Phylum: Arthropoda Class: Arachnida
Most people will have some reaction to the mere mention of the word, ranging from simple interest to complete abhorrence. Yet these strange creatures play a most important role as predators of noxious insects. The vast majority of spiders are not dangerous to people, and help prevent the insect world from reaching plague proportions.
Arachnids, have 8 jointed legs (insects have 6), and their bodies are divided into 2 sections, the cephalothorax and the abdomen.
The cephalothorax is a fused head and thorax region. Palps are located in the front, and are larger in the male. The abdomen of the female is swollen. The male is generally smaller than the female. Many arachnids are nocturnal, are carnivorous, and are cannibalistic. Spiders render their prey immobile by injecting it with venom by means of their fangs. Production of silk or web is characteristic of spiders and is used for catching prey, holding egg cases, and dispersal of newly emerged spiderlings.
Spiders can be divided and classified into:
Primitive spiders (Mygalomorphs) - The Funnel web, the Trapdoor and the Mouse spider.
Modern spiders (Araneomorphs) -
*Can be open range hunters and ambushers: White tailed spider, Wolf spider and the Huntsman.
*They can be anglers such as the Net casting spiders.
*They can be apprentice weavers such as Red back, and Black house spider.
*Or Master weavers such as Orb weaver and Saint Andrews cross.
The venom of some arachnids is not necessarily poisonous to warm blooded animals. However, some are very toxic and potentially lethal.
Feel free to download our free Spider Identification chart for handy information.
Avoidance of Bites
1. Clear away undergrowth and backyard rubbish in the winter months.
2. Wear gloves and shoes when gardening.
3. Don’t leave clothes or children’s toys on the ground overnight, especially in summer when wandering spiders may use them as shelter.
4. Educate children that non aggressive spiders will not go out of their way to bite, but all have a venom to catch prey, and should be treated with care.
5. Be aware that male Funnel web spiders roam during the warmer months of January - March.
6. Take care when diving into backyard swimming pools as Funnel web spiders can remain alive underwater for a long time.
Austrapest’s environmentally responsible approach to spider Control
The key to our approach is that we use the safest products available which will control a specific pest problem. We use a range of Synthetic Pyrethroids - Permethrin & Deltamethrin.
"Blanket spraying" with toxic products for ground dwelling spiders is ineffective and environmentally incorrect. If there is a problem with ground dwelling spiders, Austrapest technicians identify the particular pest problem and can carry a treatment with direct contact of spiders and their nest sites.
Visit our office at Concord West for a better look at our samples of spiders and to have your spiders identified.