The Baetidae (Ephemeroptera) of the Comoros and Mayotte 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 Mary, Nathalie ETHYC'O, B. P. 13 821, 98 803 Noumea cedex, Noumea, New Caledonia 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 2021-09-08 62 2 427 463 http://dx.doi.org/10.3897/afrinvertebr.62.70632 journal article http://dx.doi.org/10.3897/afrinvertebr.62.70632 2305-2562-2-427 E47E255B34B74C47BBF480C0B0F15807 80878CB7D7E957BA8670DA6EA2D7647C 5. Labiobaetis vinosus (Barnard, 1932) Labiobaetis vinosus : Barnard 1932 ( Baetis vinosus ); Gillies 1994: figs 16-26 ( Baetis spatulatus ; formal synonym, Kluge and Novikova 2016 ); Lugo-Ortiz and McCafferty 1997: figs 75-86; Kluge and Novikova 2016 : figs 113, 122-129, 132, 133 ( L. tenuicrinitus ; informal synonym, Kluge 2021 ). Diagnosis. Nymph. Following combination of characters: A) labrum on dorsal surface with submarginal arc of feathered setae; B) labial palp segment II with broad, thumb-like protuberance; C) maxillary palp segment II with excavation at inner distolateral margin; D) 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; E) hind protoptera absent or minute; F) six pairs of gills. Distribution (Fig. 9 ). Angola, Comoros, DR Congo, Ethiopia, Ivory Coast, South Africa, Tanzania, Uganda ( Kaltenbach and Gattolliat 2021 and citations therein). Biological aspects. The specimens were collected at an altitude of 210 m, together with L. glaucus and N. richardi sp. nov. The characteristics and environmental conditions of the sampling site (Anjouan, Riv. Tatinga) are described in Starmuehlner (1979 : p. 654): river width 4-8 m, depth 5-10 cm, water temperature ca. 25 °C, bottom substrata consisted of basaltic boulder, gravel and muddy sand. Material examined. Comoros • 3 nymphs ; Anjouan , Riv. Tatinga , lower course by the bridge; 210 m ; 22.03.1974 ; leg. F. Starmuehlner ; 2 on slides; GBIFCH00592719 , GBIFCH00592745 ; 1 in alcohol; GBIFCH00515665 ; MZL .