Collembolan
Guides
Anurida maritima
seashore springtail, rock springtail
Anurida maritima is a cosmopolitan springtail confined to the intertidal zone, where it forms dense aggregations of up to several hundred individuals on rock-pool surfaces. This wingless collembolan exhibits unique adaptations to marine conditions, including a vestigial furcula that prevents jumping and hydrophobic body hairs that enable it to remain on water surfaces. The species demonstrates complex behavioral rhythms synchronized with tidal cycles and survives winter through egg diapause. Recent genetic studies have revealed cryptic speciation within this morphospecies, with distinct mitochondrial and nuclear lineages now recognized.
Pseudosinella folsomi
A species of slender springtail in the family Entomobryidae, originally described from North America. Pseudosinella folsomi belongs to a large genus of elongate collembolans characterized by reduced body pigmentation and long antennae. The species is documented in scattered records across southern North America.