0
irisheyes

Strange Looking Spider

Recommended Posts

I've seen a few of these threads on dz.com in the past and know you guys can be pretty good at identifying strange creatures. So, can any of you tell me what this is?

It is about the size of a nickel and the black part at the bottom is the head (I think). It looks more like a tiny crab to me than a spider, but, it has spun a web. I think there may actually be two of them living in the same web.

I've googled all sorts of descriptions. Maybe it is just that my googling skills are not up to par, but, I just can't seem to figure it out!

Share this post


Link to post
Share on other sites
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes)
Family Araneidae (Orb Weavers)
Genus Gasteracantha
Species cancriformis (Spinybacked Orbweaver)
Other Common Names
Crab Spider, Spiny Orbweaver Spider, Crab-like Orbweaver Spider, Crab-like Spiny Orbweaver Spider, Jewel Spider, Spiny-bellied Orbweaver, Jewel Box Spider, Smiley Face Spider, Crablike Spiny Orbweaver.
Synonyms and other taxonomic changes
G. elipsoides
Identification
This species can be easily distinguished from all other spiders. Females may be 5 to nearly 9 mm in length, but 10 to 13 mm wide. They have six pointed abdominal projections frequently referred to as "spines." The carapace, legs, and venter are black, with some white spots on the underside of the abdomen. The dorsum of the abdomen is, typically for Florida specimens, white with black spots and red spines. Specimens from other areas may have the abdominal dorsum yellow instead of white, may have black spines instead of red, or may be almost entirely black dorsally and ventrally.



Males are much smaller than females, 2 to 3 mm long, and slightly longer than wide. Color is similar to the female, except the abdomen is gray with white spots. The large abdominal spines are lacking, although there are four or five posterior small humps (Levi 1978, Muma 1971).
Range
It is found across the southern part of the United States from California to Florida, as well as in Central America, Jamaica, and Cuba. (Levi, 1978)
Habitat
It lives in woodland edges and shrubby gardens. Many of the studies on this spider have taken place in citrus groves in Florida. They frequently live in trees or around trees in shrubs. (Levi, 1978)
Season
Most common in the fall
Life Cycle
This species of spider does not live very long. In fact, the lifespan only lasts until reproduction, which usually takes place the spring following the winter when they hatched. Females die after producing an egg mass, and males die six days after a complete cycle of sperm induction to the female.
Remarks
This spider adds little tufts of silk to its web. According to Florida's Fabulous Spiders(1) "these little flags serve a warning function to prevent birds from flying into the web, destroying it."
Play stupid games, win stupid prizes!



Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

0