Glossiphoniidae Vaillant 1890

K EY TO THE LEECHES OF THE FAMILY GLOSSIPHONIIDAE VAILLANT, 1890 OF THE FERGHANA VALLEY 1. Eyes four pairs................................................................................................................................................. ............. Theromyzon tessulatum (Müller, 1974). Recorded from Uzbekistan but not from the Ferghana Valley. — Eyes one, two or three pairs ......................................................................................................................... 2 2. Eyes one pair; dorsal dark scute in trachelosome region ......................... Helobdella stagnalis (Linnaeus, 1758) — Eyes two or three pairs ................................................................................................................................. 3 3. Eyes two pairs; anterior sucker distinct from body ....................... Hemiclepsis marginata (O. F. Müller, 1974) — Eyes three pairs; anterior sucker not distinct from body ............................................................................... 4 4. Eyes of first pair located much closer to each other than eyes of two other pairs ............................................. .................................................................................................. Alboglossiphonia Lukin, 1976) .................. 5 — Eyes of all pairs are equally spaced ............................................ Glossiphonia Johnson, 1816 ..................... 6 5. Tiny tubercles and no black pigment on dorsum................................ Alboglossiphonia hyalina (Müller, 1774) — Large tubercles and black pigment pattern on dorsum.................... Alboglossiphonia weberi (Blanchard, 1897) 6. Two conspicuous paramedian dorsal dark lines regularly interrupted by tubercles .......................................... ...... Glossiphonia complanata (Linnaeus, 1758). Recorded from Uzbekistan but not from the Ferghana Valley. — Dorsal dark lines and tubercles absent ...... Glossiphonia ferghanensis Solijonov, Izzatullaev & Kuchboev, 2022

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