Antillocladius campususp, Mendes & Andersen, 2008

Mendes, Humberto Fonseca & Andersen, Trond, 2008, A review of Antillocladius Saether and Litocladius Mendes, Andersen et Saether, with the description of two new Neotropical genera (Diptera, Chironomidae, Orthocladiinae), Zootaxa 1887 (1), pp. 1-75 : 29

Antillocladius campususp sp. n.

( Figs 23–27 )

Type material: Holotype male, BRAZIL: São Paulo: Ribeirão Preto, University of São Paulo Campus , 26– 29.i.2003, Malaise trap, H.F. Mendes & T. Andersen ( MZUSP) . Paratypes: 5 males, same data as holotype ; 1 male, São Simão, ponte Tio Zito, 19.i.2003, sweep net, H.F. Mendes & T. Andersen ( ZSM, ZMBN) .

Diagnostic characters: The new species can be separated from all other members of the genus by the absence of virga, and the well set off, parallel-sided inferior volsella, with broadly rounded apex.

Etymology: The name refers to the type locality, the University of São Paulo (USP) campus; the name is to be regarded as a noun in apposition.

Male (n = 7, except when otherwise stated). Total length 1.59–1.77, 1.70 mm. Wing length 1.00–1.14, 1.08 mm. Total length / wing length 1.55–1.73, 1.60. Wing length / length of profemur 2.52–2.81, 2.63. Coloration brown, thorax light brown with darker markings on preepisternum, median anepisternum and notum; legs and tarsi uniformly light brown.

Head. AR 1.00–1.12, 1.06. Ultimate flagellomere 333–382, 352 µm long. Temporal setae 7–10, 9; including 3–5, 4 inner verticals; 2–3, 3 outer verticals; and 2–3, 2 postorbitals. Clypeus with 3–6, 4 setae. Tentorium, stipes, and cibarial pump as in Figure 23 . Tentorium 91–100, 97 µm long; 13–18, 16 µm wide. Stipes 91–102, 97 µm long; 39 (1) µm wide. Palp segment lengths (in µm): 14–16, 15; 25–41, 33; 61–91, 76; 66–77, 71 (4); 77–88 (2). Third palpomere with 2–5, 3 sensilla clavata subapically, longest 9–12, 10 µm long.

Thorax ( Fig. 24 ). Antepronotum with 1–3, 2 setae. Dorsocentrals 4–8, 6; acrostichals composed of 0–2, 1 simple anterior and 7–12, 10 scalpellate posterior setae; prealars 3; supraalar 1. Scutellum with 4–6, 4 setae.

Wing ( Fig. 25 ). VR 1.28–1.35, 1.32. C extension 54–70, 60 µm long. Brachiolum with 1 setae; all veins and cells bare. Squama with 1–3, 2 setae.

Legs. Spur of foretibia 36–43, 39 µm long; spurs of midtibia 20–23, 21 µm and 18–19, 18 µm long; spurs of hind tibia 34–41, 37 µm and 16–20, 18 µm long. Width at apex of foretibia 24–27, 26 µm; of midtibia 25– 27, 26 µm; of hind tibia 29–34, 31 µm. Comb with 12–14, 13 setae; longest 29–34, 31 µm; shortest 16–18, 17 µm. Lengths and proportions of legs as in Table 4.

Hypopygium ( Figs 26–27 ). Tergite IX covered with microtrichia; laterosternite IX with 4–6, 5 setae. Anal point narrowly triangular; 34–48, 40 µm long; 14–23, 17 µm wide at base; 2–5, 3 µm wide at apex; with 8–13, 10 setae. Phallapodeme 57–68, 63 µm long; transverse sternapodeme 29–36, 32 µm long. Virga absent. Gonocoxite 102–120, 110 µm long. Gonostylus 57–66, 63 µm long; megaseta 5–9, 7 µm long. HR 1.62–1.92, 1.74; HV 2.60–2.82, 2.69.

Biology and distribution: The species was taken together with A. folius and A. musci in the Ribeirão Preto area, São Paulo State, Brazil, with most of the specimens collected on the USP Campus, and one specimen at São Simão. The sampling site on the USP Campus is a small patch of large, old rainforest.

Figures

FIGURES 23–27. Antillocladius campususp sp. n., male. 23—tentorium, stipes, and cibarial pump; 24—thorax; 25— wing; 26—anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; 27—hypopygium with anal point and tergite IX removed, dorsal aspect to the left and ventral aspect to the right.