Cyclosa bifida
Cyclosa bifida

Female 6.5mm
17-8-2015 TINAGAT

Cyclosa bifida
Cyclosa bifida

Female 7mm
9-8-2009 BUKIT GEMOK
 
Cyclosa bifida
Cyclosa bifida

Female 7.5mm
19-7-2009 Bukit Gemok
 
MALE UNKNOWN  

Cyclosa bifida
Long-Bellied Cyclosa Spider


Cyclosa bifida

Cyclosa bifida
Long-Bellied Cyclosa Spider

Female 6.5mm
17-8-2015 MON TINAGAT BEACH

Cyclosa bifida



This Cyclosa species has a bright orange-yellow abdomen with black and white. An orb-web spider. Its bright colours of the species make it distinctive. The female is much larger than the male.

The web of a mature female can reach half a meter in width.

The  cylindrical abdomen of Cyclosa spiders can be easily recognised by the characteristic U-shaped demarcation between the raised "head" (the cephalic part of the cephalothorax) and the flat thoracic region.

The last pair of legs are well armed with strong spines.

This genus also makes a marking in its web like the Argiope but instead of a cross it makes a circular marking.

The small elongated species of Cyclosa, usually about 6 mm long, have conical humps at the front of the abdomen. Through the center of the snares, furnished with many radii and closely set spirals, often lies a stabilimentum consisting largely of the remains of insects and debris tied together with silk.


Spiders of the genus Cyclosa decorate their vertical orb-webs with a band of rubbish made of remains of insects bound in silk. The spider sits in the hub and appears to be a part of the debris, thereby camouflaging itself. The vertical orb-web is decorated by a vertical band of debris through the centre.

Description
This Cyclosa species has a bright orange-yellow abdomen with black and white markings. Like all Cyclosa species, it has a three-lobed abdomen. It makes a small circular orb web in low shrub. The centre of the web has loops or spiral of coarse silk. The spider sits at the centre of the web and is easily mistaken for dead flowers or debris in the web.

Size
female: 9 mm. male: 5 mm

Habitat
low shrubs

Food
small insects that are trapped in the web

Notes
This spider is not aggressive and probably too small to be harmful to humans



Spiders of the genus Cyclosa decorate their vertical orb-webs with a band of rubbish made of remains of insects bound in silk. The spider sits in the hub and appears to be a part of the debris, thereby camouflaging itself. The vertical orb-web is decorated by a vertical band of debris through the centre.

 

dragline silk: Used for the web's outer rim and spokes, as well as for the lifeline. As strong as steel, but much tougher.
capture-spiral silk: Used for the capturing lines of the web. Sticky, extremely stretchy and tough.
tubiliform silk: Used for protective egg sacs. Stiffest silk.
aciniform silk: Used to wrap and secure freshly captured prey. Two to three times as tough as the other silks, including dragline.
minor-ampullate silk: Used for temporary scaffolding during web construction
 


Spiders of Sabah  August 19, 2015 11:36:13 PM

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