Labiobaetis glaucus (Agnew, 1961)

Kaltenbach, Thomas & Gattolliat, Jean-Luc, 2021, Labiobaetis Novikova & Kluge in West Africa (Ephemeroptera, Baetidae), with description of a new species, African Invertebrates 62 (1), pp. 355-382 : 367-368

5. Labiobaetis glaucus (Agnew, 1961)

Labiobaetis glaucus : Agnew 1961 ( Baetis glaucus ); Lugo-Ortiz and McCafferty 1997: figs 27-38, 39-50 ( Labiobaetis masai , L. nadineae ; formal synonyms, Lugo-Ortiz et al. 2000); Lugo-Ortiz et al. 2000: figs 1-11 ( Pseudocloeon glaucum ); Gattolliat et al. 2018: figs 34-44, 47

Differential diagnosis.

Nymph. Following combination of characters: A) scape without distolateral process (Fig. 2e ); B) labial palp segment II with broad thumb-like protuberance (Fig. 2f ); C) maxillary palp segment II with excavation at inner distolateral margin, segment II ca. 1.5 × length of segment I (Fig. 2b, c ); D) fore femur mostly rather broad, length 2.7-3.2 × maximum width; dorsal margin with 13-18 curved, spine-like setae and often basally some additional setae near margin; femoral patch well developed (Fig. 3b ); E) hind protoptera well developed; F) seven pairs of gills; G) paraproct with 5-13 stout, marginal spines.

Examined material.

Guinea • 1 nymph; Guinea; Bas. Niger, Riv. Niandan , Loc. Sassambaya; 23.12.1984; Coll. ORSTOM; leg. J-M Elouard; on slide; GBIFCH00592422 ; MZL. Ivory Coast • 17 nymphs; Loc. Aboisso , Riv. Bia; 05°28'04"N, 03°12'26"W; 14.06.2008; leg. J.-L. Gattolliat and E.O. Edia; 1 on slide; GBIFCH00592407 ; 16 in alcohol; GBIFCH00515549 ; MZL • 1 nymph; Pont Soumie ; 05°24'53"N, 03°16'56"W; 04.04.2005; leg. E.O. Edia; on slide; GBIFCH00592451 ; MZL. Mali • 47 nymphs; Bas. Niger, Riv. Niger, Loc. Tienfala (= Tyenfala); 21.03.1985; Coll. ORSTOM; leg. J.-M. Elouard; 44 in alcohol; GBIFCH00515532 ; 3 on slides; GBIFCH00592396 , GBIFCH00592426 , GBIFCH00592427 ; MZL • 9 nymphs; Bas. Sénégal, Riv. Baoule, Loc. Kati-Kita (route); 22.11.1984; Coll. ORSTOM, leg. J.-M. Elouard; 8 in alcohol; GBIFCH00515533 ; 1 on slide; GBIFCH00592397 ; MZL • 26 nymphs; Bas. Sénégal, Riv. Baoule, Loc. Missira ; 09.10.1984; Coll. ORSTOM, leg. J.-M. Elouard; in alcohol; GBIFCH00515534 ; MZL • 10 nymphs; Riv. Niger, Sotuba ; 16.01.1985; leg. J.-M. Elouard; 9 in alcohol; GBIFCH00515570 ; 1 on slide; GBIFCH00592416 ; MZL .

Distribution.

Guinea, Ivory Coast, Mali (Fig. 4a ), Ethiopia ( Kaltenbach and Gattolliat 2021), potentially Iran ( Tahmasebi et al. 2020), Angola ( Barber-James and Ferreira 2019), Saudi Arabia, Mayotte ( Gattolliat et al. 2018), South Africa, Lesotho, Namibia, Kenya ( Lugo-Ortiz et al. 2000), Zimbabwe ( Harrison and Hynes 1988).

Figures

Figure 2. Nymph morphology a Labiobaetis boussoulius, maxillary palps b-e Labiobaetis glaucus b, c maxillary palps d labial palp e base of antenna f, g Labiobaetis latus f labial palp g base of antenna h Labiobaetis vinosus, labial palp. Scale bar: 0.1 mm.

Figure 3. Nymph morphology, fore femur a Labiobaetis boussoulius b Labiobaetis glaucus c Labiobaetis latus. Scale bar: 0.1 mm.

Figure 4. Distribution of Labiobaetis in West Africa.