Labiobaetis elouardi (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 : 364-365

3. Labiobaetis elouardi (Gillies, 1993) : Gillies 1993

Differential diagnosis.

Nymph. Following combination of characters: A) scape with well-developed distolateral process (Fig. 8e ); B) labrum rectangular, dorsally with a submarginal arc of peculiar setae (Fig. 8a, h-j ); C) mandibles with incisor and kinetodontium apically cleft (Fig. 8b, c ); D) glossae much shorter than paraglossae (Fig. 8d ); labial palp segment II with broad thumb-like protuberance; E) hind protoptera absent; F) six pairs of gills; G) paraproct with 2-3 stout, marginal spines (Fig. 8f, g ).

Examined material.

Ivory Coast • 28 nymphs; Abidjan, Banco, Reserve Naturelle ; 05°23'17"N, 04°03'13"W; 17.07.2007; leg. E.O. Edia; 24 in alcohol; GBIFCH00515540 , GBIFCH00515547 ; 4 on slides; GBIFCH00592400 , GBIFCH00592402 , GBIFCH00592405 , GBIFCH00592406 • 7 nymphs; Abidjan, Banco , Reserve Naturelle ; 05°23'17"N, 04°03'13"W; 18.06.2008; leg. J.-L. Gattolliat and E.O. Edia; 6 in alcohol; GBIFCH00515607 , GBIFCH00515608 ; 1 on slide; GBIFCH00592459 . Guinea • 3 nymphs; Bas. Cavally, Riv. Cavally, Loc. Mt. Nimba (nord-ouest); 01.02.1988; Coll. ORSTOM; leg. J.-M. Elouard; on slides; GBIFCH00592433 , GBIFCH00592434 , GBIFCH00592435 ; all material in MZL .

Distribution.

Guinea, Ivory Coast (Fig. 4b ).

Figures

Figure 4. Distribution of Labiobaetis in West Africa.

Figure 8. a-i Labiobaetis elouardi, nymph morphology a labrum b incisor and kinetodontium of right mandible c incisor and kinetodontium of left mandible d glossa and paraglossa e base of antenna f, g paraproct. SEM photos, Labrum, dorsal surface, right side, submarginal arc of setae (h section of figure i) j seta of submarginal arc on dorsal surface of labrum k usual type of feathered seta of submarginal arc on dorsal surface of labrum. Scale bar: 0.1 mm (h, i).