Haplogyne Spiders (Infraorder Haplogynae)

Infraorder Haplogynae is a major group of spiders within the order Araneae, traditionally distinguished from the infraorder Entelegynae by features of their reproductive anatomy, particularly the generally simpler female genital structures. Haplogyne spiders occur worldwide and occupy a wide range of habitats, including forests, grasslands, caves, leaf litter, and human settlements. They vary considerably in size, body shape, coloration, and hunting behavior. Many are small, secretive species that live beneath stones, inside crevices, or among vegetation, while others construct webs or actively hunt prey. Their diet consists mainly of insects and other small invertebrates, making them important predators in terrestrial ecosystems. Haplogynae includes several diverse spider lineages, such as cellar spiders, recluse spiders, and various ground-dwelling and cave-associated spiders. Although the group remains useful in traditional classifications, modern spider taxonomy continues to revise its evolutionary relationships based on anatomical and molecular evidence.