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
$Misumena aleatoria.$--The female of this species grows nearly as large
as _vatia_, and in some places is much more common. It is white or
yellow, but does not have the crimson markings at the sides of the
abdomen or between the eyes. The head (fig. 79) is rounder than in
_vatia_ and much lower in front, and there is a narrow white stripe
under the eyes that divides at the sides, one branch passing around over
the mandibles and the other close under the eyes. The sides of the
cephalothorax are gray or green. The abdomen usually has no markings
except a little gray color in the middle, but sometimes it has two rows
of dark brown spots (fig. 81), and in such individuals the legs are also
marked with brown at the ends of the joints. The males are very small
and strikingly colored (fig. 82). The two front pairs of legs are brown,
the cephalothorax green, and the abdomen yellow. The shape of the head
and the white under the eyes are the same as in the female.
[Illustration: FIGS. 83, 84. Misumena asperata.--83, female enlarged
four times. 84, male enlarged four times.]
$Misumena asperata.$--The males and females of this spider are more
alike than in _vatia_ and _aleatoria_. The adult females are always pale
and sometimes white, but seldom lose entirely the reddish bands around
the legs. Both sexes are covered with short stiff hairs about their
length apart all over the upper part of the body and legs. The usual
color is pale yellow, with dull red markings. The thorax is reddish at
the sides. The abdomen has two red bands or rows of spots on the hinder
half, meeting behind. In front are a middle pair of spots and two side
bands that spread apart in the middle and meet again at the spinnerets.
The tibia and tarsus of the front legs are marked with a narrow red ring
at the base and a wider ring near the end of each joint. The female is a
quarter of an inch long and the male about half that length. The
markings of the male are like those of the female, but the spots are
larger and more deeply colored. The male palpi are larger than in the
other species.
The male _M. spinosa_ of Georgia resembles _asperata_, but the legs are
much longer and the ends of the palpi smaller.
[Illustration: FIGS. 85, 86. Synema parvula.--Enlarged eight times. 85,
upper side. 86, under side.]
Public-domain text, read in full here on John Shaqi.
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