Lyrocladius radulatus, 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: 62-64

publication ID

http://doi.org/ 10.11646/zootaxa.1887.1.1

persistent identifier

http://treatment.plazi.org/id/5C31878A-FFC7-FFF5-6AAD-FB4156C1A145

treatment provided by

Felipe

scientific name

Lyrocladius radulatus
status

sp. n.

Lyrocladius radulatus   sp. n.

( Figs 90–95 View FIGURES 90–95 )

Type material: Holotype male, BRAZIL: Paraná: Morretes, Parque Estadual do Pau Oco , 25°34'27.9''S 48°53'46.7''W, 07–10.iv.2002, Malaise trap (Trilha-5), M.T. Tavares et al. ( BIOTA-FAPESP) ( MZUSP) GoogleMaps   . Paratypes: 1 male, as holotype except for 10–13.iv.2002, Malaise trap (Bosque-4). 1 male, Rio de Janeiro: Nova Iguaçu, Reserva Biológica Tinguá , 22°34'28''S 43°26'09''W, 5–8.iii.2002, Malaise trap (Trilha-5), S.T.P. Amarante et al. ( BIOTA-FAPESP) GoogleMaps   ; 1 male, as previous except for 22°34'27''S 43°26'11.4''W, Malaise trap (Bosque-6) ( MZUSP, ZMBN) GoogleMaps   .

Diagnostic characters: See diagnostic characters for the genus.

Etymology: From Latin radula, scraper, adding the suffix -atus; referring to the resemblance of the gonostylus with the radula of some Gastropoda.

Male (n = 4, except when otherwise stated). Total length 1.38–1.52, 1.46 mm. Wing length 0.87–0.91, 0.89 mm. Total length / wing length 1.58–1.70, 1.64. Wing length / length of profemur 2.50–2.57, 2.54. Coloration brown; thorax light brown with dark markings on preepisternum, median anepisternum and notum; legs and tarsi uniformly light brown.

Head ( Fig. 90 View FIGURES 90–95 ). AR 0.74–0.85, 0.77. Ultimate flagellomere 223–252, 235 µm long. Temporal setae 7–10, 9; including 3–5, 4 inner verticals; 3–5, 3 outer verticals; and 1–2, 2 postorbitals. Clypeus with 4–9, 6 setae. Tentorium, stipes, and cibarial pump as in Figure 91 View FIGURES 90–95 . Tentorium 70–102, 83 µm long; 14–19, 15 µm wide. Sti- pes 70–86, 80 µm long. Palp segment lengths (in µm): 13–16, 14; 27–30, 28; 43–59, 53; 52–59, 55; 57–75, 69. Third palpomere with 2–3 sensilla clavata subapically, longest 9–14, 11 µm long.

Thorax ( Fig. 92 View FIGURES 90–95 ). Antepronotum with 0–1, 1 seta. Dorsocentrals 6–9, 7; acrostichals 7–19, 14 beginning close to antepronotum, composed of 4–10, 6 anterior simple and 3–13, 8 posterior scalpellate; prealars 3; supraalar 1. Scutellum with 4 setae.

Wing ( Fig. 93 View FIGURES 90–95 ). VR 1.40–1.47, 1.43. C extension 77–86, 81 µm long. Brachiolum with 1 seta; R with 0–1, 1 seta; other veins and cells bare. Squama with 1 seta.

Legs. Spur of foretibia 29–44, 35 µm long; spurs of midtibia 17–20, 19 µm and 13–16, 15 µm long; spurs of hind tibia 25–41, 33 µm and 12–18, 15 µm long. Width at apex of foretibia 20–23, 21 µm; of midtibia 21– 23, 22 µm; of hind tibia 27–29, 28 µm. Comb with 10–12, 11 setae; longest 27–34, 30 µm; shortest 15–18, 17 µm long. Lengths and proportions of legs as in Table 15.

Hypopygium ( Figs 94–95 View FIGURES 90–95 ). Tergite IX covered with microtrichia; laterosternite IX with 2–5, 4 setae. Anal point triangular, lyre-shaped; 29–34, 32 µm long; 25–27, 26 µm wide at base; 3–5, 4 µm wide at apex; with 14–21, 16 strong marginal setae. Phallapodeme 52–64, 58 µm long; transverse sternapodeme 48–61, 54 µm long. Virga 65–75, 70 µm long. Gonocoxite 118–132, 124 µm long. Gonostylus 68–75, 71 µm long; megaseta 9–12, 11 µm long. HR 1.62–1.90, 1.75; HV 1.90–2.23, 2.07.

Distribution: The species is known from Paraná and Rio de Janeiro States in Brazil. All specimens were collected with Malaise traps.

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

ZMBN

Museum of Zoology at the University of Bergen, Invertebrate Collection