Revision of the Oxynoemacheilus angorae group with the description of two new species (Teleostei: Nemacheilidae) Author Yoğurtçuoğlu, Baran Hacettepe University, Faculty of Science, Biology Department, Beytepe Campus, 06800 Ankara, Turkey. Author Kaya, Cüneyt Recep Tayyip Erdogan University, Faculty of Fisheries, 53100 Rize, Turkey. Author Freyhof, Jörg 0000-0002-7042-3127 Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, 10115 Berlin, Germany. joerg. freyhof @ mfn. berlin; https: // orcid. org / 0000 - 0002 - 7042 - 3127 joerg.freyhof@mfn.berlin text Zootaxa 2022 2022-05-06 5133 4 451 485 journal article 55627 10.11646/zootaxa.5133.4.1 c2f66f44-2174-4c3a-82b5-288255ca2cb1 1175-5326 6530889 58A39822-32D1-4907-A866-7E75E5DA70A2 Key to species of Oxynoemacheilus angorae group 1a Caudal-peduncle depth 2.2–2.6 times in its length................................................... O. isauricus 1b Caudal-peduncle depth 1.2–2.1 times in its length............................................................ 2 2a Caudal fin deeply emarginate, middle caudal-fin ray 65–76% of length of longest upper caudal-fin ray; body usually with elongate blotches; blotches on flank usually connected to saddles, meeting contralateral on flank.......... O. mediterraneus 2b Caudal fin slightly emarginate or almost truncate, middle caudal-fin ray 71–98 % of length of longest upper caudal-fin ray; body mottled, marbled, with vermiculated pattern or with roundish blotches; blotches on flank usually not connected to saddles, not meeting contralateral on flank......................................................................... 3 3a Belly with few, small, embedded scales; caudal fin emarginate, middle caudal-fin ray 71–91% of length of longest upper caudal-fin ray (76–91% in O. nasreddini , 71–84% in other species).............................................. 4 3b Belly without scales; caudal fin slightly emarginate or almost truncate, middle caudal-fin ray 83–98% of length of longest upper caudal-fin ray......................................................................................... 7 4a Body depth almost uniform between dorsal- and caudal-fin bases (depth of caudal peduncle 87–99% of body depth at anteriormost dorsal fin base).......................................................................... O. theophilii 4b Body depth decreasing between dorsal- and caudal-fin bases (depth of caudal peduncle 69–87% of body depth at anteriormostdorsal fin base).................................................................................... 5 5a Usually a series of vertically elongated blotches along lateral midline, not meeting contralateral on flank; tip of pectoral fin usually reaching to or slightly beyond pelvic-fin origin in male........................................ O. nasreddini 5b Flank with roundish blotches in variable size, forming a variable pattern between coarse marbled and fine mottled; tip of pectoral fin usually not reaching to or reaching pelvic-fin origin in male.......................................... 6 6a Caudal-peduncle depth 1.3–1.5 times in its length; scales on belly present from midline between pectoral- and pelvic-fin bases to pelvic-fin base............................................................................... O. eliasi 6b Caudal-peduncle depth 1.5–1.8 times in its length; scales on belly restricted between pelvic-fin bases, rarely exceeding anteriorly................................................................................. O. germencicus 7a Flank with a series of dark-brown midlateral blotches usually fused into a wide, irregular shaped midlateral stripe, rarely a mottled pattern; usually with a depigmented stripe along anterior part of lateral line......................... O. angorae 7b Flank with irregularly set and shaped, distinct or confluent blotches and spots forming a marbled or mottled pattern, with large roundish brown blotches in some individuals, without midlateral stipe; without a depigmented stripe along anterior part of lateral line........................................................................................... 8 8a Flank completely covered by scales; pre-dorsal back usually with 3–4 saddles............................ O. anatolicus 8b Few isolated scales on flank in front of dorsal-fin origin; pre-dorsal back with dark-brown, fine, mottled pattern, without saddles.............................................................................................. 9 9a Dorsal and ventral adipose crests not elevated from dorsal and ventral profiles, straight, very rarely convex; dorsal adipose crest reaching behind vertical of posterior anal-fin base, absent in some individuals; caudal peduncle depth 1.5–1.9 times in its length; shortest middle caudal-fin ray is 83–91% of longest ray of upper caudal-fin lobe; flank usually with irregularly set and shaped, large blotches distinct from each other, forming a marbled pattern............................... O. eregliensis 9b Dorsal and ventral adipose crests elevated from dorsal and ventral profiles, usually with convex margin; dorsal adipose crest reaching to or exceeding vertical of anal-fin base; caudal peduncle depth 1.2–1.6 times in its length; shortest middle caudal-fin ray is 88–98% of longest ray of upper caudal-fin lobe; flank usually with irregularly set and shaped, confluent, small blotches and spots, forming a mottled pattern; rarely with larger blotches forming a marbled pattern..................... O. axylos