Oxynoemacheilus theophilii Stoumboudi, Kottelat & Barbieri 2006
Creators: name: Yoğurtçuoğlu, Baran
name: Kaya, Cüneyt
name: Freyhof, Jörg
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cypriniformes
Nemacheilidae
Oxynoemacheilus
Oxynoemacheilus theophilii

description: Oxynoemacheilus theophilii Stoumboudi, Kottelat & Barbieri 2006
(Fig. 13)
Oxynoemacheilus theophilii Stoumboudi, Kottelat & Barbieri 2006:140, Figs. 8–9 (type locality: Lesbos Island, Tsingou springs, in Evergetoulas drainage, Greece)
Barbatula bergamensis Erk‘akan, Nalbant & Özeren 2007:71, Fig. 3 (type locality: Bergama, Kozak (Madra) Creek, 39°40‘N, 27°28‘E, Turkey)
Material examined. FFR 15538, 21, 36–56 mm SL; Turkey: İzmir prov.: Karadere stream a tributary of Bakır River 15 km east of Bergama, 39.1299 27.3723.— FSJF 3052, 17, 33–58 mm SL; Turkey: İzmir prov.: Kemer stream at Aşağımahalle, 4 km north of Bergama, 39.1559 27.1600.
Additional distribution records. Erk’akan et al. 2007: 39.1147 27.2839; Barbieri et al. 2015: 39.1744 26.4223; unpublished records: 39.1000 26.3500, 39.2600 27.2700.
Diagnosis. Oxynoemacheilus theophilii is distinguished by a combination of characters none of them unique to the species. It is distinguished from O. anatolicus, O. angorae, O. eregliensis, O. isauricus, O. germencicus and O. nasreddini by having an almost uniform body depth between the dorsal- and caudal-fin bases, or body depth very slightly decreasing (depth of caudal peduncle 87–97% of body depth at anterior-most dorsal fin base vs. 68–79 in O. anatolicus, 70–83 in O. angorae and O. eregliensis, 72–82 in O. germencicus, 60–77 in O. isauricus, and 70–86 in O. nasreddini). It is further distinguished by having a moderately deep caudal peduncle (caudal-peduncle depth 1.3–1.6 times in length (vs. 1.5–1.8 in O. angorae and O. germencicus, 1.5–1.9 in O. eregliensis, 2.2–2.6 in O. isauricus, 1.5–2.1 in O. nasreddini), an emarginate caudal fin (middle caudal-fin ray 71–80% of length of longest upper caudal-fin ray vs. slightly emarginate or almost truncate, 84–93 in O. anatolicus, 88–92 in O. angorae, 83–91 in O. eregliensis and deeply emarginate, 65–76 in O. mediterraneus), and no depigmented stripe along the anterior part of the lateral line (vs. usually present in O. angorae). It is further distinguished from O. mediterraneus by the tip of pectoral fin not reaching the pelvic-fin origin in male (vs. usually reaching).
Distribution. Oxynoemacheilus theophilii is found in the Bakır River drainage in western Anatolia. It also occurs on the Greek island of Lesbos.
Remarks. Based on our COI dataset, O. theophilii is well separated from all other studied Oxynoemacheilus species, including by a minimum K2P distance of 2.7% to O. eliasi, its closest relative. It is also supported as a distinct species by the PTP approach, but not by the mPTP delimitation.
description: Published as part of Yoğurtçuoğlu, Baran, Kaya, Cüneyt & Freyhof, Jörg, 2022, Revision of the Oxynoemacheilus angorae group with the description of two new species (Teleostei: Nemacheilidae), pp. 451-485 in Zootaxa 5133 (4) on pages 471-472, DOI: 10.11646/zootaxa.5133.4.1, http://zenodo.org/record/6530889