Three new species of Nilothauma Kieffer (Diptera: Chironomidae) from Brazil Dantas, Galileu P. S. Hamada, Neusa Zootaxa 2017 4282 2 350 360 9HZ64 Dantas & Hamada, 2017 Dantas & Hamada 2017 [151,433,1760,1786] Insecta Chironomidae Nilothauma Animalia Diptera 2 352 Arthropoda species anamariae sp. nov.     Typematerial. Holotype: male,  BRAZIL: Rio Grande do Sul, Bossoroca, Barra do Angico, Rio Piratinim, 28°32'05.53" S 54°57'30.05" W,  29–30.ii.2014, light-trap, A. M. Pes( INPA). Paratype: 1 male, as holotype (INPA).   FIGURES 5–8.  Nilothauma paucisetis  sp. nov.5 ( Diptera: Chironomidae). Hypopygium in dorsal view. 6—Hypopygium with tergite IX removed, left-ventral view, right—dorsal view. 7—Median volsella. 8—Variations of superior volsella.  Diagnostic characters.Anal point well-developed; TIX without dorsal projections, without dorsal setae in the median area; inferior volsella L-shaped, with a long simple lateral bristle, strongly curved and an apical lobe directed inwards bearing 10–12 apically split setae.   Etymology.The name is in honor of Dr. Ana Maria Oliveira Pes, who collected the typespecimens   Male(n= 1–2). Total length 2.28–2.50 mm. Wing length 1.14–1.15 mm. Total length / wing length 1.98–2.20. Wing length / length of profemur 2.10–2.15.  Coloration.Head and abdomen greenish-yellow, wings unmarked, antenna, vittae, postnotum and inferior half of preepisternum light-brown.  Head( Fig. 9). Antenna as in Figure 11. AR 0.21–0.24. Thirteenth flagellomere 117–125 µm long. Temporal setae 5 ina single row. Frontal tubercles not distinct. Clypeus with 18–19 setae. Cibarial pump with anterior margin slightly concave, 140–154 µm long. Tentorium 90–92 µm long, maximum width 16 µm. Stipes 116 µm long. Palp segment lengths (I–V, in µm): 17–19, 25–27, 56–65, 76–77, 100–131. Third palpomere with 2 sensilla clavata subapically, longest 16–18 µm long. Fifth palpomere / third palpomere 1.80–2.02. Eyes separated by 32–34 µm, dorsomedial extension 101–115 µm long, 74–87 µm wide.  Thorax( Fig. 10). Dorsocentrals 8–10 insingle row; acrostichals 16–18, biserial, starting close to anterior margin of scutum; prealars 3. Scutellum with 2 setae.  Wing( Fig. 12). WW 0.40–0.41. VR 1.41–1.54. Brachiolum with 2 setae, R with 10–11 setae, R1 with 8–11 setae, R4+5 with 9–15 setae, remaining veins bare. Anal lobe reduced.  Legs.Spur of fore tibia 20 µm long, scale 21 µm long. Mid tibia with 1 spur, 20 µm long; hind tibia with 1 spurs, 25 µm long. Combs of mid tibia 18–20 µm long, of hind tibia 17–18 µm long. Width at apex of fore tibia 41–42 µm, of mid tibia 44–46 µm, of hind tibia 47–51 µm. Mid and hind legs with pseudopurs in ta1–ta4; all legs with slender and curved claws. Lengths (in µm) and proportions of leg segments presented in Table 2.   TABLE 2.Length (in µm) and proportions of leg segments of  Nilothauma anamariae  sp. nov.( Diptera: Chironomidae), male (n= 2).    fe Ti ta1 ta2 ta3 ta4 ta5 LR BV SV  P1 534–541 421–422 490 259 189 139 93 1.16 2.12 1.95  P2 539–546 380–388 218–219 117–118 85–91 64–70 57–60 0.56–0.57 3.45–3.47 4.23–4.25  P3 607–628 581–586 330–331 185–186 172–174 109–113 81–84 0.56–0.57 2.75–2.80 3.60–3.67  Abdomen.Tergites with few setae. Segment VIII 132–141 µm long, 170–177 µm wide, weakly tapered anteriorly.  Hypopygium( Figs 13–14). Tergite IX with posterior margin wedge-shaped; without dorsal lobe(s), without dorsal setae in the median area, with 7–8 setae on each side close to base of anal point, distinct anal tergite bands present. Anal point well-developed, rounded at apex, 47–56 µm long, 15–16 µm wide medially. Laterosternite IX with 3 setae. Phallapodeme straight, 63–73 µm long; transverse sternapodeme straight, 38–39 µm long. Gonocoxite 90–93 µm long. Inferior volsella robust, curved at apex, 65–72 µm long, with a long simple and curved lateral bristle, strongly curved and an apical lobe directed inwards bearing 10–12 apically split setae. Superior volsella, 40–45 µm long, cylindrical and straight, with blunted apex, covered with microtrichia, without setae. Median volsella short, 9–11 µm long, straight, with 2 apical setae sitting on tubercles. Gonostylus tapered, 101 µm long, with 2 dorsal setae near the base. HR 0.89. HV 2.47.  Female imago and immatures.Unknown.   Distribution.Known only from the typelocality in Rio Grande do SulState, Brazil. 1976138588 2014-02-29 2014-02-30 2014-02-29 INPA A. M. Pes Brazil Bossoroca -28.534868 Rio Piratinim 1 -54.958347 Barra do Angico 2 352 2 Rio Grande do Sul holotype