On a new species of the genus Oukuriella Epler (Diptera, Chironomidae, Chironominae).
1998; Kansas (Central States) Entomological Society; Volume: 71; Issue: 3 Linguagem: Inglês
ISSN
1937-2353
AutoresMaria Conceição Messias, Sebastião José de Oliveira,
Tópico(s)Hymenoptera taxonomy and phylogeny
ResumoThe male of a new species of Oukuriella Epler, 1986, is described from Brazil. The new species is distinguished by basal transverse bands on abdominal tergites and a dis tinctive superior volsella. The female and immature stages are unknown. The genus Oukuriella was established by Epler (1986) with three species from Brazil, Colombia and Uruguay. Epler (1996) later described 3 more species from Costa Rica and the first female for the genus. Messias and Fittkau (1997) include 2 more species from Brazil, O. oliveirai and O. epleri. Messias, Fittkau, and Oliveira (in press) described O. intermedia from Brazil and the first immature stages for the genus. During ongoing revision of the genus in a Ph.D. thesis by the first author, two spe cies groups have been separated. Oukuriella sublettei n. sp., described below, is a member of the first group, characterized by the lack of a scutal tubercle, by tergites without setal tufts, and wings without dark brown markings. All measurements follow Epler (1988) unless otherwise stated. The abbreviations used to denote collections follow Messias and Fittkau (1997). Values are given in |im and, in parentheses, with the number of specimens utilized if different from the number cited at the beginning of the description. All specimens examined in this study are from the Zoologische Staatssammlung Munchen. Mor phological terminology and abbreviations follow Saether (1980). Oukuriella sublettei n. sp. (Figs. 1-3) Male imago (n = 10). color: Head, thorax and abdomen brownish. Wings mostly clear with a light brown tinge, veins light brown, legs brownish. T II-V with characteristic brown bands. Gonostylus white. head (Fig. 1): Temporals 12. Clypeus with approximately 15 setae. Palpomere lengths (n = 7): 20-25; 30-37; 88-94; 100-119; 150-176. AR (n = 6): 1.42 (1.32-1.49). thorax (Fig. 2): Acrostichals 6, dorsocentrals 5, scutellars 8, prealar 1. wing: Length 1.47 mm. Width 0.41 mm. VR: 0.74. R with 10 setae, Rt 15 setae. R4+5 10 setae. Segments lengths and proportions (n = 8): Accepted for publication 19 January 1998. This content downloaded from 157.55.39.175 on Thu, 11 Aug 2016 04:33:25 UTC All use subject to http://about.jstor.org/terms VOLUME 71, ISSUE 3 261 X ^^^^ivSS^^^ 100 ^im J J ioo ^m '^^^Wtmr\^^^^^ Figs. 1-3. Oukuriella sublettei n. sp. 1. Head, frontal view. 2. Thorax. 3. Hypopygium. fe ti ta, ta2 ta3 ta4 ta5 LR BV SV P] 960(9) 592 1031 728 480 408 144 1.74 1.46 1.50 p2 924(8) 712 484 240 144 120 48 0.70 3.84 3.83 p3 960(9) 744 600 360 288 192 96 0.80 2.46 2.84 abdomen: T VII with a group of 20 setae; S VIII with a proximal circular mound bearing a cluster of 12 setae. Paratergites I-VII each with 7 pairs of setae, VIII with a mound bearing setae. hypopygium (Fig. 3): T IX with 10 dorsomedian setae, posterior margin with a median weak notch and, transverse fields of setae. Superior volsella with 5-6 setae, inferior volsella with 10 dorsal setae and 1 ventral seta. Gonostylus white, broad and curved medially. etymology: We take great pleasure in naming this species in honor of Prof. J. E. Sublette and Mary Sublette, to express our deep appreciation of their contribution to the knowledge of Chironomidae. This content downloaded from 157.55.39.175 on Thu, 11 Aug 2016 04:33:25 UTC All use subject to http://about.jstor.org/terms 262 JOURNAL OF THE KANSAS ENTOMOLOGICAL SOCIETY type material: Holotype: imago, slide-mounted in Euparal, to be deposited at ZSM. Paratypes will be sent to ZSM and IOC. type locality: BRAZIL, Amazonas, at light, leg. E. J. Fittkau. Holotype: Rio Paru do Oeste, at light, 20/4/62. Paratypes: Missao Cururu, 12/1/61; 19/1/61. diagnosis: Oukuriella albistyla Epler, 1986, and Oukuriella sublettei n. sp. have white gonostylus, but the new species can be distinguished from all others so far de scribed by the banded abdomen, distinctive TIX and volsellae. Acknowledgments We would like to thank Prof. E. J. Fittkau and Dr. F. Reiss for valuable discus sions, and M. Spies for editing the draft manuscript. This publication is a part of the first author's ongoing Ph.D. thesis at the Instituto Oswaldo Cruz in Rio de Janeiro, Brazil, prepared as a Doctoral Program in Cooperation (Sandwich Program) of Deutscher Akademischer Austauschdienst (DAAD).
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