First data on the Hirudinea fauna of lotic ecosystems of the Khanty-Mansi Autonomous Area (Russia) Author Fedorova, Lyudmila I. Surgut State University, 1 Lenin Ave., Surgut 628412, Russia Author Kaygorodova, Irina A. https://orcid.org/0000-0002-7413-5018 Limnological Institute, Siberian Branch of Russian Academy of Sciences, 3 Ulan-Batorskaya St., Irkutsk 664033, Russia irina@lin.irk.ru text ZooKeys 2022 2022-01-19 1082 73 85 http://dx.doi.org/10.3897/zookeys.1082.71859 journal article http://dx.doi.org/10.3897/zookeys.1082.71859 1313-2970-1082-73 94FC6758B2E3492080D1BF19FBD6DEF6 EF2E2B91FF275F57AEE832CD06F5D6FF Hemiclepsis marginata ( Mueller , 1774) Hirudo marginata O. F. Mueller , 1774 Piscicola marginata Moquin-Tandon, 1827 Clepsine marginata F. Mueller , 1844 Hemiclepsis marginata Harding, 1910 Geographical distribution. Palaearctic region. Species has wide but uneven distribution. In Europe, this species is common in countries with temperate climates. Rarely found in North Africa. It has a nonuniform distribution in the Caucasus, Central Asia, Western and Eastern Siberia, the Far East, China, and Japan ( Lukin 1976 ). Locations. Ob River ( 61°5'38.04"N , 69°27'38.66"E ; 60°57'56"N , 68°46'38"E ), Shaitanskaya River ( 61°4'50.4"N , 69°28'51.9"E ), Zhivoy stream ( 60°53'22"N , 68°41'40"E ), Mukhrinka River ( 60°53'42"N , 68°42'51"E ), Kabaniy stream ( 60°54'4"N , 68°42'55"E ), Okhotnichiy stream ( 60°56'9"N , 68°41'52"E ), Sredniy stream ( 60°55'24"N , 68°42'46"E ), Irtysh River ( 61°0'58"N , 69°9'26"E ; 61°0'14"N , 68°59'10"E ; 60°59'57"N , 68°59'19"E ; 60°59'37"N , 68°59'22"E ), Mamontovyi creek ( 60°57'18"N , 68°32'27"E ), Bolshoi Yugan River ( 60°17'33.0"N , 73°53'38.0"E ).