How many legs does the giant orb spider have?
Do you think the spider shown in the photos is a male or female?
Look at the webs and notice how they are symmetrical. Do you think there is an ecological advantage to spinning a perfectly symmetrical web?
The scientists who discovered the giant orb spider have indicated that the species might be endangered. Why do you think the giant orb spider might be an endangered species?
- The silk that spiders produce when spinning webs is stronger than steel for its width. It is also very flexible, stretching up to 200 times its length.
- Orb spiders can weave webs that are up to one meter in diameter.
- Female giant orb spiders have a leg-span of up to 12 centimeters (4.7 inches, about the size of a CD). The males barely measure an inch. Males often ride on the backs of females.
- Giant orb spiders are only found in specific parts of Madagascar, South Africa, and South America.
- Although giant orb spiders are venomous, the venom only works on insects and cannot poison a human.
- The giant orb spider's scientific name is Nephila komaci.
Term Part of Speech Definition Encyclopedic Entry diameter Noun
width of a circle.
endangered species Noun
organism threatened with extinction.
Encyclopedic Entry: endangered species evolution Noun
change in heritable traits of a population over time.