|   T. volzii
 v. volzii ?
 26 x 16 μm
 Ikenokochi m.4
 Tsuruga
 Fukui, 2006
 
  |   T. volzii
 v. volzii ?
 μm
 Hanadate S.W.
 Yuri-Honjo
 Akita, 2008
 
  | 
|   T. volzii
 v. cylindracea ?
 25 x 16 μm
 Onnenai
 Kushiro marsh
 Hokkaido, 2005
 |   T. volzii
 v. cylindracea ?
 27-29 x 15-17 μm
 Demaru-nakago
 Kawajima
 Saitama, 2005
 |   T. volzii
 v. cylindracea ?
 24 x 16 μm
 Kitamoto nature o.p.
 Kitamoto
 Saitama, 2005
 |   T. volzii
 v. cylindracea ?
 29 x 14 μm
 Tane-ike
 Togakushi highland
 Nagano, 2005
 | 
|   T. volzii ?
 collar dented
 32 x 20 μm
 drainage ditch
 Sakura
 Chiba, 2008
 
  |   T. volzii
 or T. dubia ?
 27 x 14 μm
 Omine-numa
 Tsukiyono
 Gunma, 2003
 |   T. volzii
 v. cylindracea ?
 37 x 15 μm
 Ohnuma
 Nasu-shiobara
 Tochigi, 2006
 
  |   T. volzii
 v. cylindracea ?
 24.12.5 μm
 Kashibaru m.
 Karatsu
 Saga, 2008
 
  |