. The common spiders of the United States. Spiders. THE ATTIDAL. The Attidae are jumping spiders, many of them brightly colored and quick in their movements and living in open places among the tops of low plants. They are usually short and stout spiders, with a large cephalothorax, which is wide in front, where the eyes have a peculiar arrangement in three rows (fig. 118), somewhat as in the Lycosidae, but with the middle eyes of the front row much the largest, so that at first sight many of them appear to have only two eyes. The eyes of the second row are very small and hard to see, and those
. The common spiders of the United States. Spiders. THE ATTIDAL. The Attidae are jumping spiders, many of them brightly colored and quick in their movements and living in open places among the tops of low plants. They are usually short and stout spiders, with a large cephalothorax, which is wide in front, where the eyes have a peculiar arrangement in three rows (fig. 118), somewhat as in the Lycosidae, but with the middle eyes of the front row much the largest, so that at first sight many of them appear to have only two eyes. The eyes of the second row are very small and hard to see, and those of the third row are far back on the head and usually turned a little backward. The front legs are usually thicker than the others, especially in the males. The relative length of the legs is variable, the first pair being commonly the longest, but some- times the fourth and even in some species the third pair. The feet have two claws, with many fine teeth and a thick brush of hairs. I The Attidae are usually thickly covered with hair or scales, often brightly colored or iridescent, and their appearance is often entirely changed by rubbing or wetting. They walk backward or sidewise as well as forward, and many of them jump great distances. They make no cobwebs, but some species make silk tubes or bags on plants or under stones in which they hide to molt or lay their eggs or to pass the winter. There are often great differences in color and mark- ings between the sexes, and the males have peculiar bunches 41 Fig. 118. Front of head of Phidippus niystaceus, show- ing eyes and man- 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
