Detritivore
Guides
Tylos
Calloused Beach Pillbugs
Tylos is a genus of terrestrial isopods (woodlice) in the family Tylidae, commonly known as calloused beach pillbugs. These crustaceans are specialized inhabitants of sandy coastal environments, living in the supralittoral zone above the driftline on ocean beaches. They exhibit remarkable adaptations for life in this harsh habitat, including powerful burrowing abilities, strong desiccation resistance, and behavioral synchronization with tidal and diel cycles. Most species are nocturnal, emerging at night to feed on beach-cast organic material such as kelp and other detritus.
Uhlorchestia
beach hoppers
Uhlorchestia is a genus of talitrid amphipods endemic to salt marshes along the Atlantic coast of North America. The genus contains two described species: U. spartinophila and U. uhleri. These amphipods are closely associated with smooth cordgrass (Spartina alterniflora) and function as detritivores in salt marsh ecosystems. Population studies indicate high turnover rates and year-round reproduction with seasonal peaks.
Uhlorchestia uhleri
beach hopper, salt marsh amphipod
Uhlorchestia uhleri is a talitrid amphipod endemic to salt marshes along the Atlantic coast of North America. This semi-terrestrial crustacean is tightly associated with salt marsh vegetation, particularly Spartina grasses, and exhibits morphological adaptations for life in intertidal environments including reduced gills and modified pleopods. The species plays a role as a detritivore in salt marsh ecosystems and serves as prey for marsh predators.
Utabaenetes
Tanner's black camel cricket
Utabaenetes is a monotypic genus of camel crickets (Rhaphidophoridae) endemic to the San Rafael Desert and adjacent Colorado Plateau of the western United States. The sole species, U. tanneri, is restricted to areas of loose sand and active dunes where it reaches high local densities. This dune-dwelling species exhibits specialized behavioral and ecological adaptations to arid environments.
Venezillo parvus
Little Pill Woodlouse
Venezillo parvus is a small terrestrial isopod commonly known as the Little Pill Woodlouse. It belongs to the family Armadillidae, a group characterized by their ability to conglobate (roll into a complete ball). The species has been documented in both North America and Europe, with its native range presumed to be European and North American populations representing introduced populations. It is a detritivore that contributes to decomposition processes in terrestrial ecosystems.
Venezillo pisum
Venezillo pisum is a species of terrestrial isopod in the family Armadillidae, first described by Budde-Lund in 1885. The specific epithet 'pisum' (Latin for 'pea') likely refers to some aspect of its appearance or behavior, though the original description's reasoning is not preserved in available sources. As a member of the Oniscidea (woodlice and pill bugs), it is a detritivore inhabiting moist terrestrial environments. The species has been recorded in North America, though it may represent an introduced population given its original description from European material.
Volucella
hover-flies, flower flies
Volucella is a genus of large, broad-bodied hoverflies in the family Syrphidae. These flies are notable for their Batesian mimicry of stinging Hymenoptera—particularly bumble bees and hornets—which provides protection from predators. Adults are regular flower visitors that feed on nectar, while larvae develop as inquilines in the nests of social bees and wasps, functioning as detritivores and predators of host larvae. The genus exhibits strong migratory behavior and males are often territorial.
Xystocheir dissecta taibona
Xystocheir dissecta taibona is a subspecies of flat-backed millipede in the family Xystodesmidae. It is a synonym of Xystocheir taibona and is known from California. Like other members of its genus, it produces cyanide as a chemical defense against predators. The subspecies is documented as prey for the specialized carabid beetle Promecognathus.
Zanclognatha laevigata
Variable Zanclognatha, Variable Fan-foot
Zanclognatha laevigata is a litter moth in the family Erebidae, described by Augustus Radcliffe Grote in 1872. It is widely distributed across eastern North America, from Manitoba to Nova Scotia and south to Florida and Missouri. The species has a wingspan of approximately 30 mm and produces one generation annually. Larvae feed on detritus, particularly dead leaves.
Zanclognatha lituralis
Lettered Zanclognatha, Lettered Fan-foot
Zanclognatha lituralis is a small litter moth in the family Erebidae, commonly known as the Lettered Zanclognatha or Lettered Fan-foot. It was described by Jacob Hübner in 1818. The species is widespread across eastern North America and is notable for its detritivorous larval diet.
Zanclognatha obscuripennis
Dark Zanclognatha, Dark Fan-foot
Zanclognatha obscuripennis is a small litter moth in the family Erebidae, commonly known as the Dark Zanclognatha or Dark Fan-foot. It was described by Augustus Radcliffe Grote in 1872. The species is widely distributed across eastern and central North America. Adults are active primarily in spring and early summer, with two generations per year in most of its range and continuous breeding in Florida.
Zapada
forestflies, spring stoneflies, little brown stoneflies
Zapada is a genus of small spring stoneflies in the family Nemouridae, commonly known as forestflies or little brown stoneflies. The genus contains at least 10 described species distributed across western North America, from Alaska and the Rocky Mountains to California. Adults are 5–8 mm in body length and emerge in early spring, often February through April depending on elevation and species. Nymphs are aquatic shredders that process leaf litter and other organic matter in cold, well-oxygenated streams.