redback

spider
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Share
Share to social media
URL
https://mainten.top/animal/redback
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

Also known as: Latrodectus hasselti
Related Topics:
black widow
venom

redback, (Latrodectus hasselti), species of comb-footed spider (family Theridiidae) that is native to Australia, the females of which are venomous and distinguished by an orange or red stripe on the back of the abdomen.

The body colour of males and females typically is brownish or black, and both sexes have a reddish orange marking in the shape of an hourglass on the lower side of the abdomen. Males often have white markings on the upper side of the abdomen. They further differ in appearance from females in size, measuring about 3 to 4 mm (0.12 to 0.16 inch) in body length, compared with 1 cm (0.4 inch) in females. Males also are shorter-lived, surviving several months to the females’ two or three years. During mating, the male somersaults into the fangs of the female, which in the majority of instances results in the female’s cannibalizing the male.

Humans bitten by female redbacks may experience localized pain, swelling, and sweating. Systemic symptoms include nausea, vomiting, restlessness, and increased blood pressure; in severe cases, respiratory failure may occur. In many instances, severe reactions may be prevented through the administration of antivenom.

Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Britannica Quiz
Animal Group Names
Kara Rogers