Pseudosmittia paulista, Andersen & Saether & Mendes, 2010

Andersen, Trond, Saether, Ole A. & Mendes, Humberto F., 2010, Neotropical Allocladius Kieffer, 1913 and Pseudosmittia Edwards, 1932 (Diptera: Chironomidae) 2472, Zootaxa 2472 (1), pp. 1-77 : 59-61

Pseudosmittia paulista sp. n.

( Figs 160–166 )

Type material. Holotype male, BRAZIL: São Paulo State, Estação Ecológica Juréia-Itatins, Peruíbe , 24º31'06''S, 47º12'06''W, 3.v.2002, Malaise trap (Trilha 1), N.W. Perioto et al. (PEJU17: BIOTA-FAPESP) ( MZUSP) . Paratype: 1 male, same as holotype ( ZMBN) .

Diagnostic characters. The species differs from other Neotropical members of the genus by having palpomeres not reduced, third palpomere with 13–14 sensilla clavata, R 4+5 ending distal to apex of M 3+4, anal point narrowly triangular with conspicuous microtrichia and penis cavity sclerotized.

Etymology. From Portuguese, paulista , meaning native from São Paulo State, referring to the State where the specimens were collected. The name is to be treated as a noun in apposition.

Male (n = 1–2). Total length 1.57–1.59 mm. Wing length 0.86–0.88 mm. Total length / wing length 1.82. Wing length / length of profemur 2.88–2.94.

Coloration. Thorax and abdomen brown, legs pale brown.

Head. AR 1.22–1.23, ultimate flagellomere 320–346 µm long. Temporal setae 6, including 4 inner verticals and 2 outer verticals. Clypeus with 8–9 setae. Tentorium, stipes and cibarial pump as in Figure 160 . Tentorium 73–86 µm long, 14–16 µm wide; stipes 49–91 µm long. Palpomere ( Fig. 161 ) lengths (in µm): 13–16, 27–30, 50–54, 61, 75. Third palpomere with 13–14 lanceolate sensilla clavata, longest 8 µm long.

Thorax ( Fig. 162 ). Median antepronotal lobes reduced; antepronotum with 2–3 lateral setae. Dorsocentrals 9–12, acrostichals 2, prealars 3, supraalar absent. Scutellum with 4 setae.

Wing ( Fig. 163 ). Wing cuneiform. Cu 1 slightly curved. R 4+5 ending distal to apex of M 3+4. VR 1.26–1.42. Costa not extended. Brachiolum with 1 seta, other veins bare.

Legs. Spur of fore tibia 32–43 µm long, spurs of mid tibia 27 µm and 18 µm long, of hind tibia 25–41 µm and 12–20 µm long. Width at apex of fore tibia 20 µm, of mid tibia 18 µm, of hind tibia 24 µm. Comb with 10–11 setae, longest 25–32 µm long, shortest 18–20 µm long. Length and proportions of legs as in Table 21.

Hypopygium ( Figs 164–166 ). Anal point narowly triangular, 13–15 µm long, 6–8 µm wide at base, with 2–3 setae at base. Tergite IX with 8–12 additional setae. Laterosternite IX with 4–5 setae. Phallapodeme 48 µm long. Sternapodeme without oral projections, transverse sternapodeme about 45 µm long. Virga 14–20 µm long; penis cavity sclerotized. Gonocoxite 111–118 µm long. Inferior volsella with short rounded apex projecting caudad, reaching to about 0.66 of gonocoxite length, with fringe of stout curved microtrichia. Gonostylus 47–54 µm long, crista dorsalis indicated; megaseta 6–8 µm long. HR 2.04–2.48. HV 2.89–3.34.

Distribution and biology. Two specimens were collected in a Malaise trap in a primary lowland Mata Atlântica forest in São Paulo State, Brazil.

Figures

FIGURES 160–166. Pseudosmittia paulista sp. n., male. 160—tentorium, stipes, and cibarial pump; 161—palp; 162— thorax; 163—wing; 164—hypopygium, dorsal aspect; 165—hypopygium with anal point and tergite IX removed, dorsal aspect to the left, ventral aspect to the right; 166—gonostylus.