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Hippasa holmerae


Hippasa holmerae
Photo Information
Copyright: Ardika Septyawan (Septle2) (175)
Genre: Animals
Medium: Color
Date Taken: 2014-05-21
Categories: Insects
Exposure: f/inf, 1/100 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2014-05-26 9:02
Viewed: 1731
Points: 12
[Note Guidelines] Photographer's Note
The American grass spiders are members of the genus Agelenopsis. They weave sheet webs that have a funnel shelter on one edge. The web is not sticky, but these spiders make up for that shortcoming by running very rapidly. The larger specimens (depending on species) can get up to approximately 19 mm in body length. They may be recognized by the arrangement of their eight eyes into three rows. The top row has two eyes, the middle row has four eyes, and the bottom row has two eyes (spaced wider than the ones on the top row). They also have two prominent hind spinnerets, and somewhat indistinct bands on their legs. They also have two dark bands running down either side of the cephalothorax.

Agelenopsis aperta, the American funnel-web spider, produces agatoxins. Their bite causes rapid paralysis in insect prey, although the spider's Chelicerae are too small to penetrate human skin.

The genus name is a combination of Agelena (Eurasian grass spiders) a genus of similar spiders, and Greek -opsis "to look like". They are harmless spiders. Although most spiders use their webs to catch prey, the grass spider's web lacks adhesive ability. The spiders make up for that with their fast running.

The main distinction between Agelenopsis and its European cousin genus Agelena consists of the pattern appearing on the cephalothorax: the former possess two quasi-parallel lines from the eyes to the beginning of the abdomen. The latter ones have lines that are curved, irregular and often meet at the end. Another difference is the length of the front legs row in females, however, in males the comparison is too inconsiderable.


This spider build its sheet web that have a funnel shelter on one edge on the ground just like American grass spiders (genus of Agelenopsis) or Eurasian grass spiders (genus of Agelena) do. The body size of this spider is about 7mm.

Taxonomy:
Phylum : Arthropoda - Arthropods
Class : Arachnida - Arachnids
Order : Araneae - Spiders
Infraorder : Araneomorphae - True Spiders
No Taxon : Entelegynes
Family : Lycosidae - Wolf Spiders
Genus : Hippasa
Species : H. holmerae
Scientific name : Hippasa holmerae (Thorell , 1895)


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Critiques [Translate]

great shot Ardika
good details and great sharpness with lovely colours
thansk greeting lou

amazing closeup, TFS Ori

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2014-05-26 15:50]

Hi Ardika,the perspective of this pic is absolutely fantastic!! What a original way to take this spider,great detail and a magnificent 3D effect,i like it! Have a nice day and thanks,Luciano

This is one of the most graphic shots of a Spider inside its funnel shaped web, Ardika. Superb clarity, details and colours.
Thanks.
Ram

FANTASTIC IMAGE........

Hello Ardika,
Mise au point et profondeur de champ sont parfaites. Image de belle composition r徼ssie sur tous les plans.
Bravo et TFS.
Daniel.

Hi Ardika
照的很漂亮 很美麗的蜘蛛 也很清晰
這個景緻很特別 照的很棒
構圖也很美麗 真是好看
謝謝分享
STONE

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