While capable of making strands of silk, evidently to aid mobility, the spider is not known to construct webs or nets. It hunts and pounces on prey like a wolf spider. Also, like a wolf spider, it carries its newly hatched young on its back. The up-island spider is known to inhabit only a small range above the narrow tidal isthmus that connects the northern and southern halves of the island of Islesboro. Islesboro residents believe that the center of the up-island spider population distribution is the area around a local church, leading to speculation that the spiders might have arrived on the island in a coffin. "Hearse house" spider is thought to be the oldest name for the spider because long ago they were found in the carriage houses where hearses were stored.
There have been limited reports of sightings of these spiders down-island, but they appear to be smaller and not as common as those frequently seen up-island.
alleged image of up-island spider (read the comments)