In a crazy discovery scientists have uncovered what is believed to be the world’s largest known spider web. This web is housing tens of thousands of arachnids deep inside a cave on the Albanian Greek border. The web spans over 1,140 square feet inside Sulfur Cave and is estimated to have 110,000 spiders from two species living in it. The first species is Tegenaria domestic which are common house spiders and Prinerigone vegans.
Researches which include biologist Blerina Vrenozi believe the spiders coexistence may be die to abundant food sources. There are millions of midges swarming within the cave and limited vision caused by darkness. The colony’s web is so dense it’s like a blanket which helps the spiders hide when they feel threatened. The environment also sustains large bat population which also feed on the midges.
What makes this colony unique is the peaceful coexistence if the two side species which normally prey and compete with eachother. Dr. Lena Grinsted, an evolutionary biologist, explained that in most cases close proximity among spiders leads to aggression and predation. She said, “The fact that there was this massive colony of spiders living in a place that nobody had really noticed before. I find it extremely exciting.”
Scientists believe the spiders ability to respond to vibrations rather than visual cues helps maintain the harmony. The environments stability and safety is likely what encourages the spiders cooperation rather than fighting. Dr. Grinsted also said, “Spiders, in general, are not particularly good at seeing studs and that includes these two species” which may also help explain the coexistence.
The discovery was first made in 2021 by Czech speleologists and later studies by international teams. The findings offer great insight into spiders behavior and evolution. Experts hope further research will help the understanding of group living strategies. The webs location on the Greek side of the border has also sparked discussions about conservation and habitat protection.
