Wolf Spider
A wolf spiders skeleton, like most species in the phylum arthropoda have an exoskeletons which are made of cuticle, a non-cellular material secreted by the epidermis. Their cuticles vary in the details of their structure, but generally consist of three main layers.
The epicuticle, a thin outer waxy coat that moisture-proofs the other layers and gives them some protection
The exocuticle, which consists of chitin and chemically hardened proteins
The endocuticle, which consists of chitin and unhardened proteins.
The epicuticle, a thin outer waxy coat that moisture-proofs the other layers and gives them some protection
The exocuticle, which consists of chitin and chemically hardened proteins
The endocuticle, which consists of chitin and unhardened proteins.
The wolf spiders are also known to feed on dead arthropods gathering, web silk, and their own shed exoskeletons. Pollen caught in webs may also be eaten.
Movement
Each of their eight legs consists of seven distinct parts. The part closest to and attaching the leg to the cephalothorax is the coxa.
The next segment is the short trochanter that works as a hinge for the following long segment, the femur.
Next is the spider's knee, the patella, which acts as the hinge for the tibia.
The metatarsus is next, and it connects the tibia to the tarsus, the spider's foot.
The tarsus ends in a claw made up of either two or three points.
Spiders use hydraulic pressure to extend their muscles in their legs.
The only extensor muscles in spider legs are located in the three hip joints. As a result the spider with a punctured cephalothorax cannot extend its legs, and the legs of dead spiders curl up. Spiders can generate pressures up to eight times their resting level to extend their legs.
The next segment is the short trochanter that works as a hinge for the following long segment, the femur.
Next is the spider's knee, the patella, which acts as the hinge for the tibia.
The metatarsus is next, and it connects the tibia to the tarsus, the spider's foot.
The tarsus ends in a claw made up of either two or three points.
Spiders use hydraulic pressure to extend their muscles in their legs.
The only extensor muscles in spider legs are located in the three hip joints. As a result the spider with a punctured cephalothorax cannot extend its legs, and the legs of dead spiders curl up. Spiders can generate pressures up to eight times their resting level to extend their legs.