are gravel-bed streams, 4–6 m wide and about 1 m deep.”