Polypedilum (Pentapedilum) camposense, Oyewo & Saether, 2008

Oyewo, Emmanuel Adeoye & Saether, Ole A., 2008, Revision of Polypedilum (Pentapedilum) Kieffer and Ainuyusurika Sasa et Shirasaki (Diptera: Chironomidae), Zootaxa 1953, pp. 1-145 : 45

Polypedilum (Pentapedilum) camposense sp. n.

( Figs 12A–C)

Type material. Holotype male, BRAZIL: São Paulo State, Campos de Jordão , 10.ix.2001, M. T. Suriano ( MZUSP).

Diagnostic characters. The species can be separated from other species with more than 100 setae in each of cells m 1+2 and r 4+5, foretibial scale without spur and base of superior volsella with microtrichia, by having only about 4 setae in cell m basal of RM and the apical seta of the inferior volsella prominent, reaching apex of gonostylus.

Etymology. From Latin, campus, field, plain, and – ense, a suffix denoting locality, referring to Campos de Jordão, the plain of Jordão.

Male (n = 1)

Total length not measurable. Wing length 1.92 mm. Wing length / length of profemur 2.44. Thorax, abdominal segments, femur, tibia and tarsi brown.

Head. AR 1.35. Ultimate flagellomere 605 µm long. Clypeus with 15 setae. Palpomere lengths (in µm): 44, 54, 136, 129; fifth palpomere torn. Third palpomere with 2 sensilla clavata.

Thorax. Acrostichals 9, dorsocentrals 12, prealars 6. Scutellum with 5 setae.

Wing. Anal lobe moderately developed. VR 1.18. Brachiolum 1 seta, R with 32, R 1 with 23, R 4+5 with 50, Sc with 10, RM with 1, M with 13, M 1+2 with 82, M 3+4 with 25, Cu with 2, Cu 1 with 8, PCu with 2, An with 1 setae. Cells r 4+5, and m 1+2 each with just over 100; m 3+4 with 63 macrotrichia, cell m basal of RM with 4, cu plus an with 36 macrotrichia. Squama with 7 setae.

Legs. Scale on foretibia 37 µm long, nearly triangular, without apical spur. Spurs on midtibia 60 µm long, on hind tibia 69 µm long. Comb on midtibia 25 µm long, combs on hind tibia 28 µm and 23 µm long. Width at apex of foretibia 46 µm, of midtibia 53 µm, of hind tibia 55 µm. Length and proportions of legs as in Table 9.

Hypopygium ( Figs 12A–C). Tergite IX with 11 median setae, laterosternite IX with 2 setae. Anal point 58 µm long, 8 µm wide at base, gradually tapering to nearly parallel-sided towards 5 µm wide apex. Transverse sternapodeme 23 µm long; phallapodeme 67 µm long. Gonocoxite 145 µm long. Superior volsella ( Fig.12B, C) 74 µm long; base with 2–3 inner setae and microtrichia, 1 lateral seta on projection. Inferior volsella 115 µm long, nearly parallel-sided, with 1 prominent apical seta. Gonostylus 124 µm long. HR 1.17.

Distribution. Known only from the holotype from Brazil.