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Araneidae
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", hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulating organs. The family has a cosmopolitan distribution, including many well-known large or brightly colored garden spiders. With 3,108 species in 186 genera worldwide, the Araneidae comprise one of the largest family of spiders (with the Salticidae and Linyphiidae). Araneid webs are constructed in a stereotypical fashion, where a framework of nonsticky silk is built up before the spider adds a final spiral of silk covered in sticky droplets. Orb webs are also produced by members of other spider families. The long-jawed orb weavers ( Tetragnathidae) were formerly included in the Araneidae; they are closely related, being part of the superfamily Araneo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneidae Web
Orb-weaver spiders are members of the spider family (biology), family Araneidae. They are the most common group of builders of spiral wheel-shaped spider web, webs often found in gardens, fields, and forests. The English word "orb" can mean "circular", hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulation, stridulating organs. The family has a cosmopolitan distribution, including many well-known large or brightly colored garden spiders. With 3,108 species in 186 genus, genera worldwide, the Araneidae comprise one of the largest family of spiders (with the Salticidae and Linyphiidae). Araneid webs are constructed in a stereotypical fashion, where a framework of nonsticky spider silk, silk is built up before the spider adds a final spiral of silk covered in sticky droplets. Spider web#Orb web construction, Orb webs are also produced by members of other spider families. The long-jawed orb weavers (Tetragnathidae) were formerl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriophora Sp 2
''Eriophora'' is a genus of orb-weaver spiders first described by Eugène Simon in 1895. These spiders are found in tropical climates in the Americas, Africa, and Asia. The name is derived from Ancient Greek roots and means "wool bearing". Description As is common in orb-weaving spiders, species in the ''Eriophora'' genus feature a third claw used to weave their webs. While most tend to spin a balanced and symmetrical web of small to medium size, ''E. fuliginea'' has been seen to craft a large, asymmetrical web that may be 1.6 - 3m in diameter with an open "hub" in the top third of the web. Females are typically larger than males, and have a very long epigyne scape. Males in the genus generally have an enlarged tibia of the second leg. These spiders feature a variety of colors and patterns, the most notable being the bright green abdomens that are sometimes present in ''E. nephiloides'' and, less frequently, ''E. ravilla''. The abdominal dorsum may may have a pattern of whit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneoidea
Araneoidea is a taxon of Araneomorphae, araneomorph spiders, termed "araneoids", treated as a Family (biology), superfamily. As with many such groups, its Circumscription (taxonomy), circumscription has varied; in particular some families that had at one time been moved to the Palpimanoidea have more recently been restored to Araneoidea. A 2014 treatment includes 18 families, with the araneoids making up about 26% of the total number of known spider species; a 2016 treatment includes essentially the same taxa, but now divided into 17 families. Taxonomy Many of the differences in circumscription concern the relationship between Araneoidea and Palpimanoidea. In 1984, Raymond Robert Forster, Raymond R. Forster and Norman I. Platnick proposed that some groups previously considered araneoid actually belonged in the distantly related Palpimanoidea, including the families Holarchaeidae, Micropholcommatidae, Mimetidae and Pararchaeidae. Subsequent phylogenetic studies have rejected this p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argiope Catenulata
''Argiope catenulata'', also known as the grass cross spider, is a species of orb-weaver spider (family Araneidae) ranging from India to the Philippines and Papua New Guinea, and also found in Australia in 2019. Like other species of the same genus, it builds a web with a zig-zag stabilimentum. Description ''Argiope catenulata'' is a colorful spider. The female's cephalothorax is yellow with black eye margins. Its abdomen is oblong with a black and silvery-whitish yellow dorsal pattern. Brown patches of irregular shapes are present from the median of the opisthosoma (abdomen) to the posterior side. The legs are black with thin white rings. The male is smaller than the female. It has a brownish red to yellowish brown cephalothorax with black eye margins. Its abdomen is yellowish with a dorsal pattern as in the female. The legs are yellowish brown. Ecology ''Argiope catenulata'' are web builders, the circular webs have zigzag webbing known as white stabilimenta A stabilimentu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider
Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and rank seventh in total species diversity among all Order (biology), orders of organisms. Spiders are found worldwide on every continent except Antarctica, and have become established in nearly every land habitat. , 53,034 spider species in 136 Family (biology), families have been recorded by Taxonomy (biology), taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomy, Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segmentation (biology), segments are fused into two Tagma (biology), tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider Web
A spider web, spiderweb, spider's web, or cobweb (from the archaic word ''Wikt:coppe, coppe'', meaning 'spider') is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally meant to catch its prey. Spider webs have existed for at least 100 million years, as witnessed in a rare find of Early Cretaceous amber from Sussex, in southern England. Many spiders build webs specifically to trap and catch insects to eat. However, not all spiders catch their prey in webs, and some do not build webs at all. The term "spider web" is typically used to refer to a web that is apparently still in use (i.e., clean), whereas "cobweb" refers to a seemingly abandoned (i.e., dusty) web. However, the word "cobweb" is also used by biologists to describe the tangled three-dimensional web of some spiders of the family Theridiidae. While this large family is known as the cobweb spiders, they actually have a huge range of web architectures; other names for thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetragnathidae
Long-jawed orb weavers or long jawed spiders (Tetragnathidae) are a family of araneomorph spiders first described by Anton Menge in 1866. They have elongated bodies, legs, and chelicerae, and build small orb webs with an open hub with few, wide-set radii and spirals with no signal line or retreat. Some species are often found in long vegetation near water. Systematics , the World Spider Catalog accepts the following extant genera: *'' Allende'' Álvarez-Padilla, 2007 — Chile, Argentina *'' Antillognatha'' Bryant, 1945 — Hispaniola *'' Atelidea'' Simon, 1895 — Sri Lanka *'' Azilia'' Keyserling, 1881 — United States, Panama, South America, Caribbean *'' Chrysometa'' Simon, 1894 — South America, Central America, Mexico, Caribbean *'' Cyrtognatha'' Keyserling, 1881 — South America, Central America, Caribbean, Mexico *'' Dianleucauge'' Song & Zhu, 1994 — China *'' Diphya'' Nicolet, 1849 — Asia, South America, Africa *'' Dolichognatha'' O. Pickard-Cambridge, 1869 � ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salticidae
Jumping spiders are a group of spiders that constitute the family (biology), family Salticidae. , this family contained over 600 species description, described genus, genera and over 6,000 described species, making it the largest family of spiderscomprising 13% of spider species. Jumping spiders have some of the best visual perception, vision among arthropods — being capable of stereoptic color vision — and use sight in courtship, hunting, and navigation. Although they normally move unobtrusively and fairly slowly, most species are capable of very agile jumps, notably when hunting, but sometimes in response to sudden threats or crossing long gaps. Both their book lungs and Invertebrate trachea, tracheal system are well-developed, and they use both systems (bimodal breathing). Jumping spiders are generally recognized by their eye pattern. All jumping spiders have four pairs of eyes, with the Anatomical terms of location, anterior median pair (the two front middle eyes) being pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider Silk
Spider silk is a protein fibre or silk spun by spiders. Spiders use silk to make webs or other structures that function as adhesive traps to catch prey, to entangle and restrain prey before biting, to transmit tactile information, or as nests or cocoons to protect their offspring. They can use the silk to suspend themselves from height, to float through the air, or to glide away from predators. Most spiders vary the thickness and adhesiveness of their silk according to its use. In some cases, spiders may use silk as a food source. While methods have been developed to collect silk from a spider by force, gathering silk from many spiders is more difficult than from silk-spinning organisms such as silkworms. All spiders produce silk, although some spiders do not make webs. Silk is tied to courtship and mating. Silk produced by females provides a transmission channel for male vibratory courtship signals, while webs and draglines provide a substrate for female sex pheromone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
