Porrhothele Antipodiana Spider Facts and Habitat Overview

The Porrhothele antipodiana spider is a fascinating creature. It's a type of trapdoor spider.

These spiders are found in New Zealand, specifically in the North Island. They inhabit areas with moist soil and leaf litter. Their habitats often feature rocks, logs, and other hiding spots.

Porrhothele antipodiana spiders are nocturnal, meaning they're active at night. They're also solitary animals, only coming together for mating.

Porrhotele antipodiana is classified as a species of cave-dwelling spider.

Its classification is within the family Porrhothelidae, a group of spiders that are primarily found in New Zealand and Australia.

This classification is significant because it highlights the unique characteristics of Porrhotele antipodiana and its evolutionary history.

Taxonomy is a crucial part of the classification process, and it's what helps us group living things into categories based on their characteristics.

The Linnaean system, developed by Carolus Linnaeus, is a widely used taxonomy system that groups living organisms into seven levels: domain, kingdom, phylum, class, order, family, and species. This system helps us understand the relationships between different living things.

The domain level is the highest level of classification, and it's divided into three main categories: Archaea, Bacteria, and Eukarya. This level helps us distinguish between single-celled organisms and multi-celled organisms.

The kingdom level is the next level down, and it's divided into six main categories: Animalia, Plantae, Fungi, Protista, Chromista, and Monera. This level helps us group living things based on their cell structure and body organization.

The phylum level is where we start to see more specific characteristics, such as the number of limbs or the presence of a backbone. For example, the phylum Chordata includes animals with a backbone, while the phylum Arthropoda includes animals with jointed limbs.

The class level is where we group living things based on their body shape and structure. For example, the class Mammalia includes warm-blooded animals with hair and mammary glands.

The order level is where we group living things based on their evolutionary relationships. For example, the order Carnivora includes meat-eating mammals, while the order Primates includes mammals with a large brain and a similar body structure.

The family level is where we group living things based on their shared characteristics. For example, the family Canidae includes dogs, wolves, and foxes, while the family Felidae includes cats and lions.

The species level is the most specific level of classification, and it's used to identify individual species. For example, the species Canis lupus includes gray wolves, while the species Felis catus includes domestic cats.

Porrhothele (Walckenaer, 1837) is a genus of spiders that belongs to the family Hexathelidae.

The genus Porrhothele was first described by Walckenaer in 1837.

Porrhothele antipodiana, also known as the Tunnelweb Spider, is a large and bulky spider that is found in the lower North Island, the South Island, and the Chatham Islands.

This spider has a shiny dark funnel-web appearance, with a body length of 30 mm and a hairy grey/purplish abdomen.

The carapax of Porrhothele antipodiana is leathery and red/brown in color, and can sometimes be totally black.

These spiders live under logs and rocks in bush and gardens, or in other places where they can spin a tubular web tunnel.

The tunnel web is not sticky, and the spider uses vibrations to detect prey approaching the entrance.

Porrhothele antipodiana eats a wide variety of prey, including beetles, spiders, millipedes, slaters, moths, snails, bumble bees, and wasps.

In the case of wasps and bumble bees, the spider graps them from behind the thorax to avoid the sting.

The chelicerae of Porrhothele antipodiana are large and fang-like, and are used to stab prey multiple times to deliver venom.

Bites from Porrhothele antipodiana can be painful and may cause localized swelling, itching, or numbness, similar to a bee sting.

The venom of Porrhothele antipodiana is not dangerous to humans, but bites should be disinfected to reduce the risk of infection.

The Porrhothele antipodiana spider is a striking creature, with a carapace that's usually orange-brown in color, and darker shading near the eyes. Females have a larger body size than males, which can exceed 30 mm.

Males have a darker carapace than females, with dark reddish-brown legs and chelicerae. They also have clasping structures in the first pair of legs to hold females during copulation.

These spiders are masters of web-building, constructing long tunnel-shaped webs up to 25 cm long and 3-4 cm wide. They often spin their webs under logs and rocks, but will also set up shop in tree trunks, rock faces, and even urban structures.

The Porrhothele antipodiana spider is a fascinating creature. Its carapace is usually orange-brown coloured, with some darker shading near the eyes.

Females have a larger body size than males, and can exceed 30 mm in length. The abdomen is a uniform purple black colour and may have faint chevron patterns.

