Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Unionini | Unionina | Unio
4 available nominal species synonyms (8 total synonyms)
Unio crassus gontieri — Graf (2007)
Eolymnium byzantinum — Kantor et al. (2010)
Unio (Crassiana) crassus — Vinarski & Kantor (2016)
Unio (Eolymnium) byzantinus — Vinarski & Kantor (2016)
Unio crassus — Araujo et al. (2018), Lyubas et al. (2022)
Unio bruguierianus — Lopes-Lima et al. (2021)
Unio vicarius — Lopes-Lima et al. (2024), Hou et al. (2024)
From the Balkans east to Romania and Greece.

There are no specimens for this species in the MUSSELpdb.
CIIMAR_BIV6470. (COI: OR842148, go to Genbank) Devoli River (Seman Basin), Albania (40.655051, 20.955252).
CIIMAR_BIV6471. (COI: OR842149, go to Genbank) ditto.
CIIMAR_BIV6472. (COI: OR842150, go to Genbank) ditto.
CIIMAR_BIV6473. (COI: OR842151, go to Genbank) ditto.
CIIMAR_BIV6490. (COI: OR842152, go to Genbank) ditto.
CIIMAR_BIV7786. (COI: OR842154, go to Genbank) Belitsa River (Danube Basin), Bulgaria (42.99303, 25.63996).
CIIMAR_BIV7787. (COI: OR842155, go to Genbank) ditto.
CIIMAR_BIV7788. (COI: OR842156, go to Genbank) ditto.
CIIMAR_BIV7789. (COI: OR842157, go to Genbank) ditto.
CIIMAR_BIV7790. (COI: OR842158, go to Genbank) ditto.
CIIMAR_BIV7714. (COI: OR842153, go to Genbank) Chernyalka River (Danube Basin), Bulgaria (43.35463, 24.53318).
CIIMAR_BIV8121. (COI: OR842165, go to Genbank) Struma River (Struma Basin), Bulgaria (42.20096, 22.91336).
CIIMAR_BIV8122. (COI: OR842166, go to Genbank) ditto.
CIIMAR_BIV8123. (COI: OR842167, go to Genbank) ditto.
CIIMAR_BIV8124. (COI: OR842168, go to Genbank) ditto.
CIIMAR_BIV8125. (COI: OR842169, go to Genbank) ditto.
CIIMAR_BIV8100. (COI: OR842160, go to Genbank) Strumeshnitsa River (Struma Basin), Bulgaria (41.396195, 23.026089).
CIIMAR_BIV8101. (COI: OR842161, go to Genbank) ditto.
CIIMAR_BIV8102. (COI: OR842162, go to Genbank) ditto.
CIIMAR_BIV8103. (COI: OR842163, go to Genbank) ditto.
CIIMAR_BIV8104. (COI: OR842164, go to Genbank) ditto.
CIIMAR_BIV7826. (COI: OR842159, go to Genbank) Yantra River (Danube Basin), Bulgaria (43.05922, 25.59749).
CIIMAR_BIV6203. (COI: OR842170, go to Genbank) Dobra River (Danube Basin), Croatia (45.5155, 15.47324).
CIIMAR_BIV6204. (COI: OR842171, go to Genbank) ditto.
CIIMAR_BIV6933. (COI: OR842172, go to Genbank) Korana River (Danube Basin), Croatia (45.465889, 15.567194).
CIIMAR_BIV6935. (COI: OR842173, go to Genbank) ditto.
CIIMAR_BIV6936. (COI: OR842174, go to Genbank) ditto.
CIIMAR_BIV6937. (COI: OR842175, go to Genbank) ditto.
CIIMAR_BIV1279. (COI: OR842176, SRA: SRR26935089, go to Genbank) Aliakmon River (Aliakmon Basin), Greece (40.213155, 21.524011).
CIIMAR_BIV1288. (COI: OR842177, mtGenome: OR912555, SRA: SRR26935072, go to Genbank) ditto.
CIIMAR_BIV1289. (COI: OR842178, go to Genbank) ditto.
CIIMAR_BIV1290. (COI: OR842179, go to Genbank) ditto.
CIIMAR_BIV1291. (COI: OR842180, go to Genbank) ditto.
