. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Coxa Trochanter Trochanter notch Fig. 4. Trochanter notch. hairs of the abdomen are almost exclusively short and plumose. Abdominal hair pat- terns are often, but not always, reinforced by underlying pigment patterns (as the red abdominal spot in C. descripta, C. crocata, C. jloridana, and C. occidens). Tlie sternum is usually sparsely covered with long simple hairs or thicker setae (see section on abdominal setae below). The legs are usually covered with non- erect, simple hairs, and density is expressed as lightly,
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Coxa Trochanter Trochanter notch Fig. 4. Trochanter notch. hairs of the abdomen are almost exclusively short and plumose. Abdominal hair pat- terns are often, but not always, reinforced by underlying pigment patterns (as the red abdominal spot in C. descripta, C. crocata, C. jloridana, and C. occidens). Tlie sternum is usually sparsely covered with long simple hairs or thicker setae (see section on abdominal setae below). The legs are usually covered with non- erect, simple hairs, and density is expressed as lightly, moderately, or heavily hirsute. Thorocic groove. The thoracic groove ("fovea" of British arachnologists) (Fig. la) is expressed as weak, moderately weak, moderate, moderately strong, or strong, de- pending on its length and depth. In some taxa it is entirely absent and is often re- placed with a poorly defined thoracic im- pression. Trochanter IV notch. On the distal, ven- tral margin of the trochanter (second seg- ment of the leg) there is often a small notch (Fig. 4). Tliis notch is usually rounded and is strong, moderate, weak, or absent. Sculpture. Sculptural characteristics are not found extensively in the Castianeira, but are used in Mazax, where great differ- ences in surface textures exist. Surfaces are described as granulose, rugose (full of wrinkles), or Tibia Patella Fig. 5. Tibia I ventral spination: 3-2. Spinution. The legs are usually quite spiniferous, but the number and positions of the spines are relatively variable within a species. The ventral spination of the tibia of leg I is reported because the spination is fairly constant, easily observable, and often useful in distinguishing between species or species-groups. Of the two numbers in the notation (, see Fig. 5), the first repre- sents the prolateral ventral spines and the second the retrolateral ventral spines. In addition, the spines are described as weak, moderate, or strong (chara
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