Identifying Different Types of Crab Spiders

If you have a crab spider infestation, it is advisable to contact a professional exterminator to ensure that the removal is performed safely and effectively.

Crab spiders are a unique species of arachnids that have a distinctive appearance and behaviour. They are found all over the world, in a variety of different habitats. These spiders have a variety of different physical characteristics and behaviours that help distinguish them from other types of spiders. In this article, we will discuss the features and behaviours of the Thomisidae family of crab spiders, as well as how to identify them.

crab spider
crab spider

Overview of Crab Spiders

Crab spiders are a type of spider that belongs to the Thomisidae family. They are characterised by their flattened bodies and long legs. These spiders can range in size from a few millimetres to several centimetres in length. They are usually brown or yellow in colour, although some species may be brightly coloured.


Physical Characteristics of Crab Spiders

Crab spiders have several distinguishing physical characteristics that make them easy to identify. They have two large eyes that are positioned on the top of their heads. They also have a pair of small eyes that are located on the sides of their head. The legs of a crab spider are long and thin, and they have a flattened body.


Identifying the Thomisidae Family of Crab Spiders

The Thomisidae family of crab spiders includes several species of spiders that are found in a variety of different habitats. These spiders have several common features, including a flattened body, long legs, and two large eyes on the top of their head. Many species of crab spiders also have brightly coloured markings on their bodies.


Distinguishing Crab Spiders from Other Types of Spiders

There are several ways to distinguish crab spiders from other types of spiders. The most obvious is their physical appearance. Crab spiders have a flattened body and long legs, which sets them apart from other spiders. They also typically have two large eyes on the top of their head and two small eyes on the sides of their head.


Common Species of Crab Spiders

There are several different species of crab spiders found around the world. Some of the most common species include the Goldenrod Crab Spider, the Flower Crab Spider, and the European Crab Spider. Each species has its own unique features, such as size and coloration.


• Goldenrod Crab Spider: 

Found in meadows, grasslands and gardens, this species is yellow in colour and has a unique pattern of stripes on its abdomen. It is a small spider, measuring around 4 to 6mm in length.


• Flower Crab Spider: 

This species has a wide variety of coloration, ranging from white to yellow to brown. It is usually found on flowers and can change its colour to match its surroundings. It is around 4 to 8mm in length.


• European Crab Spider: 

This species is usually a light brown or beige colour, although it can vary in colour. It is usually found in gardens, woodlands, and meadows, and is around 3 to 8mm in length. It has a distinctive pattern of black spots on its abdomen.


Habitat of Crab Spiders

Crab spiders can be found in a variety of different habitats, including gardens, fields, meadows, and forests. They prefer to hide in places where they can easily ambush their prey. They are also commonly found on flowers, where they can blend in with the petals.


Behaviour of Crab Spiders

Crab spiders are ambush predators and will wait for their prey to come to them. They use their long legs to grab their prey and inject them with venom. They will also use their long legs to climb on plants and trees in order to get a better view of their surroundings.


Identification and Ecology of Crab Spiders in the UK: A Comprehensive Guide


Crab spiders are a fascinating group of spiders found throughout the world, including in the UK. As many as 25 species of crab spiders are known from the UK, including species from the families Thomisidae, Philodromidae, and Eresidae. This article will provide a comprehensive guide to the identification and ecology of these spiders.


Crab Spider: Identification

Crab spiders in the UK can be identified by their physical characteristics. They are typically small, measuring only a few millimetres in length. Have a flattened body and long legs that they use to move sideways like a crab. They vary in colour from white or yellow to brown or black. They typically have 8 eyes arranged in two rows of four.


The range of crab spiders in the UK is widespread, occurring in many habitats across the country. They are common in gardens, grasslands, meadows, and heaths.


Ecology of Crab Spiders in the UK


Crab spiders are primarily ground-dwelling predators, typically perching on plants or hiding under rocks or logs. They feed on a variety of prey, including small insects such as flies, bees, and moths. They are active during the day, typically hunting between late spring and early autumn.


The reproductive habits of crab spiders in the UK vary by species. Some species reproduce through internal fertilisation, while others reproduce through external fertilisation.


