Coin Spider from Manglayang Mt.

,
by
Mohamad Idham Iskandar

Coin Spider from Manglayang Mt.


Kingdom:Animalia
Phylum:Arthropoda
Class:Arachnida
Order:Araneae
Suborder:Araneomorphae
Family:Nephilidae
Genus:Herennia
Species:H. etruscilla

Herennia Etruscilla aka. coin spider is an endemic to java, and I get lucky to met this one. I get the exact id from karl from whatsthatbug.com, here is what karl say about the identification:

Hi Daniel and Mohamad:This beautiful spider is a Golden Orb Weaver in the family Nephilidae (formerly grouped under the Araneidae and Tetragnathidae). The genus is Herennia, and it has an Australasian distribution (India to the Solomon Islands). This is a very small genus with only 11 known species, usually referred to as Coin Spiders, most of which have been described only within the last decade. The island of Java apparently has two species; H. multipuncta is widespread throughout South and Southeast Asia and H. etruscilla is endemic to Java. There are several online images of H. multipuncta and they don’t match the one in this post. The definitive paper on the genus is “A Revision of Herennia (Araneae: Nephilidae: Nephilinae), the Australasian ‘coin spiders’ “ by Kuntner (2005), in which both the detailed descriptions and photos of H. etruscilla provide a very good match to Mohamad’s spider. The unique webs are referred to as ladder webs and if you are interested in learning more you can check out another paper by Kuntner et al. (2009) [see: 9fcfd50cb81b07c8ae]. These spiders also exhibit some interesting sexual behavior. They demonstrate extreme sexual dimorphism, not unusual among spiders, but once engaged in copulation the males stay put, acting as a genital plug that prevents other males from fertilizing the female. In addition to Coin Spiders, common names also include Ornamental Step Ladder Spiders and Ornamental Tree Trunk Spiders. Thanks Mohamad, for a very interesting submission. Regards. Karlp.s. Daniel, my computer seems to have difficulty with hyperlinks to pdf files. Let me know if the links to the Kuntner papers don’t work and I can send you the full addresses. Karl

The magnificent thing... it is true from what karl say about the "ladder web", it is just like a ladder on a pine tree  from bottom to top. I don't know why the spider built these kind of webs but simply majestic!.
Here's some photo of those beautiful creatures.


H. etruscilla at night


H. etruscilla at daylight

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Hersillia from Manglayang Mountain

,
by
Mohamad Idham Iskandar

Hersillia from Manglayang Mountain


Kingdom:Animalia
Phylum:Arthropoda
Class:Arachnida
Order:Araneae
Suborder:Araneomorphae
Family:Hersiliidae
Genus:Hersilia


A strange looking spider, it has two tail on the end of its abdomen. After later I could identify this one, it's Hersillia Spider (a Two tailed bark-rock spider). The tail also scientifically known as spinnerets is used for spinning it's web.

In Manglayang Mountain I encountered a lot of them, they live on rocks, barks, and wood walls. One more interesting fact from my observation; when I found a female, there will be a male not far from there.


Female Hersillia


Male Hersillia


Female Hersillia Up Close

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Molting Striped Lynx Spider from Manglayang Mountain

,
by
Mohamad Idham Iskandar

Molting Striped Lynx Spider from Manglayang Mountain


Kingdom:Animalia
Phylum:Arthropoda
Class:Arachnida
Order:Araneae
Family:Oxyopidae
Genus:Oxyopes
Species:O. salticus

February, 22 2013.
It was a wonderful experience for me to see molting process of striped lynx spider.
It took more than an hour to complete the molting process. At first I thought that this guy is sleeping upside down, because it's keep ignoring me even if I try to get so close. So I carefully set up my camera and tripod near it, and started the observation.

hmm..., hanging upside down while spinning. I keep my camera on and after a while, wow...it started to stretched down and shed it's skin slowly started from the head part followed by the mandible, abdomen, legs and boom a shinny new spider suit.

So here it is guys a collation of a molting process of a striped lynx spider.


Molting striped lynx spider.

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Lost My Jpeg Images

,
by
Mohamad Idham Iskandar

Lost My Jpeg Images

February 2013,

A bad thing happens, I lost almost all of my jpeg Image Collections from my computer that I took from 2010-2013 using my wonderful Canon Ixus 100is . 

I don't know when it was actually  happens, but when I notice it; all the images mostly gone from my folders. It was to late to try to recover the images because there was a lot of read and write activity doing in my computer drives.

Yes...I felt sad and anger at the same time, but you  know guys... it won't stop me to take the pictures again. Now started from 2013 I took my pictures using my Canon G12 raw, and backup those images more than one place.

:)
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