Stegodyphus lineatus is a desert‑adapted velvet spider found across the Mediterranean basin, the Middle East, and parts of Central Asia. It inhabits dry, open landscapes where it constructs dense, silk‑lined retreats within shrubs or rock crevices. The species is instantly recognisable by its pale, velvety abdomen marked with dark longitudinal striping, contrasting with a compact, robust body typical of the Eresidae.
 
This spider is best known for its unusual reproductive strategy and strong maternal investment. Females guard their nests, tend their egg sacs, and remain with the emerging spiderlings, providing protection during their earliest and most vulnerable life stages. In the wild, this maternal care can extend into extreme forms of provisioning, a hallmark of the genus.
 
Behaviourally, S. lineatus is a sit‑and‑wait predator, relying on its silk retreat and surrounding capture threads to intercept passing insects. It is a slow‑moving, non‑aggressive species with a calm disposition, making it a fascinating representative of velvet spiders. Its ecological role centres on controlling small arthropod populations within arid ecosystems, where its specialised lifestyle allows it to thrive despite harsh environmental conditions.