|
Araneomorphae Genera
The Araneomorphae (also called the Labidognatha or "true spiders") are an infraorder of spiders. They are distinguishable by chelicerae (fangs) that point diagonally forward and cross in a pinching action, in contrast to the Mygalomorphae (tarantulas and their close kin), where they point straight down. Araneomorphs comprise the vast majority (about 93%) of living spiders. Distinguishing characteristics Most spider species are Araneomorphae, which have fangs that face towards each other, increasing the orientations that they can employ during prey-capture. They have fewer book lungs (when present) – usually one pair – and the females typically live one year. The Mygalomorphae have fangs that face towards the ground, and which are parallel to the long axis of the spider's body, thus they have only one orientation they can employ during prey capture. They have two pairs of book lungs, and the females often live many years. Image:Cheiracanthium punctorium frei 1 17 Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephila Inaurata
''Trichonephila inaurata'', Synonym (taxonomy), synonym ''Nephila inaurata'', commonly known as the red-legged golden orb-weaver spider or red-legged nephila, is a species of spider of the genus ''Trichonephila''. It is native to southern Africa, southern and East Africa, as well as several islands of the western Indian Ocean (Madagascar, the Seychelles, Réunion, Mauritius, Rodrigues). Web spinning and structure ''Trichonephila'' spiders produce large asymmetric orb webs up to in diameter. ''Trichonephila'' species remain in their webs permanently, so have a higher predation risk. The golden silk orb-weaver is named for the yellow color of the spider silk used to construct these webs. Yellow threads of their web shine like gold in sunlight. Carotenoids are the main contributors to this yellow color, but xanthurenic acid, two quinones, and an unknown compound may also aid in the color. Experimental evidence suggests that the silk's color may serve a dual purpose: sunlit webs ens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
