A tiny spider species lived deep in a cave in Indiana – and scientists had no idea that it existed until recently. Marc Milne, an arachnologist at the University of Indianapolis, discovered under the guidance of one of his colleagues the new species of weaver spiders in the humid and rocky Stygian River Cave
"In the morning, when dew on the grass, and you see the small horizontal walkways – these are tracks, "said Milne to Gizmodo.
The spiders Milne called "Islandiana lewisi" are only about two millimeters long, according to Julian Lewis, who offered him the way to the place. Their bodies are slightly translucent – "dull yellow to brown" – and they have black rings around their eyes. This type of arachnids is known for its flat, densely woven, horizontal webs.
"This is the fifteenth species in its genus (Islandiana) and the fifth known to live exclusively in caves." It has been the last species added to this group for over 30 years, "reports Phys.org.
Milne described the crawlers in a new study published in "Subterranean Biology."
"These specimens were mostly found in nets between the large boulders in the largest room in the cave," Milne said in the journal, adding that the samples were collected in October 2016.
The find is important, Milne points out that unknown species can live anywhere.
"When people remember that new spiders are being discovered, they think of the Amazon or the ice beneath the Antarctic," he told Gizmodo. "But even in our backyard, there are many new, undiscovered organisms that we do not know very much about, people think we know all about the organisms in the Midwest and the United States because we've been through the land, but in reality Not many groups are really under-researched, spiders are just one of them. "