The Katipo spider is referenced here as a “night biter” so his attack was true to his form. The bites are not normal deadly but can make on very sick it appears. BD
The 22-year-old Canadian, who had earlier left his clothes in the sand dunes while he went for a "skinny dip", then spent 16 days in hospital suffering from potentially fatal heart inflammation.
"He woke to find his penis swollen and painful, with a red mark on the shaft suggestive of a bite," Dr Nigel Harrison, who treated the man, writes in the latest New Zealand Medical Journal.
"It was a rather nasty, ill-placed bite," Dr Harrison said.
By the time the tourist reached the nearest hospital, in the northern town of Dargaville, his penis was severely swollen, his blood pressure was up and his heartbeat racing.
The following morning, chest pain and other symptoms developed and doctors diagnosed he had been bitten by a katipo, a rare native spider related to the Australian redback and North American black widow spiders. It is the first known case of myocarditis, or heart inflammation, occurring after a katipo spider bite.