Theromyzon tessulatum

External morphology

4 annuli between gonopores, 2 paramedial lines on the dorsum. Semitransparent olive green color. In some population color can be brightly green. Often have yellow patches on dorsal side. In fed specimen is gut and intestine clearly visible.

Habitat & range

Habitat

Freshwater

Region

North America, Europe, Asia

Recorded from

Alberta Canada, Japan

Biology

Parasiting in nasal cavities of water birds, most commonly ducks

Junior synonyms

Theromyzon sexoculatum

Original description

Müller, O. F. (1773-1774). Vermium terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. [Book] Vol. 1: 1-136 Infusoria [1773] / Vol1 [part 2] 1-78 Helminthica 1-72 [1774] ; Vol. 2: 1-214 Testacea + index 8 pp. [1774]. Havniæ (Copenhagen) & Lipsiæ (Leipzig): Heineck & Faber.

biodiversitylibrary.org

Sources used for this page

Hirudinida pijavice - Determinace vodních bezobratlých