Giant Lichen Orbweaver

Description:

Orbweavers in our area range from miniscule to enormous. While not the largest in terms of leg span or body length, the giant lichen orbweaver is certainly the heaviest. It is usually about an inch long and very robust. Some orbweavers can be found in their webs at all times, but this species is one of those that hides in a retreat at the edge of its web during the day. More frequently encountered are the enormous webs, which often span a gap of 8 feet or more. By following the main lines of silk to their upper anchors, it is usually possible to find the spider in its hiding place (seen in last photo with remains of prey). The probable reason for this spider's nocturnal habit is bird predation. The markings on the backs of these spiders vary considerably, but always blend in very well with their surroundings, so they do well to remain still and nearly undetectable in their tree limb hideaways.

Habitat:

Deciduous Forest. This spider was spotted in the Cumberland Gap National Historical Park.

Notes:

Species name comes from the fact that it was discovered and named during Philadelphia's bicentennial celebration. The web spun by this orbweaver is much thicker and stronger than other orbweavers due to it's weight.