Labiobaetis Novikova & Kluge in Ethiopia (Ephemeroptera, Baetidae), with description of a new species Author Kaltenbach, Thomas https://orcid.org/0000-0001-8052-0388 Museum of Zoology, Palais de Rumine, Place Riponne 6, CH- 1005 Lausanne, Switzerland & University of Lausanne (UNIL), Department of Ecology and Evolution, CH- 1015 Lausanne, Switzerland thomas.kaltenbach@bluewin.ch Author Gattolliat, Jean-Luc https://orcid.org/0000-0001-5873-5083 Museum of Zoology, Palais de Rumine, Place Riponne 6, CH- 1005 Lausanne, Switzerland & University of Lausanne (UNIL), Department of Ecology and Evolution, CH- 1015 Lausanne, Switzerland text African Invertebrates 2021 2021-02-24 62 1 231 255 http://dx.doi.org/10.3897/afrinvertebr.62.62029 journal article http://dx.doi.org/10.3897/afrinvertebr.62.62029 2305-2562-1-231 E78BE37B3A274A16B4F8FE24E3BA2167 D6B5B7B648B6527898474ABDACD47ECC 6. Labiobaetis vinosus (Barnard, 1932) Labiobaetis vinosus Barnard 1932 Pseudocloeon tenuicrinitum Kopelke 1980 ( Pseudocloeon tenuicrinitum ; informal synonym, Kluge 2020 ) Baetis spatulatus Gillies 1994 : figs 16-26 ( Baetis spatulatus ; formal synonym, Kluge and Novikova 2016 ) Labiobaetis vinosus Lugo-Ortiz and McCafferty 1997 : figs 75-86 Labiobaetis tenuicrinitus Kluge and Novikova 2016 : figs 113, 122-129, 132, 133 ( L. tenuicrinitus ; informal synonym, Kluge 2020 ) Remark. Judging from the figures and description in Kluge and Novikova (2016) , there is no morphological difference between L. vinosus and L. tenuicrinitus . Kluge (2020) also indicates the synonymy of both species. However, no formal synonymy has been established so far. As we have not seen material of L. tenuicrinitus , we are not in a position to formally synonymise both species. Further, the genetic barcode (COI) of both species remains unknown. Differential diagnosis. Nymph . Following combination of characters: A) colouration: abdomen dorsally brown, with pattern as Kluge and Novikova 2016 : fig. 113; B) scape without distolateral process; C) labial palp segment II with broad, thumb-like protuberance; segment III conical; D) maxillary palp segment II with excavation at inner distolateral margin; E) fore femur rather broad, length ca. 3 x maximum width; dorsal margin with 8-18 curved, spine-like setae and basally a partial second row of setae; F) hind protoptera absent or minute; G) six pairs of gills. Examined material. Ethiopia • 6 nymphs ; Lafessa ; 08°23'16"N , 38°54'31"E ; 1600 m ; 08.11.2017 ; leg. W. Graf ; Lf1; 1 on slide; GBIFCH00592392 ; 5 in alcohol; GBIFCH00515562 , GBIFCH00763730 , GBIFCH00829883 , GBIFCH00829884 , GBIFCH00829885 • 4 nymphs ; Korkada ; 08°30'03"N , 39°33'07"E ; 1260 m ; 10.11.2017 ; leg. W. Graf ; Kk1; 3 in alcohol; GBIFCH00515561 ; 1 on slide; GBIFCH00592388 ; all material in MZL . Biological aspects. The specimens were collected at altitudes of 1260 m and 1600 m. Further characteristics of sampling sites are given in Englmaier et al (2020) . Harrison and Hynes (1988) reported the species at 2500 m in marginal vegetation. Distribution. Ethiopia (Fig. 2b ), DR Congo ( Kopelke 1980 ), Tanzania ( Gillies 1994 ), Uganda ( Kluge and Novikova 2016 ), South Africa ( Lugo-Ortiz and McCafferty 1997 ).