Black Widow identification is fairly straightforward. If disturbed or threatened, this spider may immediately drop to the ground in an attempt to flee and hide. It is important to remember that spiders seen in New Hampshire are not bound by the territorial lines decided on by humans, therefore their distribution is subject to change. No doubt that the Northern Black Widow spider is the best known New Hampshire cobweb spider. Only the females get classified as spiders of medical importance. The black and yellow garden spider egg sac is hanging in calendula flowers.

Males and females have black bodies. Widows are known for a red marking on the underside of their abdomen, recluse spiders are brown and have hairy abdomens, and the sac spider has a greyish body with red legs. There are three known species of poisonous spiders that may inhabit New Hampshire residences: the Black Widow, the Brown Recluse, and the Broad-Faced Sac Spider. Spider Search allows you to narrow down a spider's species by both unique identifying traits, and primary colors. Instantaneous filtering and sorting of the 566 covered spider species at your fingertips.

It may also begin bouncing on its web in an effort to confuse a predator by making it difficult to get a clear view of it. Males and juveniles of both species tend to have white markings on the abdomen. Spiders found in New Hampshire include 36 unique species from confirmed sightings by contributing members of Spider ID. Garden Spider Reproduction The males are much smaller and build smaller webs near or connected to the female’s web. For a more advanced view of spiders currently covered by Spider …