CIIMAR_BIV1292. (COI: OR842181, go to Genbank) ditto.
MNCN_N1878. (16S: KX400180, COI: KX399867, go to Genbank) ditto.
MNCN_N1882. (16S: KX400181, COI: KX399868, go to Genbank) ditto.
CIIMAR_BIV7487. (COI: OR842182, go to Genbank) Aliakmon River (Aliakmon Basin), Greece (40.585011, 22.46003).
CIIMAR_BIV7323. (COI: OR842195, go to Genbank) Kerkinitis River (Strymónas Basin), Greece (41.20551, 23.07617).
CIIMAR_BIV7324. (COI: OR842196, go to Genbank) ditto.
CIIMAR_BIV7325. (COI: OR842197, go to Genbank) ditto.
CIIMAR_BIV7326. (COI: OR842198, go to Genbank) ditto.
CIIMAR_BIV7327. (COI: OR842199, go to Genbank) ditto.
CIIMAR_BIV7328. (COI: OR842200, go to Genbank) ditto.
MNCN_N1906. (16S: KX400182, COI: KX399869, go to Genbank) Lissos River (Lissos Basin), Greece (41.037246, 25.582804).
MNCN_N1907. (16S: KX400183, COI: KX399870, go to Genbank) ditto.
CIIMAR_BIV7149. (COI: OR842183, go to Genbank) Sofaditikos River (Pinios Basin), Greece (39.31565, 22.0824).
CIIMAR_BIV7150. (COI: OR842184, go to Genbank) ditto.
CIIMAR_BIV7151. (COI: OR842185, go to Genbank) ditto.
CIIMAR_BIV7152. (COI: OR842186, go to Genbank) ditto.
CIIMAR_BIV7153. (COI: OR842187, go to Genbank) ditto.
CIIMAR_BIV7154. (COI: OR842188, go to Genbank) ditto.
MNCN_N1916. (16S: KX400184, COI: KX399871, go to Genbank) ditto.
MNCN_N1917. (16S: KX400185, COI: KX399872, go to Genbank) ditto.
CIIMAR_BIV7118. (COI: OR842189, go to Genbank) Sperchios River (Sperchios Basin), Greece (38.87064, 22.35544).
CIIMAR_BIV7119. (COI: OR842190, go to Genbank) ditto.
CIIMAR_BIV7120. (COI: OR842191, go to Genbank) ditto.
CIIMAR_BIV7121. (COI: OR842192, go to Genbank) ditto.
CIIMAR_BIV7122. (COI: OR842193, go to Genbank) ditto.
CIIMAR_BIV7123. (COI: OR842194, go to Genbank) ditto.
MNCN_N1919. (16S: KX400186, COI: KX399873, go to Genbank) ditto.
MNCN_N1920. (16S: KX400187, COI: KX399874, go to Genbank) ditto.
CIIMAR_BIV7343. (COI: OR842201, go to Genbank) Strymónas River (Strymónas Basin), Greece (41.251202, 23.247203).
CIIMAR_BIV7344. (COI: OR842202, go to Genbank) ditto.
CIIMAR_BIV7345. (COI: OR842203, go to Genbank) ditto.
CIIMAR_BIV7346. (COI: OR842204, go to Genbank) ditto.
TUM_RNR03. (COI: OR842207, go to Genbank) Nera River (Danube Basin), Romania (44.88634, 21.70864).
TUM_RNR05. (COI: OR842208, go to Genbank) ditto.
TUM_RNR01. (COI: OR842205, SRA: SRR26935102, go to Genbank) Nera River/Lake (Danube Basin), Romania (44.88634, 21.70864).
TUM_RNR02. (COI: OR842206, go to Genbank) ditto.
MNCN_N282. (16S: KX400188, COI: KX399875, go to Genbank) Çine River (Büyük Menderes Basin), Türkiye (37.763162, 27.83378).
MNCN_N283. (16S: KX400189, COI: KX399876, go to Genbank) ditto.
MNCN_N284. (16S: KX400190, COI: KX399877, go to Genbank) ditto.
MNCN_N285. (16S: KX400191, COI: KX399878, go to Genbank) ditto.
MNCN_N286. (16S: KX400192, COI: KX399879, go to Genbank) ditto.