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
$Epeira gibberosa.$--A small and light-colored species living among
grass and in bushes in open fields. The adult female is from a sixth to
a quarter of an inch long, and the male smaller. The cephalothorax and
legs are light greenish yellow, and the abdomen gray, or light yellow
covered with lighter spots and black and yellow markings (fig. 411).
The abdomen is marked with two parallel lines on the hinder half and
three smaller black spots in front, the latter often absent. The
parallel lines are sometimes broken up into rows of spots, and these may
form part of several transverse black and yellow marks. The
cephalothorax has a narrow black line in the middle from the dorsal
groove nearly to the eyes. The feet are black toward the claws, and the
spines of the legs are long and black. The first and second femora have
a longitudinal black line on the under side. The abdomen is oval, half
longer than wide. The cephalothorax is high in the middle and slopes
forward toward the eyes almost as steeply as backward (fig. 412). The
web (fig. 413) is horizontal or inclined, with a round well-defined
central portion, in the middle of which is sometimes a round opaque
screen that nearly covers the spider. In the finished web there is
usually no trace of the temporary spiral, but sometimes, as in the
figure, a little of it is left, showing how it starts abruptly from the
closer spirals that form the center of the web. The outer spirals are
very fine and close together and the number of rays unusually large,
sometimes as many as sixty.
[Illustration: FIG. 413. Web of Epeira gibberosa, showing the round
center of the inner spiral, the great number of rays, and the closeness
of the spirals. Torn in several places by use. Half the real size.]
[Illustration: FIG. 414. Epeira placida, enlarged eight times.]
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account