The brown spider monkeys have been absent for awhile now. The zoo had an elderly pair a few years back Kirby and Desi. Kirby passed away in 2017-ish? I think. She was about 31 which is very old for a spider monkey. Desi remained at the zoo for over a year after Kirby’s passing but I didn’t see him since Kirby died. He was sometimes out but not too much, he was kind of semi-retired in his old age. Both him and Kirby were like semi-retired since like 2016 and I only saw Kirby and Desi once since then shortly before Kirby died. Desi left for Europe in mid-to-late 2018, and by that time he was already about 25. By the time he left, Desi was the last remaining brown spider monkey in the U.S. since San Diego’s elderly pair passed away about a year before Desi left. Spider monkeys typically live to around 20 years like most monkeys and lemurs. The zoo has three black-headed spider monkeys, two older females Arana and Chanza, who are already 30 and 24 years old which is already very old for spider monkeys. The younger male Duke is only 6.