During entomological surveys in the municipalities of São Geraldo do Araguaia and Juruti, Pará (PA), Brazil, female specimens of Culicoides belonging to two undescribed species of the subgenus Haematomyidium Goeldi were collected.The purpose of this paper is to describe and illustrate these new species from Northern Brazil and make a discussion with related species of the subgenus Haematomyidium. Revisions in this subgenus for the Neotropics were made for the debilipalpis species group (Vitale et al. 1981) and for the paraensis species group (Wirth & Felippe-Bauer 1989, Felippe-Bauer et al. 2003. According to Borkent and Spinelli (2007), 36 neotropical species are recognized in this subgenus.Recently, Felippe-Bauer and Spinelli (2009) considered Culicoides bachmanni Spinelli as a junior synonym of Culicoides horticola Lutz. With this taxonomy update and the addition of the two new species described here, there are now from this subgenus 37 species from the Neotropical Region, being 18 known from Brazil and 11 from the Amazonian Region.
MATERIALS AND METHODSThe specimens described herein as a new species were collected by CDC light trap in São Geraldo do Araguaia and Juruti, PA. The specimens were mounted in phenol-balsam in the manner described by Wirth and Marston (1968). The types were deposited in the Invertebrate Collection of the Emílio Goeldi Paraense Museum (MPEG), PA, and in the Ceratopogonidae Collection of the Oswaldo Cruz Institute (CCeIOC), Rio de Janeiro. Diagnostic characters were illustrated using a camera lucida attached to an Olympus BH-2 miscroscope. Microphotographies of the wings were taken with a Nikon Eclipse E-800.In this paper, we follow the terminology established in Culicoides papers by Spinelli et al. (2005). Terms for wing veins follow the system of the Manual of Nearctic Diptera (McAlpine et al. 1981), with modifications proposed by Szadziewski (1996). The measurements of the spermathecae are in micrometers and those of the wings are in millimeters. Meristic information is given as range, following by the mean and number of specimens examined.Culicoides (Haematomyidium) jurutiensis, sp. nov.(
Figs 1-7)Diagnosis -Only species in the subgenus Haematomyidium with two pale spots in cell r3 and m 1, hairy eyes and moderately separated, head and proboscis nearly similar in length, moderately long palpus, subequal spermathecae, mandible with 17-18 teeth.Female -Wing length 0.84 mm (n = 2), width 0.38 mm (n = 2).Head: dark brown. Eyes (Fig. 2) separated by distance equal to diameter of 1.5 ommatidia, with numerous interommatidial spicules. Flagellum (Fig. 3) brown, with proximal 2/3 of flagellomeres 1-6 paler, flagellomeres elongate, vasiform; AR 0.85; sensilla coeloconica on flagellomeres 1, 6-8, one on 1, two on 6, three on 7-8. Palpus (Fig. 5) dark brown; third segment swollen distally, with subapical shallow, rounded pit; PR 2.7 (n = 2); PH ratio 0.91-1.00 (0.95, n = 2). Mandible with 17-18 teeth.Thorax: dark brown. Mesonotum without distinct pattern in slide mounted specimens. Legs (Fig...
