Salticus scenicus  (SALTICIDAE)

This small jumping spider can often be seen on the walls of buildings. It is 5-7 mm in length and can be recognised by its hairy body with black and white stripes on it (for which reason it is sometimes referred to as the "zebra spider"). In the Salticidae the eight eyes are distributed around the carapace in a single row, unlike those of most other species. Prey is normally first detected by the lateral eyes, and the spider will then jump round to face the prey and localise its position using its large frontal eyes. The eyesight of the Salticidae is among the best of any spider. The adult males have enlarged, projecting chelicerae, which are used to spar with other competing males.These can just be made out in the photo, which is of an adult male.

Head and chelicerae of a male Salticus scenicus. The chelicerae of the males are significantly larger than those of the females. The pedipalps are clearly visible as well. For comparison, here are the head and chelicerae of a female Salticus scenicus. Left Pedipalp (male sexual organ) of Salticus scenicus

Epigyne (female sexual organ) of Salticus scenicus Tarsal claw of Salticus scenicus. Note the soft hairs (scopula) underneath the claw. Close-up of a scopula of Salticus scenicus