For this Baltimore water treatment plant was at one point infested with 107million orb-weaving arachnids.
That ‘conservative’ estimate is equivalent to 35,176 spiders per cubic metre of space.
stimate is equivalent to 35,176 spiders per cubic metre of space.
107 million orb-weaving spiders got busy making this web in a Baltimore water treatment plant
The “exceptional arachnid productivity” at the Back River Wastewater Treatment Plant was recorded by in 2010 in the American Entomologist journal.
The infestation saw a web measuring covering a surface area of approximately 4-acres
The experts determined a ‘conservative estimate’ of 35,176 spiders per cubic square metre of space
“Far greater in magnitude than any previously recorded aggregation of orb-weavers, the visual impact of the spectacle was nothing less than astonishing. In places where the plant workers had swept aside the webbing to access equipment, the silk lay piled on the floor in rope-like clumps as thick as a fire hose.”
Some of the webbing managed to full 8-ft long light fixtures out of place
And some of the webbing was found to be as ‘thick as a fire hose’
More than 31,000 species were extracted from web samples, with the majority made up of Tetragnatha guatemalensis and Larinioides sclopetarius.
The spiders were surviving on the plentiful supply of midges from the water