Occurrence: Larinioides cornutus is common mostly in wetland habitats. It is a rare species in the Czech republic. They can form colonies. Description: Their flattened abdomen is light with dark marking. There is a possible confusion with Larinioides suspicax (O. Pickard-Cambridge, 1876), which is more abundant in the Czech Republic. Determination depends on the shape and configuration of the sexual organs. Adult females can grow to about 12 mm. Period of occurrence: The juvenilles are common in autumn and spring. The adults are common from May to July. Web: Larinioides cornutus builds its web to about 1 meter above the ground. The web is usually strong and the spider responds to a prey soon. Signal thread is sometimes not significant and is connected with a nest from twisted leaves or a grass spikelet. On sunny days these spiders often sit on a central area. Food: They hunt smaller flies and butterflies.