Labeo sp.

Liyandja, Tobit L. D. & Stiassny, Melanie L. J., 2023, Description of two new Labeo (Labeoninae; Cyprinidae) endemic to the Lulua River in the Democratic Republic of Congo (Kasai ecoregion); a hotspot of fish diversity in the Congo basin, American Museum Novitates 2023 (3999) : -

Labeo sp. ‘mbimbii’: Liyandja et al., 2022

HOLOTYPE: AMNH 277862 ( AMCC 249232 , CT), 91.5 mm SL, main channel of the Lulua River over rocks at Dipumu Rapids , about 47 km downstream of Katende Dam, Kasai Central Province, D.R. Congo, 05°56′12.4″S, 022°20′22.1″E, J.J. Mbimbi and T. Liyandja, September 2014.

PARATYPES: AMNH 253456 (2, CT), 94.2–104.2 mm SL, main channel of the Lulua River over rocks and rapids at Dijiba, about 19 km downstream of Katende dam, Kasai Central Province , D.R.C., 06°10′21.8″S, 022°27′07.7″E, J.J. Mbimbi, July 2010 ; AMNH 269102 (2), 62.3–70.4 mm SL, main channel of the Lulua River over rocks at about 155 km in straight line upstream of Katende Dam, Kasai Central Province , D.R.C., 07°44′21.7″S, 022°36′39.6″E, J.J. Mbimbi and T. Liyandja, September 2014 ; AMNH 277863 (4, 2 CT), 81.5–93.8 mm SL, same locality as holotype, J.J. Mbimbi and T. Liyandja, September 2014 ; AMNH 277864 (6, 1 CT), 62.0– 71.6 mm SL, main channel of the Lulua River over rocks at Nsanga Nyembo Rapids, about 45.5 km in a straight line downstream of Katende Dam , Kasai Central Province , D.R.C., 05°56′53.4″S, 022°20′29.4″E, J.J. Mbimbi, July 2008 ; AMNH 277865 (2), 81.3–84.5 mm SL, main channel of the Lulua River over rocks downstream Nsanga Nyembo, about 47 km in a straight line downstream of Katende Dam , Kasai Central Province , D.R.C., 05°55′55.8″S, 022°20′27.6″E, J.J. Mbimbi, July 2008 ; AMNH 277866 (3), 78.09–83.37 mm SL, same locality as AMNH 277864, J.J. Mbimbi, July 2008 ; ANSP 208760 (1), 90.05 mm SL, main channel of Lulua River in rocky habitat at about 2 km upstream of Dipumu Rapids, Kasai Central Province , D.R.C., 05°57′17.8″S, 022°20′43.3″E, J.J. Mbimbi and T. Liyandja, September 2014 ; ANSP 208761 (1), 80.6 mm SL, main channel of the Lulua River over rocks at Katende Rapids, Kasai Central Province , D.R.C., 06°20′37.2″S, 022°27′1.3″E, J.J. Mbimbi, January 2009 ; MRAC 2023.001.P.0001–0002 (2), 85.69– 92.68 mm SL, same locality as holotype, J.J. Mbimbi and T. Liyandja, September 2014 ; ZSM 48369 (2), 94.67–103.6 mm SL, same locality as holotype, J.J. Mbimbi and T. Liyandja, September 2014 .

ADDITIONAL NONTYPE MATERIAL: AMNH 269104 (11), 53.48–82.13 mm SL, same locality as holotype, J.J. Mbimbi and T. Liyandja, September 2014 .

DIFFERENTIAL DIAGNOSIS: While no unambiguous morphological autapomorphies have been located to diagnose Labeo mbimbii , the species is distinguished from all central African