Pseudosmittia sp. 3 Pinho et al. (2009: 164) Neotropical Allocladius Kieffer, 1913 and Pseudosmittia Edwards, 1932 (Diptera: Chironomidae) 2472 Andersen, Trond Saether, Ole A. Mendes, Humberto F. Zootaxa 2010 2010-05-14 2472 1 1 77 8DJDS Andersen & Saether & Mendes, 2010 Andersen & Saether & Mendes 2010 [151,389,1276,1302] Insecta Chironomidae Pseudosmittia Animalia Diptera 54 55 Arthropoda species nana sp. nov.  ( Figs 148–153)     Pseudosmittiasp. 3  Pinho et al.(2009: 164).   Type material.  Holotypemale,  BRAZIL: Bahia State, Estação Ecológica Pau Brasil, Porto Seguro, 16º23'17.6''S, 39º10'55.6''W,  17.v. 2002, 107 m a.s.l., Malaise trap(Trilha 1), C.O. Azevedo et al.(BRPS20: BIOTA-FAPESP), ( MZUSP).  Paratypes: 2 males,  São Paulo State, Parque Estadual Intervales, Ribeirão Grande, Barra Grande, 24º15'S, 48º10'W,  10–13.xii.2000, Malaise trap(Trilha 2), M.T. Tavares et al.(PEIN07: BIOTA-FAPESP) ( ZMBN);  1 male, as previous except  13–16.xii.2000, Malaise trap(Trilha 5), (PEIN09: BIOTA-FAPESP) ( MZUSP).  Diagnostic characters.The species differs from other members of the genus by having scalpellate acrostichals and from other Neotropical species except  P. windwardensisby the long costal extension.   Etymology.From Latin, nanus, dwarf, referring to the small size.  Male(n = 3–4, except when otherwise stated). Total length 0.98–1.30 mm. Wing length 0.55–0.79, 0.70 mm. Total length / wing length 1.71–1.83. Wing length / length of profemur 2.57–3.16.  Coloration.Thorax brown; abdomen with segments 3–5 pale, remaining segments brown; femora and basal half of tibiae brown, apical half of tibiae and tarsi pale brown.  Head.Antenna with twelve flagellomeres, AR 0.33 (1), ultimate flagellomere 90 (1) µm long or with thirteen flagellomeres, AR 0.32–0.36, ultimate flagellomere 126–139 µm long. Temporal setae 3–5, 4; consisting of 2–4, 3 inner verticals; 0–2, 1 outer verticals and 0–2, 1 postorbitals. Clypeus with 6–9, 7 setae. Tentorium, stipes and cibarial pump as in Figure 148. Tentorium 49–81, 68 µm long; 9–11, 10 µm wide. Stipes 49 (1) µm long. Palpomere ( Fig. 149) lengths (in µm): 8–15, 11; 15–18, 16; 24–32, 28; 30–45, 41; 47–61, 55. Third palpomere with 3–4 lanceolate sensilla clavata, 7–11 µm long.   FIGURES 148–153.  Pseudosmittia nana  sp. n.,male. 148—tentorium, stipes, and cibarial pump; 149—palp; 150—thorax; 151—wing; 152—hypopygium, dorsal aspect; 153—hypopygium with anal point and tergite IX removed, dorsal aspect to the left, ventral aspect to the right.  Thorax( Fig. 150). Median antepronotal lobes strongly reduced; antepronotum with 0–1, 1 lateral seta. Dorsocentrals 4–5, 4; acrostichals 2, scalpellate; prealars 1–2, 1; supraalar absent. Scutellum with 2 setae.  Wing( Fig. 151).Wing cuneiform. Cu 1curved. R 4+5ending proximal to apex of M 3+4. VR 1.23–1.82. Costal extension 30–93, 74 µm long. Brachiolum with 1 seta, other veins bare.  Legs. Spur of fore tibia 19–36, 27 µm long, spurs of mid tibia 9–11 µm and 8–9 µm long, of hind tibia 26– 34, 31 µm and 9–15, 11 µm long. Width at apex of fore tibia 17–19, 18 µm, of mid tibia 15–18 µm, of hind tibia 15–25, 21 µm. Comb with 7–12, 10 setae; longest 19–27, 24 µm long, shortest 13–16, 15 µm long. Length and proportions of legs as in Table 19.   TABLE 19.Length (in µm) and proportions of legs of  Pseudosmittia nana sp. n., male (n = 1–3).    fe ti ta1 ta2 ta3 ta4  p1 175–281 222–292 104–151 83–94 36–54 19–25  p2 198–385 222–317 99–140 68–94 38–47 19–22  p3 222–310 213–306 123–166 74–79 61–76 19–26  ta5 LR BV SV BR  p1 19–14 0.47–0.52 4.10–4.61 3.79–3.86 2.0–4.7  p2 18–20 0.44–0.45 4.58–5.26 4.24–4.87 2.8–4.2  p3 20–22 0.53–0.58 3.76–3.84 3.54–3.77 2.5–3.8  Hypopygium( Figs 152–153). Anal point 1–14 µm long. Tergite IX with 2 or 4 setae. Laterosternite IX with 2 setae. Phallapodeme 31–54, 46 µm long. Sternapodeme with oral projections indicated; transverse sternapodeme 31–36, 35 µm long. Virga triangular, 9 µm long. Gonocoxite 81–102, 93 µm long. Inferior volsella with 6–8 µm wide, 8–11 µm long, digitiform anterior lobe, projecting caudad; posterior lobe low, rounded. Gonostylus 38–44, 42 µm long, with low, rounded apical crista dorsalis; megaseta 3–6, 5 µm long. HR 2.13– 2.37, 2.22. HV 2.93–3.01.   Remarks.The presence of scalpellate acrostichals makes the placement in  Pseudosmittiasomewhat doubtful. However, in all other details the species resemble several other members of the genus.   Distribution and biology.The species was collected in Malaise traps in fragmented primary Mata Atlântica forests in São Pauloand BahiaStates. In Bahiait was taken at about 100 ma.s.l., while in São Pauloabove 800 ma.s.l. 2002-05-17 MZUSP C. O. Azevedo Brazil -16.388222 Porto Seguro 1 -39.182114 Estacao Ecologica Pau Brasil 54 55 1 Bahia holotype 2000-12-10 2000-12-13 2000-12-10 ZMBN M. T. Tavares Brazil Parque Estadual Intervales -24.25 Barra Grande 1252 -48.166668 Ribeirao Grande 54 55 2 2 Sao Paulo paratype 2000-12-13 2000-12-16 2000-12-13 MZUSP Brazil 54 55 1 1 Sao Paulo paratype