Luciobarbus, Heckel, 1843

Brahimi, Amina, Libois, Roland, Henrard, Arnaud & Freyhof, Jörg, 2018, Luciobarbus lanigarensis and L. numidiensis, two new species of barbels from the Mediterranean Sea basin in North Africa (Teostei: Cyprinidae), Zootaxa 4433 (3), pp. 542-560 : 546

Key to species of Luciobarbus in the African Mediterranean Sea basin

The key is developed based on materials examined listed at the end of the text.

1a Barbels thick, rostral-barbel origin close to tip of snout............................................. L. guercifensis

1b Barbels thin, rostral-barbel origin clearly behind tip of snout.................................................... 2

2a Last unbranched dorsal-fin ray serrated along 2/3 of its length.................................................. 3

2b Last unbranched dorsal-fin ray serrated along almost its entire length............................................. 8

3a Caudal peduncle 1.2–1.3 times longer than deep............................................................. 4

3b Caudal peduncle 1.3–1.5 times longer than deep............................................................. 6

4a Predorsal length 46–52% SL; interorbital distance 40–44% HL; 43–47+1–3 lateral line scales...... Luciobarbus setivimensis

4b Predorsal length 52–59% SL; interorbital distance 36–46% HL; 41–45+1–3 lateral line scales......................... 5

5a Pectoral-fin length 17–21% SL, 60–79% HL; usually 41+1–2 lateral line scales................ Luciobarbus mascarensis

5b Pectoral-fin length 21–24% SL, 79–90% HL; 43–45+1–3 lateral line scales................... Luciobarbus lanigarensis

6a Caudal peduncle depth 13–14% SL; 43–47+1–2 lateral line scales............................ Luciobarbus numidiensis

6b Caudal peduncle depth 10–13% SL; 41–45+1–2 lateral line scales............................................... 7

7a Predorsal length 46–52% SL; Interorbital distance 36–39% HL; 41–43+1–2 lateral line scales; 4 unbranched dorsal-fin rays................................................................................... Luciobarbus leptopogon

7b Predorsal length 52–56% SL; Interorbital distance 33–40% HL; 42–45+1–2 lateral line scales; usually 5, very rarely 4 unbranched dorsal-fin rays............................................................ Luciobarbus yahyaouii

8a Anal-fin length 19–23% SL.......................................................... Luciobarbus numidiensis

8b Anal-fin length 16–19% SL............................................................................. 9

9a Anal-fin base length 8–10% SL; 41–43+1–2 lateral line scales................................ Luciobarbus chelifensis

9b Anal-fin base length 6–8% SL; 43–47+1–3 lateral line scales................ Luciobarbus callensis / Luciobarbus rifensis