Gorgyrella inermis produces four distinct burrow architectures.
Open burrows are used as permanent dwellings and sites for prey ambush. Components of burrows include one surface opening, a single shaft or tunnel, and in some cases a circular to ovoid chamber. Burrows are vertical (80°–90°) or subvertical (60°–75°) in orientation. Shafts, tunnels, and chambers are circular to elliptical in cross section; chambers are up to two times the size of the shafts and tunnels. Shafts and tunnels are straight and generally have a consistent width along their length. Shaft and tunnel walls are either smooth with multiple scratch marks along their length when they have a thick silk lining or irregular when they have no silk lining.
Additional resources are available within the downloadable PDF and Excel files linked at the bottom of the page.
Additional resources
African Trapdoor Spider Burrow Catalog (PDF)
African Trapdoor Spider Burrow Info Packet (PDF)
African Trapdoor Spider Burrow Data Spreadsheet (Microsoft Excel – Auto Download)