Sand-beach
Guides
Ellipsoptera puritana
Puritan tiger beetle
Ellipsoptera puritana, the Puritan tiger beetle, is a federally threatened species endemic to a highly restricted range in the northeastern United States. Adults are medium-sized, fast-running predators with distinctive cream-white marginal markings on their elytra. The species occupies a narrow ecological niche: sandy beaches and riverbanks backed by eroding cliffs or bluffs, where larvae burrow into exposed sediment faces. Its two-year life cycle involves larval development in burrows followed by brief adult emergence in mid-summer. Habitat loss from shoreline development, dam construction, and bank stabilization has severely reduced populations, prompting intensive conservation efforts including captive rearing programs.
Emerita
mole crabs, sand fleas, sand crabs, sand fiddlers, sea cicada
Emerita is a genus of small decapod crustaceans commonly known as mole crabs or sand fleas. These animals inhabit the intertidal zone of sandy beaches, where they burrow in the swash zone and use their antennae for filter feeding. The genus belongs to the family Hippidae and is characterized by a compact, oval body adapted for rapid burrowing in shifting sand.
Habroscelimorpha dorsalis venusta
Gulf Beach Tiger Beetle
Habroscelimorpha dorsalis venusta, commonly known as the Gulf Beach Tiger Beetle, is a subspecies of tiger beetle in the family Carabidae (subfamily Cicindelinae). It is one of several subspecies within the Habroscelimorpha dorsalis species complex. Tiger beetles in this genus are typically associated with sandy coastal habitats. The specific epithet 'venusta' suggests an attractive or elegant appearance, consistent with the often colorful and patterned nature of tiger beetles in this group.
Nebria diversa
sea beach gazelle beetle
Nebria diversa is a coastal ground beetle endemic to sandy Pacific beaches of western North America. Adults are brachypterous (short-winged), restricting dispersal to coastal habitats. The species is nocturnal and occupies a narrow ecological niche beneath driftwood and debris on open sandy shorelines.
Psammopolia insolens
Psammopolia insolens is a noctuid moth restricted to Pacific Coast sand beaches in central California. The species occurs from Carmel to Bodega Bay, with most records from the San Francisco area. Adults are active in May and again from mid-September through October. The genus name Psammopolia reflects its specialized psammophilous (sand-loving) habitat.
Psammopolia wyatti
Psammopolia wyatti is a noctuid moth first described in 1926, restricted to coastal sand beach habitats in western North America from southern Oregon to the Queen Charlotte Islands of British Columbia. Adults are active from late May through early September and are attracted to light. The species has been formally cataloged in both 1983 and 2010 MONA (Moths of North America) indices.
Tylos punctatus
Spotted Calloused Beach Pillbug
Tylos punctatus is a large, strictly nocturnal sand-beach isopod inhabiting sheltered intertidal zones from southern California to Baja California. It exhibits remarkable behavioral adaptations to this harsh environment, including precise burrowing cycles synchronized with tidal patterns and seasonal dormancy. The species has an exceptionally slow life history for an isopod, with females breeding only once annually after reaching maturity at approximately three years of age.