What is a White Tail Spider in Auckland?
A white tail spider in Auckland is a venomous, wandering spider characterized by its dark grey or black body and a distinct white spot at the tip of its abdomen. They are common household pests in New Zealand that hunt other spiders and can deliver a painful bite.
Origins and Habitat of the White Tail Spider
The white tail spider is not originally native to New Zealand, having been accidentally introduced from Australia in the late 19th century. Since their arrival, they have successfully established themselves across the country, particularly thriving in the temperate and humid climate of Auckland. These arachnids belong to the Lamponidae family, with two primary species found in New Zealand: Lampona cylindrata and Lampona murina. Both species share similar physical traits and behavioral patterns, making them indistinguishable to the untrained eye.
Unlike many other common household spiders, white tails do not spin webs to catch their prey. Instead, they are active, nocturnal hunters that wander in search of food during the night. Their primary diet consists entirely of other spiders, with the common grey house spider being one of their favorite meals. Because of this specific diet, white tail spiders are naturally drawn to areas where other spiders have already established their webs.
In their natural outdoor environment, these spiders are typically found hiding beneath the loose bark of trees, under rocks, or within deep layers of leaf litter. However, the urban environment of Auckland provides them with an abundance of artificial habitats that perfectly mimic their natural preferences. As the weather cools down during autumn, or during periods of heavy rain, they frequently migrate indoors to seek shelter and warmth. Once inside, they prefer dark, undisturbed areas that provide adequate cover during daylight hours.
White tail spiders frequently hide in piles of clothing left on the floor, between bed sheets, inside shoes, and behind curtains. Always shake out clothing and footwear before putting them on to avoid accidental bites.
Understanding their habitat preferences is crucial for effective pest management in your home. Because they are transient hunters, you will rarely find a white tail spider in the exact same spot two days in a row. They constantly roam through wall voids, roof cavities, and sub-floor areas looking for their next meal. This wandering nature is exactly why they so often come into accidental contact with humans, leading to unexpected bites.
How to Identify a White Tail Spider?
Accurate identification is the first step in managing any potential pest threat in your home. A white tail spider is relatively easy to distinguish from other common New Zealand arachnids once you know what specific features to look for. Adult white tails typically measure between 12 to 18 millimeters in body length, with females generally being slightly larger and more robust than the males. Including their leg span, they can appear quite intimidating, often reaching the size of a fifty-cent coin.
The most distinctive feature, and the source of their common name, is the prominent, pale-white or cream-colored spot located at the very tip of their abdomen. The overall body shape is uniquely elongated and cylindrical, often described as resembling a cigar. Their body coloration ranges from dark grey to a deep, reddish-black, and they possess a slightly glossy or leathery appearance on their cephalothorax (the front section of the body).
Juvenile white tail spiders look slightly different from fully mature adults, which can sometimes cause confusion. Young spiders often have striped or banded legs, and they may display two pairs of faint white spots along their abdomen in addition to the prominent white tip. As the spider matures and molts, these extra spots and leg bands gradually fade away, leaving the solid dark body and single white tip characteristic of the adult.
- Body Shape: Distinctly elongated and cylindrical, resembling a cigar.