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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.
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 ...
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Micrathena, known as spiny orbweavers, is a genus of orb-weaver spiders first described by Carl Jakob Sundevall in 1833. [5] [6] Micrathena contains more than a hundred species, most of them Neotropical woodland-dwelling species. The name is derived from the Greek "micro", meaning "small", and the goddess Athena. [7]
Orb-weaver spiders are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields, and forests. The English word "orb" can mean "circular", [1] hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulating organs.
The female of the species is characterized by having a highly sclerotized "spiny" abdomen, which is a common feature of the genus. Females also have varying numbers of sigillae in both dorsal and ventral abdominal surfaces. Males are somewhat smaller than females and with lesser coloration and abdominal spines. [3]
Gasteracantha kuhli is a species of spiny orb-weaver spider in the genus Gasteracantha, widespread from India to Japan, the Philippines, and Java in Indonesia. [1] It is known as the black-and-white spiny spider. [2]
The webs are more or less permanent, unlike many other orb weaver spiders which regularly destroy and rebuild their webs every day. [7] [30] Females do not make retreats near their webs. Instead they rest in the centre of the web with their head downwards. [16] Males are usually found on nearby vegetation. [32]