| 词条 | Plebs eburnus |
| 释义 |
| name = Plebs eburnus | image = Female Plebs eburnus.jpeg | image_caption = Female P.eburnus on web. | regnum = Animalia | phylum = Arthropoda | classis = Arachnida | ordo = Araneae | subordo = Araneomorphae | familia = Araneidae | genus = Plebs | species = P. eburnus | binomial = Plebs eburnus | binomial_authority = Keyserling, 1886 [1] | synonyms =
}} The spider species Plebs eburnus is commonly referred to as the Eastern Grass Orb-weaver or the Eastern Bush Orb-weaver, and sometimes more simply the Bush Orb-weaver. It is an orb-weaver spider from the Araneidae family, it is endemic to Australia. It was previously classified as a member of the genus Araneus but has been reclassified in 2012 [2] into a newly described genus Plebs.[3] It is closely related to the Western Bush Orb-weaver, P. cyphoxis. It is a very common spider with distinctive white markings (although these marking can be quite variable), which give it the species name eburnus pertaining to ivory. It is found in scrub and tall grasses where the female constructs a vertical web usually no more than 2 metres from the ground, and stays there day and night. The web of some of these spiders has been seen to be decorated with nearly vertical stabilimentum (like a clockface at 5 minutes to 5 or its mirror image).[4] The stabilimentum of P.cyphoxis is usually observed vertical (like a clockface at 6 o'clock).[5] DistributionP. eburnus can be found in Queensland, New South Wales, Victoria, Tasmania, Australian Capital Territory and South Australia. Some rare occurrences have been observed in Western Australia although this is not part of the typical range of this species.[6] The ranges of this species and P. cyphoxis overlap in South Australia.[3]Size and markingsOn the underside of the abdomen, along with other members of the Plebs genus, there is a characteristic U-shaped white marking with two white spots either side of the spinnerets.[3] The females, as with most spiders, are larger than the males and are around 8mm in length, compared to just 5mm in length for the males. References1. ^{{cite journal|last1=Keyserling|first1=Eugen von|date=1886|title=Die Arachnidens Australiens|journal=Nürnburg|volume=2|pages=87–152}} {{Taxonbar|from=Q1842867}}2. ^{{cite web|title=Plebs eburnus|url=http://www.wsc.nmbe.ch/species/5137/Plebs_eburnus|website=World Spider Catalog|accessdate=2015-04-07}} 3. ^1 2 3 4 5 6 7 8 9 10 11 12 {{cite journal|last1=Joseph|first1=Mathew M.|last2=Framenau|first2=Volker W.|title=Systematic review of a new orb-weaving spider genus (Araneae: Araneidae), with special reference to the Australasian-Pacific and South-East Asian fauna|journal=Zoological Journal of the Linnean Society|date=2012|volume=166|pages=279–341|doi=10.1111/j.1096-3642.2012.00845.x}} 4. ^{{cite web|title=Plebs eburnus|url=http://www.arachne.org.au/01_cms/details.asp?ID=1567|website=Arachne.org.au|accessdate= 2015-04-07}} 5. ^{{cite web|title=Plebs cyphoxis|url=http://www.arachne.org.au/01_cms/details.asp?ID=2431|website=Arachne.org.au|accessdate=2015-04-07}} 6. ^{{cite web|title=Araneus eburnus|url=http://bie.ala.org.au/species/Araneus+eburnus#|website=Atlas of Living Australia|accessdate=2015-04-07}} 3 : Araneidae|Spiders of Australia|Spiders described in 1886 |
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