Saprophagous-larvae
Guides
Adoxomyia
soldier flies
Adoxomyia is a genus of soldier flies (Stratiomyidae) comprising at least 30 described species. The genus has a broad geographic distribution, with species documented across the Palaearctic, Nearctic, Oriental, and Neotropical regions. Larvae develop in decaying vegetable substrates, particularly rotting roots and stems of plants in desert and arid environments. Adults are often associated with flowers.
Chalcosyrphus metallicus
Yellow-legged Leafwalker
Chalcosyrphus metallicus is an uncommon species of syrphid fly found in the southeastern United States. Unlike many hoverflies that visit flowers for nectar and pollen, adults of this species are associated with dead and decaying wood. The species exhibits distinctive enlarged and spinose metafemora on the hind legs, a trait shared with related species in the genus. Larvae develop as saprophages in rotting wood rather than as aphid predators like many other syrphids.
Chalcosyrphus metallifer
Orange-horned Leafwalker
Chalcosyrphus metallifer, commonly known as the Orange-horned Leafwalker, is a rare species of syrphid fly found in the Eastern United States. Adults are typically observed on flowers, where they feed on nectar and pollen. The species belongs to the subgenus Xylotomima within the genus Chalcosyrphus, a group whose larvae are associated with decaying wood rather than the aphid predation typical of many hoverflies.
Chalcosyrphus nemorum
Dusky-banded Leafwalker
Chalcosyrphus nemorum is a common species of syrphid fly with a Palearctic and Nearctic distribution. Adults are medium-sized hoverflies with distinctive enlarged, swollen hind femora bearing ventral spines and curved hind tibiae—adaptations associated with their association with dead wood. The species exhibits sexual dimorphism, with males having holoptic (contiguous) eyes. Larvae develop under the bark of conifers (Larix, Pinus) and various hardwoods, where they function as saprophages in decaying wood. Adults are flower visitors, obtaining nectar and pollen from diverse plant species including white umbellifers, Caltha, Anemone nemorosa, and Ranunculus.
Dactylolabis cubitalis
Dactylolabis cubitalis is a species of limoniid crane fly described by Osten Sacken in 1869. It is a small, delicate fly belonging to a genus characterized by distinctive leg modifications. The species has a documented but restricted distribution in the eastern United States.
Euphoria
flower chafers, fruit chafers
Euphoria is a genus of scarab beetles in the subfamily Cetoniinae, commonly known as flower or fruit chafers. The genus contains 59 species as of 2012 and is native to the Americas, with its highest diversity in Mexico and Central America. These beetles are characterized by their association with flowers and fruits, where adults feed and aggregate.
Leia
Leia is a genus of fungus gnats in the family Mycetophilidae, first described by Johann Wilhelm Meigen in 1818. These small, delicate flies are classified within the subfamily Leiinae and tribe Leiini. The genus comprises numerous species distributed across various regions, with larvae typically developing in decaying organic matter and fungi. Adults are generally found in moist, shaded habitats where their larval food sources occur.
Megasoma punctulatum
Arizona elephant beetle
Megasoma punctulatum, commonly known as the Arizona elephant beetle, is a species of rhinoceros beetle in the family Scarabaeidae. It is a member of the genus Megasoma, which includes some of the largest and heaviest beetles in the Americas. Like other members of its genus, this species exhibits strong sexual dimorphism, with males bearing prominent horns on the head and pronotum that are used in combat with other males. The species is found in the southwestern United States and northwestern Mexico.
Nausigaster
Nausigaster is a genus of hoverflies (Syrphidae) endemic to the New World, containing approximately 15 described species. The genus was established by Williston in 1884. Larvae have been documented developing in decaying cacti and bromeliads, suggesting a specialized association with these plant substrates. Adult records span from Argentina to Mexico, with recent collections extending known distributions in Colombia and Argentina.
Neossos
Neossos is a genus of acalyptrate flies in the family Heleomyzidae. The genus is rarely collected and contains at least six described species distributed across the Nearctic region and western Europe. Most specimens have been collected from or reared in association with bird nests, where larvae develop as saprophages in nest material. The genus represents a specialized ecological association with avian nesting habitats.
Phaonia
Phaonia is a large genus of muscid flies comprising over 750 described species with worldwide distribution. Adults are generally medium-sized flies. Larval stages of studied species develop in decomposing organic matter including animal excrements and decaying plant material, functioning as decomposers in nutrient cycling.
Platystoma seminationis
Dancing Kiss Fly
Platystoma seminationis is a small signal fly (family Platystomatidae) distributed across Europe and the Near East, with introduced populations in North America. Adults are active from May to October and are known for their distinctive courtship ritual, in which males and females touch proboscises for 5–15 seconds after a dance of rapprochement. The species feeds primarily on nectar and pollen of Euphorbia species, as well as feces, while larvae develop in decaying vegetable matter and fungi.
Xylota angustiventris
Two-spotted Leafwalker
Xylota angustiventris is an uncommon syrphid fly species found in northeastern North America. Adults are medium-sized hover flies measuring 12.2–14.4 mm, predominantly black with two distinct yellow spots on the abdomen in males. The species belongs to the genus Xylota, whose larvae typically develop in decaying wood or tree holes where they feed on sap or decaying organic matter rather than being predatory. Adults are associated with flowers where they feed on nectar and pollen.