Labiobaetis latus (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 : 368-369

6. Labiobaetis latus (Agnew, 1961)

Labiobaetis latus : Agnew 1961 ( Baetis latus ); Lugo-Ortiz and McCafferty 1997: figs 1-13 ( Labiobaetis aquacidus ; formal synonym, Lugo-Ortiz and de Moor 2000)

Differential diagnosis.

Nymph. Following combination of characters: A) scape with well-developed distolateral process (Fig. 2g ); C) labial palp segment II with broad thumb-like protuberance (Fig. 2f ); D) maxillary palp segment II with excavation at inner distolateral margin; E) fore femur rather broad, length ca. 3 × maximum width; dorsal margin with 13-18 curved, spine-like setae; femoral patch absent (Fig. 3c ); F) hind protoptera well developed; G) seven pairs of gills; H) paraproct with 21-29 stout, marginal spines.

Examined material.

Guinea • 2 nymphs; Férédougouba, stat. près confluent, Beya et M’bôo (Riv.6); 09.09.1988; leg. J.-M. Elouard; 1 in alcohol; GBIFCH00515501 ; 1 on slide; GBIFCH00592375 ; MZL • 5 nymphs; Bas. Loffa, Riv. Loffa, Loc. Loffa (Mission Agnès); 30.01.1988; ORSTOM; leg. J.-M. Elouard; in alcohol; GBIFCH00592420 ; MZL • 13 nymphs; Bas. Niger, Riv. Niandan, Loc. Sassambaya ; 23.12.1984; Coll. ORSTOM; leg. J.-M. Elouard; 10 in alcohol; GBIFCH00515535 , GBIFCH00515569 , GBIFCH00515536 ; 2 on slides; GBIFCH00592421 , GBIFCH00592398 ; MZL • 1 nymph; Riv. Niandan, Loc. Sassambaya ; 19.04.1986; leg. J.-M. Elouard; on slide; GBIFCH00592414 ; MZL; 2 nymphs; Bas. Niger, Riv. Niandan, Loc. Kissidougou-Kankan (route); 26.10.1984; Coll. ORSTOM; leg. J.-M. Elouard; in alcohol; GBIFCH00592418 ; MZL • 1 nymph; Haute Diani, pres Diomandau ; 08°55'00"N, 08°07'60"W; 08.03.1988; leg. J.-M. Elouard; in alcohol; GBIFCH00515537 ; MZL • 1 nymph; Bas. St. Paul (= Diani), Riv. St. Paul, Loc. N'Zebela ; 31.01.1988; Coll. ORSTOM; leg. J.-M. Elouard; in alcohol; GBIFCH00592419 ; MZL • 1 nymph; Kon Launtau ; 28.I.1989; leg. J.-M. Elouard; in alcohol; GBIFCH00515538 ; MZL . Ivory Coast • 3 nymphs; Lagboayo ; 18.07.2007; leg. E.O. Edia; 2 in alcohol; GBIFCH00515539 ; 1 on slide; GBIFCH00592399 ; MZL • 2 nymphs; Lagboayo ; 27.10.2006; leg. E.O. Edia; in alcohol; GBIFCH00515546 ; MZL • 23 nymphs; Loc. Pont Ehania, Riv. Ehania ; 05°16'42"N, 02°50'01"W; 14.06.2008; leg. Gattolliat and E.O. Edia; in alcohol; GBIFCH00515601 ; MZL • 2 nymphs; Grobiakoko ; 05°51'18"N, 05°31'00"W; 29.10.2006; leg. E.O. Edia; 1 in alcohol; GBIFCH00515617 ; 1 on slide; GBIFCH00592450 ; MZL • 3 nymphs; Grobiakoko ; 05°51'18"N, 05°31'00"W; 19.07.2007; leg. E.O. Edia; 2 in alcohol; GBIFCH00515542 ; 1 on slide; GBIFCH00592739 ; MZL • 11 nymphs; Riv. Soumié, Loc. Anoblekro ; 05°29'44"N, 03°22'15"W; 06.03.2005; leg. E.O. Edia; 10 in alcohol; GBIFCH00515614 ; 1 on slide; GBIFCH00592735 ; MZL . Mali • 1 nymph; Bas. Sénégal, Riv. Baoule, Loc. Kati-Kita (route); 22.11.1984; Coll. ORSTOM, leg. J.-M. Elouard; on slide; GBIFCH00592374 ; MZL .

Distribution.

Guinea, Ivory Coast, Mali (Fig. 4c ), Ethiopia ( Kaltenbach and Gattolliat 2021), South Africa, Kenya ( Lugo-Ortiz and McCafferty 1997).

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.