Labiobaetis gambiae (Gillies, 1993)

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 : 365-367

4. Labiobaetis gambiae (Gillies, 1993)

Labiobaetis gambiae : Gillies 1993: figs 30-37 ( Baetis gambiae ); Edia et al. 2015

Differential diagnoses.

Nymph. Following combination of characters: A) scape without distolateral process; B) labial palp segment II with narrow, thumb-like protuberance, segment III enlarged, slightly pentagonal (Fig. 9b ); C) maxillary palp segment II with slight excavation at inner, distolateral margin; D) fore femur rather slender, length ca. 4 × maximum width; dorsal margin with ca. eight curved, spine-like setae; femoral patch absent; E) hind protoptera small (Fig. 9a ); F) seven pairs of gills.

Material examined.

Gambia • 4 nymphs; River Gambia, Wali Kunda ; 01.10.1981; on slides; NHM10017019 , NHM10017020 , NHM10017022 , NHM10017023 ; NHM • 2 nymphs; River Gambia, Wali Kunda ; 07.10.1981; on slides; NHM10017021 , NHM10017026 ; NHM • 1 nymph; River Gambia, Wali Kunda ; 10.1986; on slide; NHM10017024 ; NHM. Ivory Coast • 1 nymph; Riv. Eholié, Akakro ; 05°28'36"N, 03°08'25"W; 01.10.2003; leg. E.O. Edia; on slide; GBIFCH00592452 ; MZL • 26 nymphs; Riv. Noé, Loc. M'possa ; 05°28'37"N, 02°51'30"W; 30.06.2004; leg. E.O. Edia; 1 on slide; GBIFCH00592731 ; 25 in alcohol; GBIFCH00515610 ; MZL • 62 nymphs; Riv. Soumié, Loc. Pont Soumie ; 05 °24'53"N, 03°16'56"W; 14.06.2008; leg. J.-L. Gattolliat and E.O. Edia; 1 on slide; GBIFCH00592732 ; 61 in alcohol; GBIFCH00515611 ; MZL • 13 nymphs; Grobiakoko ; 05°51'18"N, 05°31'00"W; 29.10.2006; leg. E.O. Edia; 1 on slide; GBIFCH00592736 ; 12 in alcohol; GBIFCH00515616 ; MZL • 15 nymphs; Niambré; 05°52'46"N, 05°36'55"W; 19.07.2007; leg. E.O. Edia; in alcohol; GBIFCH00515544 ; MZL • 16 nymphs; Boubo ; 05°18'08"N, 04°22'37"W; 19.07.2007; leg. E.O. Edia; 1 on slide; GBIFCH00592737 ; 15 in alcohol; GBIFCH00515543 ; MZL • 1 nymph; Goré; 06°22'28"N, 06°34'27"W; 26.10.2006; leg. E.O. Edia; in alcohol; GBIFCH00515618 ; MZL. MALI • 1 nymph; River Niger, 30 km downstream Bamako, Tyenfala (= Tienfala ); 05.02.1986; on slide; NHM10017025 ; NHM.

Distribution.

Gambia, Ivory Coast, Mali (Fig. 4b ).

Figures

Figure 4. Distribution of Labiobaetis in West Africa.

Figure 9. Nymph morphology a, b Labiobaetis gambiae a metanotum (left side), with small hind protopteron (mature nymph) b labial palp c, d Labiobaetis piscis c metanotum (left side), with well-developed hind protopteron (mature nymph) d labial palp. Scale bar: 0.1 mm.