Labiobaetis alahmadii Gattolliat & Al Dhafer, 2018

Kaltenbach, Thomas & Gattolliat, Jean-Luc, 2021, Labiobaetis Novikova & Kluge in Ethiopia (Ephemeroptera, Baetidae), with description of a new species, African Invertebrates 62 (1), pp. 231-255 : 231

1. Labiobaetis alahmadii Gattolliat & Al Dhafer, 2018

Labiobaetis alahmadii Gattolliat et al. 2018: figs 20-33.

Differential diagnosis.

Nymph. Following combination of characters: A) colouration: abdomen dorsally brown, with light pattern as Gattolliat et al. 2018: figs 32, 33; B) scape without distolateral process; C) labial palp segment II with thumb-like protuberance; segment III slightly pentagonal; D) maxillary palp segment II with excavation at inner distolateral margin; E) fore femur rather broad, length ca. 3 × maximum width; dorsal margin with ca. 18 curved, spine-like setae and many fine, simple setae, and basally some additional spine-like setae near margin; femoral patch reduced; F) fore tibia dorsally with a row of short, spatulate setae ( Gattolliat et al. 2018: fig. 26); G) hind protoptera well developed; H) seven pairs of gills; I) paraproct with ca. 16 stout, marginal spines.

Examined material.

Ethiopia • 6 nymphs; Lower Mille River ; 11°24'50"N, 40°45'38"E; 482 m; leg. W. Graf; 5 in alcohol; GenBank MW307224 ; GBIFCH00763724 , GBIFCH00515555 ; 1 on slide; GenBank MW307223 ; GBIFCH00763723 • 1 nymph; Korkada ; 08°30'03"N, 39°33'07"E; 09.12.2017; 1260 m; leg. W. Graf; Kk2; in alcohol; GenBank MW307225 ; GBIFCH00763718 • 1 nymph; Korkada; 08°30'03"N, 39°33'07"E; 1260 m; 09.11.2017; leg. W. Graf; Kk1; in alcohol; GenBank MW307226 ; GBIFCH00763719 • 1 nymph; Worer ; 09°20'07"N, 40°10'20"E; 740 m; 29.01.2018; leg W. Graf; Wr1; in alcohol; GenBank MW307222 ; GBIFCH00763720 • 1 nymph; Lafessa ; 08°23'16"N; 38°54'31"E; 1600 m; 05.11.2017; Lf1; leg. W. Graf; in alcohol; GenBank MW307227 ; GBIFCH00763732 ; all material in MZL .

Biological aspects.

The specimens were collected at altitudes between 480 m and 1600 m. Further characteristics of sampling sites are given in Englmaier et al. 2020: table 1. In Saudi Arabia, the species occurs in medium-size streams with stony substrates, preferably in relatively fast flowing water or even at the base of small waterfalls ( Gattolliat et al. 2018).

Distribution.

Ethiopia (Fig. 2a ), Saudi Arabia ( Gattolliat et al. 2018).

Figures

Figure 2. Distribution of Labiobaetis in Ethiopia.