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Dor Beetle

Dor Beetle Facts

Size 0.6-1 in (16-25 mm)
Speed Unknown
Weight Unknown
Lifespan 2-3 years
Food Dung
Predators Birds, snakes
Habitat Europe, North Africa
Order Beetles
Suborder Polyphaga
Family Geotrupidae
Scientific name Geotrupes stercorarius
Characteristics Dot-shaped indentations at the sides

Main Characteristics

There are about 150 species of dung beetles, 59 of them are living in Europe. They prefer forests, fields and steppes, are diurnal and nocturnal and can fly. Yet, the little chubby chaps are moving about rather clumsily.

Origin

Where Does the Scientific Name Come From?

The scientific term for the common dor beetle is Geotrupes stercorarius. Geotrupes stands for „earth driller“ (Geo = earth; trupes = drill). Stercorarius indicates „the one that cleans out“.

Behavior

What Do Dor Beetles Eat?

They like to eat what we want to get rid of as quickly as possible: feces. Dung (feces from herbivores), to put it more exactly. In most cases it is not completely digested and, in addition to grass eaten by horses, cows, rabbits, etc., contains a liquid with the little organisms the beetles like so much. The common dor beetle particularly appreciates cow and horse dung. It mostly spends its evenings flying about in the proximity of those animals and waiting for some food to “fall down”. Some dor beetles also feed on fungi or humus.

Dor Beetles Exclusively Feed on Fresh Dung

Time is Dung. After some time, the “delicious” liquid inside the dung dries up. This is why dor beetles only eat fresh and moist dung.

Dor Beetle Dor Beetle - Photo: Gucio_55/Shutterstock

Reproduction

Dor beetle males and females mate in spring and then dig burrows with tunnels and chambers into the ground. When everything is ready and the chambers are filled with dung balls (yummy!), the female beetle lays one egg in the chamber before it is filled with even more dung and sealed with clay afterwards. After one year, the little larvae are fully grown and pupate.

Dor Beetles Take Care for Their Brood

In contrast to mammals, insects are not particularly known for taking care of their offspring. Dor beetles are among the few exceptions. Male and female beetles even stay together to ensure that their kids have a good start into life.

Dor Beetles Team Up

Males and females form excellent teams: While the female beetle is mostly responsible for digging tunnels underground and preparing everything for the deposition of eggs, the male has to transport the earth out of the burrow.

Dor Beetle Dor Beetle - Photo: Andrew Buckin/Shutterstock

Importance for the Ecosystem

Because the dor beetles store the dung underground, they provide the soil with nutrients and thus help to make it more fertile.

Dor Beetle Dor Beetle - Photo: LuciaP/Shutterstock

Fun Faccts

Dor Beetles Play Taxi Driver for Mites

In English-speaking regions the dor beetle is also called the “lousy watchman”. Small goldish yellow mites often cling to its underparts like stowaways. Scientists have several theories about this: Some think the mites are parasites feeding on the beetle’s body fluids. Others reckon that the mites use the dor beetle as a taxi to move from dry feces to new and fresh feces.

Dor Beetle Dor Beetle - Photo: MeisterS/Shutterstock

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