picrophilus oshimae picrophilus oshimae picrophilus oshimae is a species of archaea described in 1996. picrophilus oshimae was found in a fumarole in hokkaido, japan. the hot spring the fumarole was located in had a ph of 2.2. picrophilus oshimae scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: thermoplasmata order: thermoplasmatales family: picrophilaceae genus: picrophilus species: p. oshimae binomial name picrophilus oshimaeschleper et al. 1996