Discophrya helmidis Matthes, 1954

Dovgal, Igor & Pešić, Vladimir, 2012, Suctorian ciliates (Ciliophora, Suctorea) as epibionts of stream-dwelling aquatic beetles (Coleoptera) and water mites (Acari: Hydrachnidia) in the southwestern Palaearctic region, Zootaxa 3166, pp. 34-40 : 35-37

Discophrya helmidis Matthes, 1954

( Fig. 2 )

New records. MONTENEGRO: Plav town, Grnčar river near Gusinje, 30.viii.2006, on Hydraena sp.; TURKEY: Rize Province, Sarayköy stream near Sarayköy village (near Rize city, 41°1'15''N; 40°31'19''E), 270 m. asl., 20.7.2005, on Elmidae (Coleoptera) .

Diagnosis. Suctorian with disc-shape, elongated, flattened cell. Stalk short, cylindrical near the substrate and sharply cup-likely apically flared, with transversal tucks. Clavate tentacles are few in number and evenly distributed over all the edge of the cell. Macronucleus rounded, elongated. There are up to 8 micronuclei. There are 2 – 4 apical contractile vacuoles.

Measurements (from Dovgal 1996): Cell length 19–50 μm, width 15–42 μm, length of stalk 7–30 μm. Remarks. New for Montenegro and Turkey.

Distribution. Germany ( Matthes 1954c, on Hydraena gracilis , H. polita , H. riparia ), Ukrainian Carpathians ( Dovgal 1993, on Hydraena sp., Hydroporus sp.), Balkan (present paper, on Hydraena sp.), Turkey (present paper, on Elmidae ).

Figures

FIGURES 1 – 7. 1 = Setodiscophrya deplanata (Matthes, 1954), from Hydraena sp. (× 640); 2 = Discophrya helmidis Matthes, 1954, from Hydraena sp. (× 640); 3 = Elatodiscophrya hochi (Matthes, 1954), from Hydraena sp. (× 640); 4 = Periacineta buckei (Kent, 1881), from Hydraena sp. (× 640); 5 = Discophrya lichtensteinii (Claparede & Lachmann, 1859), from Torrenticola barsica (× 640); 6 = Acineta sp. from Torrenticola barsica (× 640); 7 = Acineta persiensis Dovgal & Pešić, 2007, from Protzia sp. (× 640).