Faunistic survey on freshwater annelids from Korea Author Lee, Jeounghee Author Jung, Jongwoo text Journal of Species Research 2016 2016-10-31 5 3 279 288 http://dx.doi.org/10.12651/jsr.2016.5.3.279 journal article 10.12651/JSR.2016.5.3.279 2713-8615 13142457 12. Tubifex ignota Štolc, 1886 Lophochaeta ignota Štolc, 1886: 646 . Tubifex ignotus (Štolc) : Laakso, 1969 . Hrabě, 1981 . Chekanovskaya, 1981 . Material examined. One individual was collected from Sugok­ri , Amtae­myeon , Sinan­gun , Jeollanam­do , E: 126°6′17.63″ N : 34°45′46.02″, 7 Mar 2013 (collector: Kim H ). This specimen was mounted on a slide and deposited at NIBR ( KOSPIV0000206600 ) . Remarks. This species shows unique feature having long and hispid (barbed) hair chaetae ( Fig. 1I ) ( Timm, 2009 ; Rodriguez and Achurra, 2010 ). The shape of our specimen agrees with this diagnostic feature of T. ignota . World distribution. Holarctic.