Anatomy Of A Spider

This jumping spiders main centre eyes are very close together. The anatomy of a spider is very interesting.

General Anatomy Of A Spider And Variation In Body Forms

The body of spiders is divided in two major parts.

Anatomy of a spider. Non complex sight organ of a spider. The bodies of spiders range in size from about 1 mm up to 9 cm. Even though there is plenty of variation when you look at the size and colors of spiders they all have general characteristics.

The abdomen is the posterior of the two body regions of a spider. Spider eyes and other senses. The anatomy of spiders includes many characteristics shared with other arachnids.

In spiders the first pair of appendages the chelicerae are like two segment fingers the outer segment being a hollow fang that injects venom virtually all spiders have poison glands though some are far more venomous than others. Even a relatively large spider can have fangs with very sharp points. These characteristics include bodies divided into two tagmata sections or segments eight jointed legs no wings or antennae the presence of chelicerae and pedipalps simple eyes and an exoskeleton which is periodically shed.

Prosoma contains head antenna and the legs. There are around 4000 species of spiders in australia and the diversity of species is truly incredible. Venom producing glandular organ of a spider.

These are the cephalothorax formed by a fusion of the head and thorax cephalon means headbrain and the abdomen. They are designed to help them move with ease and to conserve energy. They range from large stocky burrowers to petite colourful web builders to everything in between.

These are also called prosoma front body and opisthosoma rear body respectively. Seat of the mental capacities of a spider. All spiders have 8 legs 2 body parts cephalothorax and abdomen fang like chelicerae and antenna like pedipalps click on the terms below to learn more about each body part.

Arthropod animal with eight legs and an unsegmented body. Spiders have 8 legs. Unlike other insects the most populous type of arthropods spiders have bodies divided into two segments or tagmata singular.

While all have the basic features listed above it is not always easy to see or distinguish them. A spiders body is divided into two regions prosoma anterior part and ophisthosoma the posterior part. Non complex sight organ of a spider.

Internal anatomy of a spider. A beautiful image showing the internal anatomy of a spider. The smallest of full grown spiders can be less than 4 mm.

Sucking part of the digestive tract. At the front of the cephalothorax we find. Everything else is self explanatory.

This sets them apart from insects which have only 6 legs.

Spider Structure The Australian Museum