The species of nightcrawler in the north-central region is Lumbricus terrestris. The length of adult nightcrawlers is usually 4 to 8 inches or more. Figure 1. The shallow-dwelling worms (known as ...
Vanderbilt University researcher Ken Catania told me that lactating females can eat up to 50 large Lumbricus earthworms – about 5 times their body weight – per day!). Even more astonishing was ...