Fear of Spider Runners: Useful Hunters or Dangerous Pests?

Fear of Spider Runners: Useful Hunters or Dangerous Pests?

In recent weeks there has been an increase in sightings of spider runners, also known as Scutigera coleoptrata, in Heilbronn. These centipedes, up to 15 cm long, are best known for their pest-fighting properties. They feed on a variety of insects such as spiders, flies and silverfish. Despite their size and a possible bite that is described as painful, these animals are not dangerous to humans. According to echo24.de, the bites are usually less painful than a wasp sting and rarely lead to serious reactions.

Spider runners are found worldwide and prefer moist environments. During the day they hide in cracks, under stones or in basements. Their reproductive period extends from April to June, during which time females lay up to 60 eggs in suitable hiding places. These nocturnal animals reach speeds of up to 1.5 km/h, making them agile in their hunt for their prey. While they are mostly harmless to humans, they can cause unwanted redness and swelling upon direct contact, which usually goes away on its own (erasio.de).

Distribution and way of life

The spider runners were originally introduced to Germany from the Mediterranean region and are now widespread in several federal states, particularly in Baden-Württemberg, Rhineland-Palatinate and Hesse. They are often found in large cities such as Stuttgart, Karlsruhe and Frankfurt. Despite the growing population in various regions, their occurrence in Heilbronn can be assessed as moderate. As a rule, they do not represent a serious pest, but are actively used in viticulture to combat other harmful insects.

To avoid a buildup of spider runners in living spaces, experts recommend various measures. This includes reducing the humidity by ventilating regularly and using dehumidifiers if necessary. In addition, accesses such as leaky windows and doors should be sealed. Direct control can also be carried out using insect sprays or the use of sticky traps. The lifespan of a spider runner is around three years, during which time they are solitary and avoid large amounts of human contact.

Prevention and management

The Leibniz Institute for the Analysis of Biodiversity Change (LIB) recommends using spider walker discovery reports to support scientific analyses. Despite their occasionally unpleasant presence, these animals are ultimately useful allies in the fight against unwanted insects. However, experts warn of the increase in bed bugs in the region, which are often brought in from hotels as travel souvenirs. Preventive measures are also of great importance here in order to counteract a possible infestation (echo24.de).