Form variation in Puytoracia bergeri Bonnet and a description of P. bonneti n. sp. (Rhizopoda, Filosea).

摘要: Since its description 35 years ago from Quebec, Canada, the poorly known monospecific testate rhizopod genus Puytoracia (type species, bergeri Bonnet, 1970) has been reported only Himalayan region of Nepal. This species was recently found at 13 locations in Ontario, and range form variation widely separated sites is described. At two these sites, boreal forest bogs north-western a second, previously unidentified, also described (as bonneti n. sp.). Differences between were clearly demonstrated statistically using morphometric variables. The large elliptical scales covering test P. (easily seen with relatively low-power microscopy) provide most important criterion for separating this some Trinema having superficially similar morphology (e.g. penardi Thomas & Chardez, or galeata (Penard) Jung.). On basis structure, it suggested that occupies taxonomic position relative to occupied by T. enchelys (Ehr.) Leidy. Results study further confirm logical within family Trinematidae, close to, but distinct from, genera Corythion Trinema.