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Gasteracantha is a genus of orb-weaver spiders first named by Carl Jakob Sundevall in 1833. [2] Species of the genus are known as spiny-backed orb-weavers, spiny orb-weavers, or spiny spiders. The females of most species are brightly colored with six prominent spines on their broad, hardened, shell-like abdomens.
Most species are macropterous (having long wings), but a few brachypterous (short-winged) and apterous (no wings) species are known. [3] Spider wasps are best distinguished from other vespoid wasps in having (in most species) a transverse groove bisecting the mesopleuron (the mesepisternal sclerite, a region on the side of middle segment of the ...
Gasteracantha cancriformis [2] (spinybacked orbweaver) is a species of orb-weaver spider (family Araneidae). It is widely distributed in the New World. [1]The genus name Gasteracantha derives from the Greek words γαστήρ (gaster, "belly") and ἄκανθα (acantha, "thorn"), while the specific epithet cancriformis derives from the Latin words cancer ("crab") and forma ("shape, form ...
“The majority of the spiders cause us no harm and are predators of pests,” says entomologist Roberto M. Pereira, Ph.D., an insect research scientist with the University of Florida. Translation ...
Female black-and-white spiny spiders are 6–9 millimeters wide and possess hard, shiny abdomens armed with six black conical spines. The upper surface of the abdomen is white to yellowish with variable black or dark brown markings and sigilla. The central part of the abdomen's dorsal surface is usually marked with a dark cross-like shape.
The spiny orb-weaving spiders in the genera Gasteracantha and Micrathena look like plant seeds or thorns hanging in their orb-webs. Some species of Gasteracantha have very long, horn-like spines protruding from their abdomens. One feature of the webs of some orb-weavers is the stabilimentum, a crisscross band of silk through the center of the web.
Gastericantha fornicata is a member of the family Araneidae, also known as the orb-weaver spiders. Spiders within this group all build circular, "orb" shaped webs. A diverse range of spiders within this family have been shown to adorn their webs with decorations like Gasteracantha fornicata (seventy-eight species across twenty -two genera). [10]
Gasteracantha versicolor, known as the long-winged kite spider, [citation needed] is a species of diurnal spiny orb-weaver of the family Araneidae. It is found in the tropics and sub-tropics, where it occurs in forests. It has an extensive range, from central, east and southern Africa to Madagascar.