. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 118.— Wasp, with head, 119.— Spider, showing cH- 120.— Lower side of cephalo- thorax and abdo- men separated. vision of the body into cephalothorax and abdomen. thorax of a spider; md, mandible; mx, maxilla; \i, jxUpus; ], loiter lip; s, sternum. of which the poison gland opens (Fig. 120). The second pair of jaws are known as the maxilla. These are situated just beliind the madibles, one on each side of the mouth. Each maxilla bears a large feeler or j)a
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 118.— Wasp, with head, 119.— Spider, showing cH- 120.— Lower side of cephalo- thorax and abdo- men separated. vision of the body into cephalothorax and abdomen. thorax of a spider; md, mandible; mx, maxilla; \i, jxUpus; ], loiter lip; s, sternum. of which the poison gland opens (Fig. 120). The second pair of jaws are known as the maxilla. These are situated just beliind the madibles, one on each side of the mouth. Each maxilla bears a large feeler or j)alj)us. These palpi vary greatly in form ; fre- quently, especially in females, they resemble legs; hence many spiders appear to have five pairs of legs. In the male spiders the last segment of the palpus is more or less enlarged, ending in a complicated knob-like structure (Fig. 121). It is thus easy to determine the sex of a spider by merely exam- ining the palpi. The greater number of spiders have four pairs of eyes (Fig. 122), but there may be only one, two, or three 132.—ifm^Z of , ^ . T spider, shoic- iMirs; and certam cave spiders are . , J^ ' i mg eyes and blind. The eyes appear like little mandibles. gems set in the front of the cephalothorax. They are most promi- nent in the jumping spiders, which stalk their prey on plants^ ^^8'^> fences, and tlie sides of 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 Cornell University. Agricultural Experiment Station. Ithaca, N. Y. : The University
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