The New Yorker:

Jon Sperling secretly spread a non-native species across the Northeast. “It’s insane what this guy was doing,” a biologist said.

By Ben Goldfarb

The Italian wall lizard—a cigar-size Mediterranean reptile with a green back, mottled copper flanks, and a whiplike tail—is more or less the animal you picture when someone says the word “lizard.” Their ubiquity in places like Pompeii and the Colosseum has earned them the moniker “ruin lizards.” Their known range extends to Slovenia, Croatia, and, since the nineteen-sixties, Long Island, which they may have colonized after making their way out of a Hempstead pet store. Podarcis siculus thrived in the urban wilds of Garden City, feasting on spiders and crickets and sheltering in sidewalk cracks. By the two-thousands, according to one Hofstra University biologist, the area had become home to tens of thousands of the creatures. The New York Lizards, a now-defunct Major League Lacrosse team, adopted a large-eyed lizard as its mascot.

Italian wall lizards have also spread. They have popped up in Pelham Bay Park, in the Bronx; Cypress Hills National Cemetery, on the border of Brooklyn and Queens; and the Baker Athletics Complex, at the northern tip of Manhattan. In 2014, a Greenwich resident reported a sighting on the Facebook page of Connecticut’s environmental-protection agency. The post inspired Colin Donihue, then a Ph.D. student studying lizard evolution at Yale, to visit Greenwich and, in newspapers and on his Web site, solicit more observations from the public. In 2016, he learned that wall lizards were living in Fenway Victory Gardens, in Boston, where they likely overwintered in the heat of compost piles—Fenway’s second-most-famous green monsters. “They can make a lot of different habitats work for them,” Donihue told me. “They’re pretty adapted to living alongside humans.”

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