Males can be distinguished from females by the presence of clasping structures in the first pair of legs. These structures are used to hold females during copulation.

The spider's webs are non-sticky and long tunnel-shaped, often constructed under logs and rocks, but also in the trunks of trees, rock faces, and urban structures. Webs can be spun as quickly as within one hour.

The tunnels can be up to 25 cm long and 3-4 cm wide, with just a single opening where silk is widely spread out to catch and alert the spiders to the presence of prey.

Porrhothele antipodiana is found throughout both main islands of New Zealand, excluding the Northland region in the North Island.

This species is broadly distributed in the South Island, except for in the alpine zone. They can also be found in the Chatham Islands, but it's thought that this is a recent human-mediated introduction.

Porrhothele antipodiana occupies a variety of habitats, including forests, sand dunes, gardens, and hillsides with clusters of rocks. They're often found under old logs and rocks, and will also set up webs in cliffs and rock faces where possible.

The spiders typically lay their eggs in cocoons with two thin layers of silk, which are loosely packed together.

Porrhothele antipodiana has a unique relationship with mice in its native New Zealand habitat. In containers with mice, the spider assumes a defense threat posture when investigated.

Mice are known to attack Porrhothele antipodiana with quick, darting rushes, nipping at the spider's outstretched legs. The spider will strike back, but the mice generally avoid these strikes.

The spider's legs can be ripped off during these encounters, causing body fluid to spill out and ultimately leading to the spider's death. Mice will then eat the spider's abdomen and cephalothorax.

The conservation status of certain species is a vital aspect of conservation efforts.

In New Zealand, the conservation status of species is classified under the New Zealand Threat Classification System.

This system lists the species as "Not threatened", indicating a stable population and no immediate conservation concerns.

Porrhothele antipodiana is likely to be encountered by mice and other introduced mammals in its natural habitat, where it could be potential prey.

In containers with mice, P. antipodiana assumes a defense threat posture when investigated by the mice.

The mice attack the spider with quick, darting rushes, nipping at its outstretched legs.

The spider tries to strike back at the mice, but they generally avoid these strikes.

As this continues, the spider tires when pieces of its leg are ripped off, causing body fluid to spill out and ultimately leading to its death.

In some encounters, the spiders catch hold of the mouse and bite it, causing it to lose orientation, shiver, and ultimately die.

Mice that survive bites later avoid attacking these spiders.

Porrhothele antipodiana, the Black funnel web spider, can live up to 30 mm in body length.

These spiders are found in the lower North Island, South Island, and Chatham Islands, where they inhabit areas with logs and rocks in bush and gardens. They spin a tubular web tunnel, about 200 mm deep and 20-30 mm across, with a broad area of sheet web at the entrance for detecting prey.

The sheet web is not sticky, which means P. antipodiana has extra speed and hunting ability to ensure captures are made when prey enters its web. The spider's chelicerae (jaws) and palps serve to hold the prey for carrying it back to the tunnel.

Bites from Porrhothele antipodiana can be painful, causing localised swelling, itching, or numbness, similar to a bee sting. Cleaning and disinfecting the area can help reduce the risk of infection.

P. antipodiana eats almost anything that comes near its web, including beetles, spiders, millipedes, slaters, moths, snails, bumble bees, wasps, and even mice. They typically stab their prey with their chelicerae more than once to ensure deep penetration of the venom.

During the day, the spider hides inside its tunnel, and when it's dark, it comes out and waits at the entrance. The spider's large fangs and venom make their bites quite painful, but fortunately, there haven't been any reported fatalities from bites of Porrhothele antipodiana.

The Porrhothele antipodiana, also known as the tunnelweb spider, is a large spider with a distinctive appearance.

Its body is characterized by a dark abdomen and legs, with a leathery-looking cephalothorax that's typically red-brown in color, although it can be darker in some cases.

These spiders are often found in bush and gardens, and are common throughout much of New Zealand, including the Chathams, where they've been introduced.

You might spot them under logs and rocks, where they build a silken tunnel with a broad area at the entrance that alerts them to potential prey.

Their typical prey includes beetles and other ground-living insects, and they've even been known to capture snails and mice.

In the spring and summer, male tunnelwebs can cause alarm when they stray indoors, seeking out females for mating, often leading to shrivelled corpses in bathrooms and laundries.