Nilotanypus urubici, Andersen & Pinho, 2019

Andersen, Trond & Pinho, Luiz C., 2019, Two new species of Nilotanypus Kieffer, 1923 (Diptera, Chironomidae, Tanypodinae) from Brazil, Norwegian Journal of Entomology 66, pp. 11-18 : 13-17

publication ID	https://doi.org/10.5281/zenodo.15883285
persistent identifier	https://treatment.plazi.org/id/03A1BE33-1B08-D879-8C78-FAAFFBFDFC53
treatment provided by	Felipe
scientific name	Nilotanypus urubici
status	sp. nov.

Treatment

Nilotanypus urubici View in CoL n. sp. ( Figures 2 View FIGURE 1-2. 1 , 5–11 View FIGURES 3–6. 3 View FIGURES 7–11 )

Type material: Holotype male: Santa Catarina State, Urubici, São Joaquim National Park, Morro da Igreja , Rio Pelotas tributary, 1670 m a.s.l., 28 o 07’37”S 49 o 28’47”W, Malaise trap, leg. L.C. Pinho & L.E.M. Bizzo. GoogleMaps Paratypes: 4 males as holotype. ( MZUSP, ZMBN) .

Etymology: Named after the municipality where the species was collected. The name is to be regarded as a noun in apposition.

Diagnostic characters: The combination of pseudospurs on mid ta 1 –ta 3, an antennal ratio

of 0.38–0.42, and the pale brown to colorless abdomen, will separate the species from all other species in the genus.

Description: Male (n = 4–5, if not otherwise stated). Total length 1.97–2.20, 2.12 mm. Wing length 1.17–1.28, 1.22 mm. Total length / wing length 1.68–1.76, 1.72. Wing length / length of profemur 3.05–3.39, 3.25.

Coloration. Head, antenna and thorax brown; palpomeres pale brown to nearly colorless; legs pale brown; abdomen inclusive hypopygium pale brown to nearly colorless, wing membrane colorless.

Antenna ( Figure 7 View FIGURES 7–11 ). Antennal ratio (AR) = 0.38–0.42, 0.40. Ultimate flagellomeres 164–180, 171 µm long, apical seta 56–68 (2) µm long.

Head ( Figure 8 View FIGURES 7–11 ). Temporal setae 13–14, 13, including 3 strong frontals, 3–4, 3 inner verticals, 4–5, 4 outer verticals and 2–3, 2 postorbitals. Clypeus with 15–19, 16 setae. Tentorium 102–112, 109 µm long, 18–23, 20 µm wide. Palp segment lengths (in µm): 27–29, 28; 28–30, 29; 55–65, 61; 97–101 (3); 155–181 (3). Third palpomere with 1–2 sensilla along inner margin, longest 21 µm long.

Thorax. Antepronotals 3–4, 4; dorsocentrals 28–33, 31, starting close to antepronotum, irregularly biserial in front; acrostichals 28–39, 32, starting close to antepronotum, biserial; prealars 13–16, 15 in two groups, anterior group with 7–10, 8 setae, posterior group with 6–7, 7 setae; supraalar 1; prescutellum with 1 strong seta; anterior border of mesonotum with curved row of 9–11, 10 tubercles. Scutellum with posterior row not otherwise stated). LR = Leg ratio, BV = “Bein-Verhältnis”, SV = “Schenkel-Schiene-Verhältnis”,

BR = Bristle ratio.

Norwegian Journal of Entomology 66, 11–18 (2019)

of 7–9, 8 strong setae, uniserial and 10–14, 13 weak, scattered, anterior setae.

Wing ( Figure 1 View FIGURE 1-2. 1 ). Venarum ratio (VR) = 0.66– 0.68, 0.67. Wing membrane and veins densely covered with setae. Brachiolum with 2 setae. Squama with 15–19, 18 setae.

Legs ( Figures 9–11 View FIGURES 7–11 ). Width at apex of fore tibia 28–33 (2) µm, of mid tibia 28–34, 30 µm, of hind tibia 30–36, 32 µm. Spur of fore tibia 36–40 (2) µm long, of mid tibia 47–50, 48 µm long, of hind tibia 50–54, 52 µm long. Fore and hind tarsi apparently without pseudospurs; pseudospur of mid ta 1 41–44 (2) µm long, of mid ta 2 47–48 (2) µm long, of mid ta 3 39 (1) µm long. Comb of hind tibia with 5–6, 6 setae, longest seta 35–39 (3) µm long, shortest 28–32 (3) µm long. Length (in µm) and proportion of legs as in Table 2.

Hypopygium ( Figures 5–6 View FIGURES 3–6. 3 ). Tergite IX with concave posterior margin, with 4–9, 7 setae; 2–4 on each side. Anal point broadly rounded. Gonocoxite 72–99, 85 µm long, 41–49, 45 µm wide. Gonostylus 44–65, 55 µm long, megaseta 7–10, 8 µm long. Hypopygium ratio (HR) = 1.41– 1.71, 1.56. Hypopygium value (HV) = 3.39–3.77 (3).

Female and immatures. Unknown. Distribution. Only known from the type locality in Santa Catarina State, Brazil .