Difflugia tracta  Schönborn, 1966

Diagnosis: Shell remarkably narrow and long, tubular. The sides of the shell are parallel, narrowing only slightly towards the pseudostome. Pseudostome circular. Shell hyaline and filled with quartz pieces.

Dimensions: Schönborn (1966): Shell length 210-219 µm; diameter in the upper shell part 50-52 µm.

Habitat: Freshwater. Littoral sediment of Vuolep Njakajaure (Nedre Laksjön) Sweden.

References: Schönborn, W., 1966. Untersuchungen über die Shellaceen Schwedisch-Lapplands. Ein Beitrag zur Systematik und Okologie der beschalten Rhizopoden II Limnologica. 4:3, 517-559.