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The World Spider Catalog, V7.0 by N. I. Platnick © 2000 — 2006 AMNH (10681 words) |
 | A revision of the Neotropical spider genus Ancylometes Bertkau (Araneae: Pisauridae). |
| Tanikawa, A. Japanses spider of the genus Zygiella (Araneae: Araneidae). |
| Spiders of the genus Zodarion (Aranei: Zodariidae) in the fauna of the Crimea. |
| BIGpedia - Spider - Encyclopedia and Dictionary Online (2932 words) |
| Spiders have eight legs compared to the insects' six, and their eyes (usually eight) are single lenses rather than compound eyes like those of most insects. |
| The spider's respiratory anatomy is based on a tracheal system, with each opening to the trachea as an extension of an outer pore reaching from the spider abdomen, protected by spiracles which are pores in the spider exoskeleton, composed of chitin. |
| Spiders often use elaborate mating rituals (especially in the visually advanced jumping spiders) to allow the male to approach close enough to inseminate the female without triggering a predatory response. |
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