Mygalomorph Trapdoor Spider, Kempner, TX: 111208

Mygalomorph Trapdoor Spider, Kempner TX 111208The photo on the right was taken by Marvin W., in Kempner, TX on 111208.  Marvin and his wife recently moved to Texas from the frigid northwest (Washington state). Not being familiar with the size of our Texas tarantulas, he first suspected this to be one. As both are orthognaths in the infraorder Mygalomorphae, they share a number of gross anatomical features. However, the leg span of this male (note the swollen distal palps) is about half that of the average Texas tarantula. It may be one of two species of wafer trapdoor spiders found in Texas (Eucteniza rex and E. stolida), a true trapdoor spider in the family Ctenizidae, or a member of one of the other six families of North American Mygalomorphae. In the following pages we will home in on its identity using the keys in Ubick et al, [2005], pp. 25-37. Marvin's wife, a now-repentant arachnophobe, sprayed the first of these spiders--which she found on their back patio just after a cool, autumn rain--with a pesticide. The next morning Marvin found this one, on the same patio. He captured it and took several photos. After looking Marvin's photos over, I asked to borrow the spider for microscopic work, but this one had already been released. Marvin kindly retrieved the remains of the first for me to work with. Macroscopic images of that specimen follow on the NEXT PAGE ---- PAGE MENU:  1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 *

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