 Later, Nick forces himself to stay still, and plugs his nose and ears with a torn latex glove.Meanwhile, Grissom manages to get a close screenshot of the ants and identifies them as Solenopsis invicta, a species of fire ant.These are only present in nurseries in Nevada, as the natural soil is unsuited to them, so he cross-references the Expedition's range and the narrowed webcam trace area to narrow the search area to two nurseries.