Category: Arachnida Spider
Facts about Golden Trapdoor Spiders, "Scientific name for Golden Trapdoor Spider is Arbanitis sp". The Golden Trapdoor Spider is an Australian native. Golden Trapdoor spiders have the species name Euoplos, and they are part of family Idiopidae. Golden trapdoor spiders are about one to one and a half inches long (2.5 to 3.8 cm).
Golden Trapdoor Spider primarily lives in southwestern Australia. The Golden Trapdoor Spiders are not just named for their color, They build trap doors to protect their burrows.
The Golden Trapdoor Spider live in silk lined burrows in the ground and they tend to live in creek bottoms. The Golden Trapdoor Spider can plug the doors to their burrows and live in them for weeks in cases of seasonal flooding. Their burrows are ten to twenty inches (25.4 to 50.8 cm) deep in the mud and half an inch (1.3 cm) across, just wide enough for the Golden Trapdoor Spider to turn around. The burrows have a mud plug that also helps protect it from predators like the spider wasp.
The Golden Trapdoor Spider has an orange-brown head, orange legs and a brown body.
There are three species of Golden Trapdoor Spider in southwestern Australia, though they are indistinguishable in appearance to a casual observer. Males have long thin legs. Most species have C shaped spines on the male’s first legs to prevent him from being bitten, much less eaten, but the female.
Their burrows can be distinguished from those of the Cataxia species because Cataxia make burrows that resemble half-moons instead of full moons. However, Cataxia species act more like brown tube spiders.
Golden Trapdoor Spiders do not have a skeletons. They have a hard outer shell called an exoskeleton-(a rigid external covering for the body in some invertebrate animals). The exoskeleton is hard, so it can’t grow with the spider. The young Golden Trapdoor Spiders need to shed their exoskeleton. The Golden Trapdoor Spider has to climb out of the old shell through the cephalothorax. Once out, they must spread themselves out before the new exoskeleton will harden. Know they have some room to grow. They stop growing once they fill this shell. Female spiders are usually bigger than males.
Female Golden Trapdoor Spiders lay eggs on a bed of silk, which she creates right after mating. Once the female spider lays her eggs, she will than cover them with more silk.
The Golden Trapdoor Spiders prefer to hunt at night and they try to wait for prey to approach their burrows instead of hunting for it. They prey on snails, crickets, moths, beetles and grasshoppers and other small insects. They are more likely to come out after a rain because this is when other insects that they prey on emerge.
The females will regurgitate food to feed their young after they hatch from the egg sack.
The Golden Trapdoor Spiders are not poisonous. They will rise to a defensive position and show their fangs if disturbed.
Spiders belong to a group of animals called "arachnids", mites and Scorpions and a tick is also in the arachnid family. An Arachnids is a creature with eight legs, two body parts, no antennae or wings and are not able to chew on food. Spiders are not insects because insects have three main body parts and six legs and most insects have wings.
The Arachnids are even in a larger group of animals called "arthropods" an invertebrate animal of the large phylum Arthropoda, which also include spiders, crustaceans and insects. They are the largest group in the animal world, about 80% of all animals come from this group. There are over a million different species. There are more than 40,000 different types of spiders in the world.
Golden Trapdoor Spiders have oversize brains.
In the Golden Trapdoor Spider the oxygen is bound to "hemocyanin" a copper-based protein that turns their blood blue, a molecule that contains copper rather than iron. Iron-based hemoglobin in red blood cells turns the blood red
A male Golden Trapdoor Spider has two appendages called "pedipalps" a sensory organ, instead of a penis, which is filled with sperm and insert by the male into the female Golden Trapdoor Spider’s reproductive opening.
Golden Trapdoor Spiders have two body parts, the front part of the body is called the Cephalothorax-(the thorax and fused head of spiders). Also on this part of the body is the Golden Trapdoor Spider’s gland that makes the poison and the stomach, fangs, mouth, legs, eyes and brain. Golden Trapdoor Spiders also have these tiny little leg-type things called (pedipalps) that are next to the fangs. They are used to hold food while the spider bites it. The next part of the Golden Trapdoor Spiders body is the abdomen and the abdomens back end is where there is the spinnerets and where the silk producing glands are located.
The muscles in a Golden Trapdoor Spiders legs pull them inward, but the spider can't extend its legs outward. It will pump a watery liquid into its legs that pushes them out. A Golden Trapdoor Spider’s legs and body are covered with lots of hair and these hairs are water-repellent, which trap a thin layer of air around the body so the Golden Trapdoor Spiders body doesn't get wet. It allows them to float, this is how some spiders can survive under water for hours. A Golden Trapdoor Spider feels its prey with chemo sensitive hairs on its legs and than feels if the prey is edible. The leg hair picks up smells and vibrations from the air. There are at minimum, two small claws that are at the end of the legs. Each Golden Trapdoor Spiders leg has six joints, giving the spider 48 leg joints. The Golden Trapdoor Spider’s body has oil on it, so the spider doesn't stick to it’s own web.
A Golden Trapdoor Spiders stomach can only take liquids, so a Golden Trapdoor Spider needs to liquefy their food before they eat. They bite on their prey and empty its stomach liquids into the pray which turns it into a soup for them to drink.