HYDRACHNIDAE Leach, 1815

Pešić, Vladimir, Smit, Harry, Gerecke, Reinhard & Sabatino, Antonio Di, 2010, The water mites (Acari: Hydrachnidia) of the Balkan peninsula, a revised survey with new records and descriptions of five new taxa 2586, Zootaxa 2586 (1), pp. 1-100 : 8-9

Family HYDRACHNIDAE Leach, 1815

Genus Hydrachna Müller, 1776

Hydrachna bulgarensis K. Viets, 1940

Records from the study area: Bulgaria: “ H. perpera bulgarensis “ K. Viets (1940) ,“ H. perpera bulgarensis “ Petrova (1971) ; ranked at species level by Davids et al. (2005).

Habitat: Littoral of lakes.

Distribution: Balkan, only known from the type locality (lake in the Rila Mountains).

Hydrachna conjecta Koenike, 1895

New records: Greece: Makedonia: Florina, pond between Lake Mikra Prespa and Lake Megali Prespa, 04.v.1997 Smit (0/1/0); Florina, Lake Himaditis, 03.v.1997 Smit (1/1/0) .

Records from the study area: Bulgaria: Petrova (1971).

Remarks: New for Greece.

Habitat: All kind of standing waters (lakes, ponds).

Distribution: Palaearctic.

Hydrachna crassipalpis Piersig, 1897

Records from the study area: Serbia: Pešić et al. (2007c).

Habitat: Small standing waters.

Distribution: Central and Northern Europe, Serbia.

Hydrachna cruenta Müller, 1776

Records from the study area: Bulgaria: Valkanov (1957), Petrova (1971).

Habitat: Ponds.

Distribution: Holarctic.

Hydrachna geographica Müller, 1776

Records from the study area: Serbia: Pešić et al. (2007c).

Habitat: Small standing waters.

Distribution: Holarctic.

Hydrachna globosa (De Geer, 1778)

New records: Albania: Cattle pond Murri, 39° 43.80 N 20° 03.14 E, 22.v.2001 Van Nieuwenhuijzen (0/1/ 0); Lake Megali Prespa, Liqenas, 40° 47.42 N 20° 54.49 E, 27.v.2001 Van Nieuwenhuijzen (0/1/0) .

Records from the study area: Croatia: Matoničkin (1987); Montenegro: “ H. uniscutata “ Pešić (2002c) ; Serbia: Đorđević (1903), Ratajac & Rajaković (1992), Pešić (2003e), Pešić et al. (2007c); Macedonia: Đorđević (1906), Stanković (1931), K. Viets (1936), Georgiev (1957), Schwoerbel (1963), “ H. uniscutata , H. globosa “ Pešić (2003j) , Baker et al. (2008); Bulgaria: K. Viets (1926), Arndt (1943), Petrova (1971); Greece: „ H. globosa ?“ Stephanides (1971), Davids (1977).

Remarks: New for Albania.

Habitat: All kinds of standing waters, occasionally in slow running streams.

Distribution: Palaearctic.

Hydrachna incisa Halbert, 1903

Records from the study area: Greece: Davids et al. (2005).

Habitat: Lake.

Distribution: A few scattered records in Europe, rare.

Hydrachna skorikowi (Piersig, 1900)

New records: Greece: Makedonia: Xanthi , small temporary pond near Aladjugala Lakes, Nestos Delta, 28.iv.1997 Smit (2/0/0) .

Records from the study area: Macedonia: Schwoerbel (1963), Pešić (2003j); Bulgaria: Petrova (1971).

Remarks: New for Greece.

Habitat: All kinds of standing and slow running waters.

Distribution: Palaearctic.