African Nightcrawlers - Eudrilus Euginae

What Are African Nightcrawlers?

African Nightcrawlers, scientifically known as "Eudrilus Euginae" are a species of earthworm, and are one of the very few earthworm species that can be used for vermicomposting. They are the largest, and the most voracious of all the composting worms.

They are native to Africa (who would've guessed?) but have been introduced to the United States, so getting your hands on these guys as an American is not too difficult.

Are African Nightcrawlers Invasive?

African Nightcrawlers are a tropical species, so they don't stand a chance surviving anywhere that has some form of winter weather. Besides that it would be hard for them to establish in most of the U.S. due to the weather, they also would need favorable conditions for them (which don't happen all that often in nature), and likely don't pose threat to the ecosystem so wouldn't qualify as an "invasive" species. You can read more about composting worms & invasive species here.

 

Identification and Anatomy of African Nightcrawler

African Nightcrawlers are easily identified from other composting worms by a few tell-tale signs;

1) ANCs are quite large. Other composting worms don't reach the same size.

2) ANCs have a uniform purple/brown color without stripes or banding.

3) Their clitellum is much closer to their head than red wigglers or european nightcrawlers.

Here is a medium sized African Nightcrawler (left) next to a large red wiggler (right). Note the color difference, and the placement of the clitellum on the African nightcrawler is closer towards its "head."

I may be the only person to think like this, but when I see a Red Wiggler, I think it's clitellum makes it look like it's wearing a shirt. But with the clitellum higher up, the African Nightcrawler looks like it's wearing a turtle neck.

When you've worked with worms as long as I have you get a little crazy, my apologies!

African Nightcrawler next to a Red Wiggler for Identification
 

African Nightcrawler Size

African Nightcrawler's size can be mindblowing to anyone who has mostly been working with red wigglers. When stretched out, they can be over a foot long.

It is more common to see adult ANCs in the 4-8 inch range though.

Here is one of the biggest ANCs I have grown on my arm. What a big boy! 

African Nightcrawler Size Visualized
 

Lifespan and Reproduction of ANC

African Nightcrawler Life Cycle Visualized

Life-cycle of the African nightcrawler, Eudrilus eugeniae (Oligochaeta)

AJ Viljoen, Sophie A. & Reinecke - African Zoology, 1989 - journals.co.za
 

Caring for African Nightcrawlers: The Key Differences

Temperature Requirements

The major "drawback" of using African Nightcrawlers is their temperature requirements.

Being a tropical worm, they are adapted for warm weather. 75°F to 85°F is their optimal range.

Temperatures below 60°F can harm their productivity, and temperatures below 50°F for prolonged amounts of time can be dangerous for them.

So if you live in a non-tropical climate, African nightcrawlers may not be the best option unless you can keep them warm and toasty all year round.

 

Bin Depth Requirements

Since African Nightcrawlers have a lot more muscle to them, they are able to burrow deeper and easier than red wigglers. You can best accommodate them by housing them in a bin that's at least a full foot deep.

FAQ about CFTs

 

Feed Requirements

Being fed routinely is important for ANCs. My experience is that they will definitely get "hangry."

They are also less forgiving of whacky conditions in the bin - so avoiding mistakes like overfeeding or overwatering that could get your bin out of balance is a higher priority than with red wigglers.

They seem to also have an affinity for some higher carbon foods, such as cardboard and leaves.

So if you're looking to vermicompost to deal with all the cardboard amazon boxes you get, these guys could be a good pick!

 

How Fast do African Nightcrawlers Eat and Produce Worm Castings?

In ideal conditions, African Nightcrawlers are said to eat (and poop) about 3x faster than Red Wigglers. This should be comparable to the ANCs eating their own weight and a half in food daily.

 

Buying African Nightcrawlers

Hungry Worms is happy to be offering African Nightcrawlers on our website! Shipped free and guaranteed live. Click on the link below to check them out!

 
Scott Kent, Owner of Hungry Worms

Scott Kent

Owner of Hungry Worms. Worm farmer, soil microbiologist, and educator since 2014. Read more about me here.

Back to blog

Leave a comment