Notes On Rhopalopsole Klapálek (Plecoptera: Leuctridae), With Descriptions Of Three New Species From Vietnam Author Stark, Bill P. Box 4045, Department of Biology, Mississippi College, Clinton, Mississippi 39058, U. S. A. E-mail: stark @ mc. edu stark@mc.edu Author Sivec, Ignac Slovenian Museum of Natural History, Prešernova 20, P. O. Box 290, SLO- 1001 Ljubljana, Slovenia E-mail: isivec @ pms-lj. si isivec@pms-lj.si Author Shimizu, Takao Freshwater Benthos Associates, Hiraka 2666 - 24, Saku City, Nagano Prefecture, 385 - 0034, Japan E-mail: kawagera @ mac. com kawagera@mac.com text Illiesia 2012 8 13 134 140 journal article http://doi.org/10.5281/zenodo.4760641 ca0fbe5d-f1d6-4290-b22d-2eae88d76ec5 1854-0392 4760641 Key to Male Vietnamese Rhopalopsole 1 Abdominal sternum 9 without vesicle ( Fig. 2 in Harrison & Stark 2008 ) …………….….. R. alobata 1’ Vesicle present on abdominal sternum 9 ( Fig. 2 ) …………………………………………………….... 2 2 Spine-like process on segment 10 forked ( Figs. 6 , 8 in Harrison & Stark 2008 ) …………………….… 3 2’ Spine-like process on segment 10 unforked ( Fig. 1 ) ……………………………………………………… 4 3 Fused paraprocts deeply notched, posteromedian margin of tergum 9 with a slender, wide sclerotized area ( Fig. 6 in Harrison & Stark 2008 ) ……….………………………………..… R. sinensis 3’ Fused paraprocts without notch, posteromedian margin of tergum 9 with a minute, triangular sclerotized area (Fig. 20.1 in Sivec et al. 2008 ) …………………….…………………. R. vietnamica 4 Posteromedian margin of tergum 9 bearing a single dark sclerotized area ( Fig. 1 ) …………… 5 4’ Dark sclerotized area on posteromedian margin of tergum 9 divided or notched ( Fig. 8 ) …..…... 6 5 Posterolateral spine on tergum 10 acute, welldeveloped, cerci with small terminal spine ( Fig. 1 ) ………………………………………………. R. azun 5’ Posterolateral spine on tergum 10 poorly developed, scarcely projecting, cerci without spine (Fig. 40.1 in Sivec et al. 2008 ) …………………..……….……………….. R. sipang 6 Dark sclerotized areas on posterior margin of tergum 9 widely separated ( Fig. 5 ) …… R. minima 6’ Dark sclerotized areas on posterior margin of tergum 9 separated by a narrow gap or notch ( Fig. 8 , and Fig. 5.1 in Sivec et al. 2008 ) ……………... 7 7 Dark sclerotized area on posterior margin of tergum 9 upturned and projecting beyond margin ( Fig. 8 ); spine on tergum 10 apically truncate (Figs. 8,10) …………………………………. R. sapa 7’ Dark sclerotized area on posterior margin of tergum 9 flat and not projecting beyond margin ( Fig. 5.1 in Sivec et al. 2008 ); spine on tergum 10 acute ( Fig. 5.3 in Sivec et al. 2008 ) …….. R. tamdao