Spider,possibly a new species.?

Question

i wish i had a picture of it,and i cannot find it online.

Anyways i spotted this spider on Kelly's Island,it is black and small,its butt is shaped like an upside down pyramid,or diamond.And the pattern is a white lasting triangle(spiraling down). the shape of the butt is like its house or something :X anyways it has short front legs.

that is all i can describe because that's all i remember.

Answer 1

There are a number of species of spiders that have pyramid shaped bodies. The argyrodes

http://bugguide.net/index.php?q=search&k...

The cyclosa

http://bugguide.net/index.php?q=search&k...

Then there are a couple of families that defy word descriptions.

the gasteracantha

http://bugguide.net/index.php?q=search&k...

and the micrathena

http://bugguide.net/index.php?q=search&k...

or you could post a picture of your spider.

Answer 2

Kelly's Island Newfoundland or Kelley's Island Ohio?

Either way, the spider you are describing sounds like it is a member of a group known for variation in its coloration.  If it was a house cat, and you had only ever seen tabbies, a tuxedo cat would throw you off.  Reconsider the spider with less emphasis on the markings.