Arthropod Assemblages in Desert Ecosystems of Alula County, Saudi Arabia

supported more even and morphospecies-diverse assemblages. Springtails (class Collembola: specifically order Entomobryomorpha) accounted for 24% of all individuals sampled and were recorded across both habitat types despite extreme aridity. We also report the first local records, to our knowledge, of the spider family Tetragnathidae in AlUla County, based on three morphospecies. These findings provide an initial empirical reference for a poorly studied hyper-arid region and highlight the need for expanded temporal sampling, broader habitat coverage and improved taxonomic resolution to better characterise arthropod assemblage patterns and their potential relevance for monitoring and management.