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Issue: Vol. 4657 No. 2: 19 Aug. 2019
Type: Article
Published: 2019-08-19
DOI: 10.11646/zootaxa.4657.2.9
Page range: 369–376
Abstract views: 66
PDF downloaded: 31

Four new species of Rhyacophila Pictet, 1834 (Trichoptera: Rhyacophilidae) from Southeast Asia

Department of Fishery and Coastal Resources, Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, Muang District, Surat Thani Province, Thailand 84100.
Sonnengasse 13, A-3293 Lunz am See, Austria
Department of Plant & Environmental Sciences, Clemson University, Clemson, South Carolina 29634-0310 USA
Department of Fishery and Coastal Resources, Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, Muang District, Surat Thani Province, Thailand 84100.
Trichoptera caddisfly Thailand Myanmar

Abstract

Four new species of genus Rhyacophila are described and illustrated from Thailand and Myanmar, Southeast Asia. Rhyacophila longicaudata sp. n. is in the R. nigrocephala Group; the very long basal segment of each inferior appendage distinguishes it from other related species. Rhyacophila aksornkoaei sp. n. and R. limsakuli sp. n. are in the R. anatina Group: they can be differentiated from other species of the group by the brush-like parameres and presence of a ventral process of the aedeagus in R. aksornkoaei sp. n., and by the rectangular apical segment of each inferior appendage and the hooked parameres in R. limsakuli sp. n.. Rhyacophila kengtungensis is in the R. yishepa Group and is characterized by the subtriangular shape of the preanal appendages in dorsal view and by the very large dorsal appendages of the phallic apparatus.

 

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