Occurrence: Zilla diodia is common in the forests, in the parks or in the gardens. It is a very abundant species. Description: Its round abdomen has a pearly luster and typical marking. Adult female can grow to about 4,5 mm long. Period of occurrence: Juveniles are seen from August, adults are seen from May to July. Web: Zilla diodia builds its small, dense and less strong web to about 2 meters above the ground. The spider responds to a prey soon. Most of the time it is sitting on the central area. It doesn't make signal thread and nest. Food: Its food is small flying insects.