SPIDERS No. 48 - Lower Abdomen of a Cribellate Spiderling

Images made through a microscope. All subject types.

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Walter Piorkowski
Posts: 693
Joined: Mon Aug 14, 2006 6:42 pm
Location: South Beloit, Ill

SPIDERS No. 48 - Lower Abdomen of a Cribellate Spiderling

Post by Walter Piorkowski »

Image

Leitz Ortholux microscope
4X Leitz projection eyepiece plus 1/3x relay lens

171 images at 2.5 micron increments. Nikon 10x Achromat
Live subject.

Diffused Fiber Optic illumination
Canon 50D
Zerene PMax and Photoshop processing.


What we have here is the underbelly of a spiderling that is of the Cribellate type. As detailed in Spiders No. 40, the cribellate spiders have a silk producing organ other than the spinnerets called a cerebellum. It is flat or plate like in SEM images and is located I believe in the clear zone just above center on this young spider. The large number of hairs that normally obscure it are not yet developed.

This image is of a live subject resting in its web. Some of which can be seen in the image.

Walt

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