A new species of Dasyhelea from Brazilian Amazonas and the description of the male of D. paulistana (Diptera: Ceratopogonidae)

Diaz Florentina, Torreias Sharlene R. S., Spinelli Gustavo R., Ronderos Maria M.
Acta Entomologica Musei Nationalis Pragae 54(2): 715-728, 2014
Published in print: 15th December 2014
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Abstract: A new species, Dasyhelea pseudopollinosa Díaz & Ronderos sp. nov., is described from Brazil, illustrated and photographed as pupae and male and female adults. The male of D. paulistana Forattini & Rabello, 1957 is described for the first time, and the pupa and female adult are redescribed. Pupae of both species were collected from mats of floating fern leaves (Salviniaceae and Azollaceae) in Brazil and Argentina, and exhibit a respiratory organ which is thick at the base and tapering to a sharp apex, and segment 9 with elongate, slender apicolateral process. Differences between the two species are established, and they are also compared with Nearctic congeners that have the same kind of pupa: D. pollinosa Wirth, 1952, D. traverae Thomsen, 1935, and D. chani Wirth & Linley, 1990.
Key words: Diptera, Ceratopogonidae, Dasyhelea pseudopollinosa sp. nov., D. paulistana, adult, pupa, Argentina, Brazil, Neotropical Region
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