Wall spiders: observe these hunting neighbours

Flat, fast-moving spiders on walls can be surprising visitors. Learning to recognise common hunting spiders can reduce unnecessary spraying and make the home garden a better place for a range of small predators.

Use a regional identification reference

The African Snakebite Institute places common wall spiders in the family Selenopidae. Compare the whole animal and its body shape with the reference, but do not force a species identification from a blurred photograph. Other spiders may also rest on walls.

Observe without handling

1. Take a photograph from a comfortable distance, including an object that gives scale without touching the spider.
2. Note where it rests and whether it is hunting insects.
3. Leave an undisturbed spider alone where it causes no practical problem.
4. If removal is necessary, seek help from someone comfortable with safe, non-contact relocation. Do not handle an unidentified spider.

Think about the wider habitat

A spider is one part of the garden food web, not a guaranteed solution to an infestation. Avoid routine spraying of walls, cracks and vegetation simply because spiders are present. Repair screens and manage unwanted indoor insects if they are drawing many hunters into the house. Keep work areas orderly so people do not need to reach blindly into dark spaces.

Share useful observations

A clear photograph, approximate locality and observation are more useful than a claim that all similar spiders are safe or dangerous. Do not diagnose a skin lesion from the fact that a spider was seen nearby. A suspected bite with concerning symptoms needs medical advice; the wiki’s role here is identification and coexistence.

Namibian climate and microclimate

Warm walls, lights attracting insects and sheltered cracks create small habitats even in dry towns. Irrigated gardens may support more prey than the surrounding landscape. Observe your own setting rather than expecting the same abundance everywhere.