Description of Kahayandrilus tundaiensis gen. et sp. nov. (Annelida: Clitellata: Tubificinae) from Central Kalimantan, Indonesia

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Kahayandrilus tundaiensis gen. et sp. nov. is described from an oxbow lake in Central Kalimantan, Indonesia. Although the taxonomic affinities are unknown, the genus differs from other genera in Tubificinae in having ovoid atria with long ejaculatory duct with uniform width, and large penes with soft and thick wall.