The cellar spider has long legs to keep prey arm length. Their fangs are small but packs lots of venom! When it seeks a prey it swirls on its legs or pumps its legs to turn invisible. Cellar spider silk is not strong nor sticky but it has lots of it. The females are 7 to 8 millimeters and the males are 6 millimeters. Its full name is Pholcus phalangioides meaning cellar spider.