Araneus Bicentenarius – Giant Lichen Orb Weaver

While the giant lichen orb weaver may not be the largest orb weaver in terms of diameter, thanks to its massive abdomen, it is one of the heaviest orb weaver spiders. Like most other orb weavers, Araneus bicentenarius is a nocturnal spider and spins large webs.

Giant lichen orb weaver description

Most commonly, the legs of the giant lichen orb weaver are orange colored with black rings. The body is usually a greyish green with dark and white markings on it. Sometimes, the colors may also be close to yellow or a very grey green.

Araneus bicentenarius giant lichen orb weaver
A giant lichen orb weaver found by Linda in Lexington, Texas

Thanks to its intricate markings on the back of the abdomen, the giant lichen orb weaver is often confused with the European garden spider (Araneus diadematus) which also occurs in the U.S. If you can get a close look, you can distingiush the two because the gian lichen orb weaver doesn’t have cross-shaped markings on its back.

Size

Giant lichen orb weavers reach a size of around one inch (2.4cm).

Web

The giant orb weaver spins huge webs of a size up to 8 feet in diameter. Unlike most other orb weavers, Araneus bicentenarius usually spends most of its time on the edges of the web, not in the center. To stay safe from bird predators, orb weaver are mostly active at night and hide throughout the day.

Araneus bicentenaruis seen by Arlene in Vermont

Bite

For humans, the bite of a giant lichen orb weaver is generally not dangerous. At worst, you may experience symptoms comparable to a bee sting. Since the species is active at night, bits rarely occur.

Araneus bicentenarius scientific classification

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Subphylum: Chelicerata
  • Class: Arachnida
  • Order: Araneae
  • Infraorder: Araneomorphae
  • Family: Aranidae
  • Genus: Araneus
  • Species: Araneus bicentenarius

Distribution of the giant lichen orb weaver in the USA

The giant lichen orb weaver is most commonly found in the Eastern States and in the Mid-Western States of the U.S. Hence, Araneus bicentenarius occurs in the following states: Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Vermont, Virginia, West Virginia and Wisconsin.

Araneus Bicentenarius – Giant Lichen Orb Weaver

9 thoughts on “Araneus Bicentenarius – Giant Lichen Orb Weaver

  1. Does this spider do a angry dance when you get too close to its web? My husband and I took a picture of it and afterwards the spider seemed to “dance” to try intimidate us.

    1. Yes, that might happen. Often, orb weavers start “jumping” on their webs to make it move and give the impression of a large threat to whatever is approaching them.

  2. We just had to kill one of these with poisonous insect spray because it built a giant web in our outdoor door frame (we have small children). When we sprayed it it started to do what looked like a weird dance where he put his bottom up in the air and then did like a michael jackson toe stand. We are in Birmingham, Alabama and see these spiders quite frequently.

    1. Hi Julie, these spiders are not dangerous for pets or children. Next time, you could just use a glass jar or a stick to remove it from the area where it is not supposed to be.

    1. Generally, orb-weavers die in winter. They spend the last weeks of autumn to lay eggs and lose a lot of energy during this time. Once the colder tempertures hit, adults will mostly not make it. The next generation overwinters outside in their egg sacs and will hatch during spring and be ready to reproduct next autumn.

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