What Spiders Feed On Plants? Plant-Eating Spiders, Food, And Diet

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There are many different types of spiders in the world, and each one has its own unique diet. Some spiders eat insects, while others eat other small animals. There are also spiders that eat plants. But what spiders feed on plants?

Plant-eating spiders can be found all over the world. They usually live in areas where there is a lot of vegetation, such as forests and jungles. Plant-eating spiders typically eat insects, but they will also eat plant matter if it is available.

You’ve got that right, so keep reading to learn more about Plant-Eating Spiders, Food, and Diet.

What do spiders eat?

Spiders are generally carnivores predators and eat a variety of different insects. They are known to feed on mosquitoes, common house flies, bedbugs, cockroaches, and moths.

What Spiders Feed On Plants

In addition, spiders consume a variety of other prey. They eat small lizards, frogs, and even other spiders.

Interestingly, to capture their prey, most spiders rely on their webs. The web spun by a spider is very durable. When you touch it, the silky material sticks to your skin.

A bug or other prey gets entangled in the web as the spider sits in the middle of it, waiting for a meal. The bug is bitten by the spider, which injects poison into it.

What do spiders eat other than bugs?

Spiders are mainly carnivores, and they eat a variety of insects, including flies, mosquitoes, and caterpillars. However, there are certain varieties of spiders that consume nectar from flowers. This helps them to survive in areas where there are not many other insects to eat.

Furthermore, these spiders are considered omnivores because they eat both plant and animal material.

Let us discover more about these spiders in the next section.

What Spiders Feed On Plants? Discover the plant-eating spiders

Spiders eating plants is not a common occurrence, but it does happen. According to a recent study, there are a variety of spiders that feed on plants, including members of both web-building spiders and jumping spiders.

The majority of plant-eating spiders are found in the tropics, where they feed on plant products in addition to their main diet of insects.

In fact, the study surprisingly found that spiders from these different families were eating nectar, sap, honeydew, leaves, pollen, and seeds from things like weeds, shrubs, trees, grasses, ferns, and orchids.

Some common species found foraging on Plants include:

Bagheera kiplingi

Bagheera kiplingi species

The species Bagheera kiplingi is known to be almost entirely herbivorous, making the feeding habits a most intriguing case! This discovery was made when researchers analyzed the isotopic signatures of the spider’s tissues- an indicator of what an animal eats.

It was found that while Bagheera kiplingi does occasionally eat insects, their tissue composition is typical of herbivorous animals, implying that plants make up the majority of their diet.

Bagheera kiplingi, belonging to the jumping spider family, is generally found in Central America and southern Mexico.

They inhabit the Mimosaceae family of trees, specifically Vachellia collinsii. These trees are known for their specialized protein- and fat-rich nubs called Beltian bodies, which are the nutrient-rich structures located at the tips of plant shoots.

However, these spiders also consume nectar and occasionally steal ant larvae for food.

Interestingly, the degree of vegetarianism in different populations of B. kiplingi spiders also varies. In Mexico, where the spider is most common, it inhabits more than 50% of Vachellia collinsii trees and feeds almost exclusively on an herbivorous diet.

However, in Costa Rica- where the spider is less common- its population inhabits less than 5% of Acacia trees, and their diet is less herbivorous.

That said, did you know that the name of this spider is as fascinating as its feeding habits? The moniker was designated to these critters in honor of Rudyard Kipling’s imaginary black panther from The Jungle Book!!

Anelosimus rupununi

Adult Male Cobweb Spider of the Family Theridiidae

Anelosimus rupununi is a social spider found in the rainforest of Guyana. These spiders are important for the study of sociality and its evolution in spiders.

These spiders, again belonging to the jumping siders clan, are found occasionally feeding on the sap of mango leaves but have also been known to feed on other types of plants.

Myrmarachne foenisex and Myrmarachne melanotarsa

Ant mimic spider , Myrmarachne species, Satara, Maharashtra, India

As you now know, spiders are not just predators that feed on other animals; many of them also feed on plants. In fact, there are a few species of spiders that specialize in feeding on plant-eating insects such as aphids.

Two such examples are the Myrmarachne foenisex and Myrmarachne melanotarsa; these spiders consume the honeydew that the aphids secrete and use it as their main food source.

They also “milk” honeydew from insects called coccids, which excrete the sweet liquid from their anus.

A Spiders new balanced diet

Arachnologists have recently discovered that a number of spiders are plant-eaters and that this may be one of several mechanisms helping spiders to stay alive during periods when insect prey is scarce.

Thereby it can be said that these critters have developed a new balanced diet!

Besides deriving nutrients from their primary food source (insects and other animals), spiders feed on plants to get the essential ingredients of a nutritious diet.

Basically, the spiders who eat plants supplement their food habits with the proteins, lipids, minerals, and vitamins present in the plant tissues. This helps them maintain a healthy and balanced diet.


As you may be aware, science and life itself are reservoirs for tremendous opportunities. Consequently, biological evolution, such as the discovery of spiders that supplement their carnivorous diets with plant and plant products, is surprising but not inevitable.

Having said that, I hope this article was useful in answering your questions about Discover the Plant-Eating Spiders, Food, and Diet!

About the author

A biotechnologist by profession and a passionate pest researcher. I have been one of those people who used to run away from cockroaches and rats due to their pesky features, but then we all get that turn in life when we have to face something.