. The common spiders of the United States. Spiders. ii6 THE COMMON SPIDERS is gray, with a long black spot in the middle and a smaller one over the epigynum. There is little difference in size or color between the sexes. The epigynum (fig. 269) has two round holes, wide apart, near the thickened edge. The palpal organ (fig. 268) is shorter and simpler than it is in differeiis. Theridium spirale. — This is a round-bodied spider of the same size as diffcrcns and murarium. The cephalothorax is orange brown above and below, with an indistinct dark stripe as wide in front as the eyes and narrowed b

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. The common spiders of the United States. Spiders. ii6 THE COMMON SPIDERS is gray, with a long black spot in the middle and a smaller one over the epigynum. There is little difference in size or color between the sexes. The epigynum (fig. 269) has two round holes, wide apart, near the thickened edge. The palpal organ (fig. 268) is shorter and simpler than it is in differeiis. Theridium spirale. — This is a round-bodied spider of the same size as diffcrcns and murarium. The cephalothorax is orange brown above and below, with an indistinct dark stripe as wide in front as the eyes and narrowed behind. The abdomen has a middle stripe like dif- fcrc7is, nearly as wide in front as it is in the middle (fig. 271), The rest of the abdomen is gray, darkest to- ward the stripe. The legs are pale, sometimes with faint gray rings at the ends and middle of each joint. The middle stripe of the abdomen is sometimes red- FiGs. 267, 268, 269. Theridium murarium. dish as in iHurariitin, but oftcncr — 267, female enlarged eight times. 268, . , , , , end of palpus of male. 269, epigymim. g^ay. With a dark spot near the front end. The males (fig. 270) have the same color and markings as the female and are sometimes more distinctly marked. The male palpi (fig. 272) are very large, and the palpal organ has a long tube coiled on the under and outer side. The openings of the epigynum (fig. 273) are about their diameter apart. Theridium frondeum. — White, light yellow, or greenish white, with black markings that are very variable (fig. 274). Usually the cephalothorax has two fine black lines running back from the eyes and uniting behind the dorsal groove, and black edges. The legs are usually darkened with brown at the ends of the. 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 work.. Emerton, J. H. (James Henry), 1847-1930