Antillocladius ubatuba, Humberto F. Mendes, Trond Andersen & Ole A. Saether, 2004

Humberto F. Mendes, Trond Andersen & Ole A. Saether, 2004, A review of Antillocladius Saether, 1981; Compterosmittia Saether, 1981 and Litocladius new genus (Chironomidae, Orthocladiinae), Zootaxa 594, pp. 1-82 : 52-54

Antillocladius ubatuba new species

( Fig. 14 A–E)

Type material: Holotype male, BRAZIL: São Paulo, Ubatuba , Praia das Toninhas, 09.ix.2000, sweep net, H.F. Mendes ( MZUSP, slide mounted in Canada balsam). Paratypes: 14 males, as holotype ( ZMBN); São Paulo State, São Carlos, 1 male, 9.xii.1999, H.F. Mendes (UFSCar); Rio de Janeiro State, Mangaratiba, Muriquí, 4 males, 19.i.1991, A. Serpa­Fo et al. (FIOCruz). VENEZUELA: Falcón, Rio Mitare near San Luis, 11°07.930'N, 69°39.184'W, 1 male, 7.vi. 2001, 589 m a.s.l., R.W. Holzenthal, R. Blahnik, H. Paprocki, C. Cressa ( MIZA).

Diagnostic characters: The male imago can be separated from other members of the genus by having bare wing membrane; setose squama; costa moderately extended; acrostichals starting in front, all scalpellate; moderately long virga ; anal point long, nearly parallel­sided near apex, with blunt apex and weak lateral setae ; and inferior volsella long, posterior directed and digitiform.

Etymology: Named after the type locality, Ubatuba in São Paulo State, Brazil; the name is a noun in apposition.

Male (n = 8).

Total length 2.62–2.74, 2.67 mm. Wing length 1.51–1.67, 1.60 mm. Total length / wing length 1.60–1.75, 1.67. Wing length / length of profemur 2.43–2.52, 2.46. Coloration brown, thorax dark brown, tarsi of all legs light brown.

Head. AR 1.57–1.69, 1.63; ultimate flagellomere 536–595, 573 µm long. Temporal setae 10–11, 8; including 4 inner verticals; 2–3, 3 outer verticals and 3–4, 4 postorbitals. Clypeus with 6–10, 8 setae . Tentorium, stipes and cibarial pump as in Fig. 14 A, tentorium 136–139, 137 µm long, 13–15, 14 µm wide at sieve pore; stipes 112–116 (3) µm long. Palpomere lengths in µm: 25–30, 28; 45–56, 51; 121–139, 127; 116–131 (3); 134 (1). Third palpomere with 3–4, 3 sensilla clavata subapically, longest 18–20, 19 µm long.

Thorax ( Fig. 14 B). Antepronotum with 2–4, 3 setae . Dorsocentrals 8–11, 9; acrostichals 14–19, 17, all scalpellate starting close to antepronotum; prealars 2–4, 3; supraalar 0–1, 0. Scutellum with 7–9, 8 setae .

Wing ( Fig. 14 C). VR 1.30–1.37, 1.33. Costal extension 67–88, 77 µm long. Brachiolum with 1–2, 1 setae ; R1 with 0–1, 0 seta; other veins bare. Wing membrane bare. Squama with 6–10, 8 setae .

Legs. Spur of front tibia 61–66, 63 µm long; spurs of middle tibia 30–33, 31 µm and 38–53, 43 µm long; spurs of hind tibia 28–33, 31 µm and 56–61, 58 µm long. Width at apex of front tibia 35–40, 37 µm; of middle tibia 35–38, 37 µm; of hind tibia 45–51, 48 µm. Hind tibial comb with 9–13, 12 setae ; shortest seta 18–25, 21 µm long; longest seta 30–51, 38 µm long. Lengths (in µm) and proportions of legs as in Table 10 .

Hypopygium ( Fig. 14 D–E). Anal point 76–88, 85 µm long; 38–43, 40 µm wide at base; with 13–19, 16 strong lateral setae ; void of microtrichia except at base. Laterosternite IX with 7 setae . Phallapodeme 83–88, 87 µm long. Transverse sternapodeme slightly arcuate, with rounded oral projections; 109–114, 112 µm long. Virga 43–51, 45 µm long. Gonocoxite 181–192, 189 µm long, with well set–off inferior volsella with acute apex. Gonostylus 96–101, 99 µm long; megaseta 13–15, 14 µm long, situated slightly subapically. HR 1.87–1.95, 1.90; HV 2.65–2.76, 2.70.

Figures

FIGURE 14. Antillocladius ubatuba new species, male imago. A – cibarial pump, tentorium and stipes; B – thorax; C – wing; D – anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; E – hypopygium with anal point and tergite IX removed, left dorsal aspect, right ventral aspect.

Tables

TABLE 10. Lengths (in µm) and proportions of legs of Antillocladius ubatuba new species, (n = 2 – 8).

	fe	ti	ta1	ta2	ta3	ta4	ta5	LR	BV	SV	BR
p1	595– 663, 624	663– 761, 714	497– 585, 544	273– 322, 300	175– 195, 180	117– 136, 122	58– 78, 66	0.75– 0.77, 0.76	2.72– 3.01, 2.84	2.38– 2.79, 2.57	2.1– 2.2, 2.2
p2	595– 683, 634	634– 712, 666	283– 312, 292	146– 166, 153	88–107, 101	64– 68	44–48	0.43– 0.45, 0.44	4.16–4.37	4.41–4.47	3.2–3.5
p3	653– 741, 699	731– 809, 775	409– 585, 485	224– 253, 239	166– 185, 175	83–88	53–57	0.54– 0.72, 0.62	3.32–3.69	3.23– 3.58, 3.46	5.2–5.4