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This record is from November second, 2017. I’m uploading it because it may be of some significance to anyone studying arachnids in New York City.
This spider was identified by arachnologists as being a sheetweb spider of the genus Stemonyphantes. This genus is not previously recorded in North America on iNaturalist or bugguide. I found this specimen in November of 2017 in a historic army base, and it’s likely that introduction occurred at some point due to international commerce. I never found a second specimen.