The Common Spiders of the United StatesEmerton, J. H. (James Henry)
Science
The Common Spiders of the United States
Emerton, J. H. (James Henry)
Spiders -- United States
[Illustration: FIGS. 306, 307. Pholcus phalangioides.--306, female and
male natural size, and cephalothorax of female much enlarged. 307,
mandibles of male.]
[Illustration: FIG. 308. Web of Pholcus phalangioides between two
shelves in a cellar.]
$Pholcus phalangioides.$--This is a large pale spider, with legs so long
that it is often confounded with Phalangium, under the nickname of
"daddy longlegs." The body is quarter of an inch long, and the longest
legs two inches. The abdomen is about three times as long as wide and
nearly straight at the sides unless full of eggs. The cephalothorax is
nearly round and flat behind. Around the eyes the head is raised and in
the males separated at the sides from the rest of the head. The middle
pair of eyes are not higher than the tops of the lower lateral eyes. The
mandibles are nearly as high as the front of the head, and in the males
they have a small conical tooth near the base. The color is pale brown,
covered with fine gray hairs, and the whole body and legs are
translucent. The head is a little darker around the eyes, and there is a
large gray patch in the middle of the cephalothorax. The abdomen is
marked only by a translucent middle line over the dorsal vessel. This is
a house spider, common in America and Europe, and probably imported. It
lives in cellars where there is but little light and makes large, loose,
flat webs, horizontal where there is a convenient place, or irregular to
fit into surrounding objects (fig. 308). The spider hangs in the web
with the abdomen directed upward, and when alarmed swings itself around
rapidly so that it can hardly be seen. The egg cocoon is so thin that it
does not conceal the eggs and is carried about in the spider's mandibles
until the young hatch out.
[Illustration: FIGS. 309, 310, 311. Pholcus cornutus.--309, side of
female enlarged four times. 310, back of female. 311, front of mandibles
of male, showing the curved horns.]
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