Zodarion germanicum is a spider

Spider

Spiders are air-breathing arthropods that have eight legs, and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms...

 species of the Zodariidae family.

Like most Zodariidae, Z. germanicum is an ant

Ant

Ants are social insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from wasp-like ancestors in the mid-Cretaceous period between 110 and 130 million years ago and diversified after the rise of flowering plants. More than...

-eating spider. It resembles ants structurally and behaviorally. Z. germanicum specifically mimics large dark ants, such as Formica cinerea, F. truncorum, and Camponotus ligniperda.

Z. germanicum is up to 5 mm in size. Adults occur in Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

from June to August. Unlike many other zodariid spiders, it is active during the day.

If the spider encounters an ant, it retreats and stalks its prey from behind. The bitten ant will continue its walk for about a minute before the poison immobilizes it. Only now the spider will approach its prey and carries it to its hideout.