. The common spiders of the United States. Spiders -- United States. i86 THE COMMON SPIDERS The webs of Zilla (fig. 432) have a segment left without cross threads, sometimes for its whole length, and sometimes only the part of it nearest the center. Opposite this open segment a thread leads from the center of the web to the nest (fig. 433), which is a tube of silk open at both ends. The differences between the palpi of the males are very plain. In atrica the palpi (fig. 434) are as long as the whole body, with the femur and tibia both slightly curved and the tarsus and palpal organ small and l
. The common spiders of the United States. Spiders -- United States. i86 THE COMMON SPIDERS The webs of Zilla (fig. 432) have a segment left without cross threads, sometimes for its whole length, and sometimes only the part of it nearest the center. Opposite this open segment a thread leads from the center of the web to the nest (fig. 433), which is a tube of silk open at both ends. The differences between the palpi of the males are very plain. In atrica the palpi (fig. 434) are as long as the whole body, with the femur and tibia both slightly curved and the tarsus and palpal organ small and like that of x-notata. In x-notata (fig. 435) the palpus is as long as the cephalothorax, and the tarsus and palpal organ small and round. The front legs are a fourth longer than in atrica. In tnontana (fig. 435^) the palpus is still shorter, the tibia thicker, and the tar- sus and palpal organ larger. There is little difference in the shape of the epigynum of the different species, but that of montana is twice as large as that of x-notata or atrica. Singa pratensis. — The Sin gas are small Epeiridse a sixth or fifth of an inch long, with smooth bodies and bright colors. They live among grass and other small plants in low open ground. When full grown the females of S. pratensis are a fifth of an inch long, with the abdomen oval and marked with a double white stripe in the middle and a single one on each side. The cephalothorax is yellow, with a little black between the middle eyes not extending to the lateral Fig. 433. Tubular nest of Zilla Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Emerton, J. H. (James Henry), 1847-1930. Boston, London, Ginn & Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectspiders, bookyear1902
