Wolf Spider (Lycosidae), Kempner, TX: 120508 pg 5

Wolf Spider, Kempner TX 120508 ventral spinneretsWolf Spider, Kempner TX 120508 Ventral AbdomenThe spinnerets (photo at far right) are relatively short, but project outward from the apical posterior abdomen, in the manner of most labidognath ground spiders (mygalomorph  ground spiders, by contrast, have spinnerets that erupt from the posterior ventral abdomen, then trail back, posteriorly), rather than downward as in most orbweavers. Wolf spiders, along with all other labidognaths, have three pairs of spinnerets, though only two pairs are showing in this photo; the third (median) pair is diminutive, and is hidden by the larger anterior and posterior pairs. Note that the ventral abdomen (photo at immediate right) is absent any signs of a cribellum. The lighter regions on the lateral anterior abdomen show the sclerotized coverings over the single pair of book lungs; the epigastric furrow, i.e., the respiratory opening for the book lungs, is visible, posterior to and extending beyond either side of, the epigynum (the reddish region at the abdomen's midline), in the form of a curved latitudinal slit that extends halfway across the abdomen. NEXT PAGE ---- PAGE Menu:  1 * 2 * 3 * 4 * 5 * 6 * 

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