The septoid, or Ja Field septoid, was a seven-legged insect indigenous to Eriadu. Septoids were fearless pests that survived centuries of attempts to exterminate them, only to adapt and thrive once more. Their exposure to the Eriaduan global pollution only seemed to make them hardier and more numerous, hence the Eriaduan expression 'tough as a septoid.' Its central thorax contained its head, fangs, and eyestalks. Its seven legs, made of serrated chitin and coming to a sharp point at the foot, radiated outward from the thorax. Fortunately, septoids were non-poisonous.
The WED-15 droid series was named and somewhat patterned after the septoid.