Conservation Considerations


The conservation of crab spiders in the UK is important, as many species are threatened by habitat loss and degradation. To conserve these spiders, it is important to protect their habitats and to reduce human activities that could impact the spiders’ populations.




This article has provided a comprehensive guide to the identification and ecology of crab spiders in the UK. By understanding the biology and ecology of these spiders, we can better protect them and ensure their conservation in the future.


Crab Spider Facts


  1. Crab spiders are a type of spider that gets its name from its crab-like appearance and behaviour.


  1. They can range in size from 1 to 12 mm and come in a variety of colours, including white, yellow, brown, and black.


  1. They are found all over the world, living in both hot and cold climates.


  1. Crab spiders are solitary hunters and ambush their prey, waiting to pounce when the opportunity arises.


  1. These spiders don’t spin webs, instead they lie in wait for their prey.


  1. They are known to be camouflage experts, taking on the color of the flower they reside in.


  1. Crab spiders have the ability to rotate their front legs outward, giving them an eerie crab-like appearance.


  1. Females are usually larger than males.


  1. They mostly feed on insects and other arthropods.


  1. Crab spiders can live up to two years.


Crab Spider Characteristics


These spiders are a type of arachnid that are usually small and have a flattened, wide body. Their short legs spread out in a crablike fashion, giving them their name.

They usually find themselves on flowering plants, displaying a variety of colors from white to yellow, brown to grey, and even black.


Unlike most spiders, crab spiders do not build webs, instead they actively hunt and feed on small insects or nectar from flowers. They have excellent camouflage abilities, as they can change their colour to match the flowers they inhabit. They also have long front legs which allow them to grasp prey easily.



Crab spiders mainly feed on insects and other arthropods, such as flies and bees.


Fun Fact: 

Camouflage experts, crab spiders take on the color of the flower they reside in.


Distinctive Feature: 

Crab spiders have the ability to rotate their front legs outward, giving them an eerie crab-like appearance.


Gestation Period: 

Female crab spiders take up to two weeks to lay their eggs and take care of them until they hatch.


Litter Size: 

Females usually lay around 50 eggs at a time.



Crabs spiders inhabit both hot and cold climates worldwide.



Crab spiders are preyed upon by predatory animals such as birds, lizards, and other spiders.


Crab spiders are solitary hunters and ambush their prey, waiting to pounce when the opportunity arises.

Residential Pest Control

If you discover or suspect a pest infestation in your home, you need to deal with it as soon as you can. Leaving an infestation to grow and allowing pests to establish themselves in your home will only make the issue more difficult and expensive to deal with. 

Bon Accord will gladly take on any residential pest control job in London, no matter how large or small. Whether you have discovered pests making your home their home, or you’re preparing to move into a new property that already has some unwelcome occupants, our pest control professionals are ready to help.

Commercial Pest Control

With more than 13 million people living in the Greater London area, it’s no surprise that so many pests also call this city home. Many business owners operating in London have to contend with pests at some point in their existence, even those who are very particular about keeping their premises clean.

Whether it’s bed bugs or an infestation of ants, there are a million and one potential pest problems that businesses in London might have to contend with. Pest problems can be alarming to both companies and their customers. Fortunately, pest control companies like Bon Accord commercial pest control are on hand to deal with any existing pest control issues you might have, as well as providing advice on how to prevent future outbreaks.

Spider Control – Spider Spray Killer

A completely spider-free environment isn’t a realistic goal for most people, but there are things you can do to minimise their presence. Even if you aren’t afraid of them, no one wants to deal with a pregnant spider giving birth in their home; some species will lay thousands of eggs at a time.

Despite what some newspapers and viral social media posts like to claim, there are no deadly spiders in the UK. There are a few that will bite people, but unless you suffer from a very rare allergic reaction, these bites aren’t dangerous. However, spiders can still be pests and cause numerous issues for property owners. If the number of spiders in your home is making you nervous, it’s time to do something about it. If you need to get rid of the spiders loon no more, we control spiders 24/7.

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20:26 20 Feb 24
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