. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 4: 1991. Figs 1-22, pages 70-72. 1 Latrodectus sp. 2 Argyrodes argyrodes. 3 Zoropsis spinimana. 4 Olios argelasius. 5 Cyrtocarenum sp. 6 Trap-door of Cyrtocarenum sp. 7 Nemesia dubia female. 8 Ischnocolus maroccanus (photograph by Peter Kirk). 9 Hersiliola macullulata. 10 Tama edwardsi. 11 Loxosceles rufescens. 12 Uroctea durandi. 13 Web and retreat of Uroctea durandi. 14 Argiope trifasciata, female with male in web above her. 15 Filistata insidiatrix. 16 Web of Filistata insidiatrix. \1 C
. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 4: 1991. Figs 1-22, pages 70-72. 1 Latrodectus sp. 2 Argyrodes argyrodes. 3 Zoropsis spinimana. 4 Olios argelasius. 5 Cyrtocarenum sp. 6 Trap-door of Cyrtocarenum sp. 7 Nemesia dubia female. 8 Ischnocolus maroccanus (photograph by Peter Kirk). 9 Hersiliola macullulata. 10 Tama edwardsi. 11 Loxosceles rufescens. 12 Uroctea durandi. 13 Web and retreat of Uroctea durandi. 14 Argiope trifasciata, female with male in web above her. 15 Filistata insidiatrix. 16 Web of Filistata insidiatrix. \1 Cyrtophoracitricola. \% Stegodyphus lineatus. 19 Palpimanusgibbulus. 20 Web of Stegodyphus lineatus. 21 Peucetia arabica. 22 Retreat of Zodarion sp. The Nemesiidae, Ctenizidae and Cyrtauchenidae are all trap-door spiders. They dig burrows of greater or lesser complexity and mostly finish the burrows with a trap- door. At night they push the door up a bit and sit just under it waiting for prey. Burrows are sometimes found without doors. I think that this is usually due to the doors having been pecked off by Hoopoes. If brought back home and installed in a pot full of sand or peat with a starter burrow sunk in it the spiders establish themselves in the burrows provided and make a trap door. However Nemesia Corsica brought back last year from Corsica has made a sort of curtain or folding door to her burrow. The reason for this difference is not clear to me. Nemesiids which look much the same and are the same size have made trap doors. Nemesiid males have mating hooks on the first pair of legs. These three trap door families used to be classed together as Ctenizidae. The Nemsiidae differ from the Ctenizidae as now defined because they have scopulae and the fovea is recurved. Also they tend, in my experience, to be patterned. The Ctenizidae. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appe
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