Wednesday 20 February 2013
Haemopis sanguisuga
It was an even colder start to the day. We worked long into the night drift sampling from a local stream, it was a 15 hour shift today!
The largest species of British leech, Haemopis sanguisuga, otherwise known as the Horse Leech, can grow up to 15cm long. We found this specimin in Llyn Geirionydd yesterday. According to the NBN Gateway, this species has been recorded in St Helens, at Carr Mill Dam. It is not capable of piercing Human skin, or the skin of any mammal.
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