 Female. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
California trapdoor spider Bothriocyrtum californicum Araneae: Ctenizidae Upper Newport Bay, CA colonies:Colony #1 | Colony #2 Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. Back to Spider index page |
 Female: short, thick legs and a brown abdomen. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
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 Male: longer, thinner legs and a redder abdomen. Irvine, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Male. Irvine, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Male, showing pedipalps used for transferring sperm to the female. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Male. Irvine, CA. 12/23/09. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Pedipalp of male. Irvine, CA. 12/23/09. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Face of male. Irvine, CA. 12/23/09. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Trap door closed. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Trap door opened by the photographer. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Female attempting to close the trap door. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Female inside a burrow that has been cut open. The trapdoor, at the top, has a beveled edge which fits tightly into the opening. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Female with spiderlings in the bottom of the burrow. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
 Spiderlings in the bottom of the burrow. What do they eat? According to Michael Lubert, the mother feeds them with the excess of the food she captures until they are large enough to disperse. Upper Newport Bay, CA. Copyright: Peter J. Bryant (pjbryant@uci.edu). Contact for originals. |
| Additional sites: Parasites of the Trap Door Spider Bothriocyrtum californicum (Araneae, Ctenizidae) by Martin G. Ramirez, Department of Biology, Loyola Marymount University, Los Angeles, CA 90045-8220 | |