Though the spiders are clearly new to Sri Lanka, experts say more genetic research is needed to clarify C. The discovery highlights the rich diversity of Sri Lankan wildlife, and how many spider species are yet to be found. He eventually concluded that the spider was unique, as he and colleagues reported in the British Tarantula Society Journal, and named the species after donor Joni Triantis Van Sickle. Nanayakkara, a prolific spider-hunter from Sri Lanka’s University of Kelaniya, collected some of the shimmery arachnids on an expedition in 2015, then spent two years making detailed physical comparisons between them and known Chilobrachys species. Neighboring India is home to more than two dozen closely related Chilobrachys species, and while many are mostly unremarkably brown, several are similarly adorned. jonitriantisvansicklei is only the second species within the Chilobrachys genus to be found in Sri Lanka the first, a drab brown arachnid called C. “The males,” he notes, “are smaller and are mossy brown in color.”Ĭ. “When we first spotted them I was in awe, lost for words,” Nanayakkara says of the decked-out females. ( Read why science still can’t explain some blue tarantulas.) In fact, it’s these snazzy blue colors that first caught biologist Ranil Nanayakkara’s attention, and flagged the critters-now named Chilobrachys jonitriantisvansicklei-as potentially new to science. Measuring roughly five inches from tip to tip, these spiders are not exactly small, nor are their brilliant blue patches particularly subtle. Living in tubular, silk-lined burrows, they are fast and aggressive, seizing unlucky insects that wander too close to their underground lairs. Scientists found the arachnids within an isolated patch of southwestern rainforest, ringed by tea and rubber plantations. Sri Lanka is home to a new species of tarantula-and its females are fuzzy, turquoise-tinged, and big enough to comfortably hug a donut.
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