Zodariidae

Thorell, 1881

Ant-eating Spiders, Ant Spiders

Zodariidae, commonly known as -eating , is a of small to -sized eight-eyed spiders found worldwide in tropical to warm temperate regions. The family comprises approximately 90 and 1,249 , with the highest diversity in Australia. Members are predominantly ground-dwelling, free-living that do not construct webs for capture. Many species exhibit specialized ant-eating habits and , disguising themselves as ants to hunt their primary prey. The family has relatively few species in North America compared to other regions.

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Pronunciation

How to pronounce Zodariidae: /zoʊˈdɛəriˌaɪdiː/

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Habitat

Ground-dwelling; free-living. Many occupy terrestrial including woodland, Jarrah forest, sand plain vegetation, and montane forest. Some , such as Asceua, exhibit -dwelling , which is unusual for this . Members of the genus Zodarion construct igloo-shaped stone retreats attached to the underside of rocks or dead wood for daytime shelter.

Distribution

All continents except Antarctica. Highest in Australia. Significant representation in Europe, Asia, and North Africa, with at least 35 reported from the Iberian Peninsula alone. Present in the Afrotropical region, Southeast Asia (including Thailand and Vietnam), Indonesia (Sundaland), and the Americas. Relatively few species in North America.

Diet

Predominantly ; all of the Zodarion are compulsory ant eaters. Some species have been observed feeding on related to ( ) and exhibit . Laboratory specimens accept (Drosophila) and .

Host Associations

Calymmochilus dispar - Attacks Zodarion styliferum in igloo retreats, penetrating walls with long ; feed on immobilized
Gelis apterus - Attacks Zodarion styliferum; makes inside igloo before

Behavior

wanderers, mainly active in twilight. Many perform , disguising as to aid in hunting and capture. During daylight, remain hidden in carefully constructed retreats. Males of some use to loosely bind female legs during mating. Mated females construct silken sacs covered with small pebbles and debris.

Ecological Role

Terrestrial ; important role in services. Some contribute to through . May serve as for .

Similar Taxa

HomalonychidaeBoth contain ground-dwelling with encrusted appearances from debris ; historically confused due to similar and preferences. Homalonychidae differs in having three pairs of and lacking the specialized -eating habits of Zodariidae.
SicariidaeSome sicariids bury themselves in loose sand, whereas zodariids do not; both are ground-dwelling but differ in specialization and retreat construction

More Details

Phylogenetic significance

The Cyrioctea, in the , shows a temperate Gondwanaland distribution pattern, implying greater age of Zodariidae than currently accepted. Unlike most Gondwanan , Cyrioctea exhibits high with small distribution areas, suggesting recent radiation after prolonged stasis.

Taxonomic diversity

The includes three : Lachesaninae, Storeninae, and Zodariinae. Recent revisions have described numerous new from Iran, Turkmenistan, Turkey, Indonesia, and Africa, with seventeen new species described from Iran and Turkmenistan alone in a single 2021 study.