Undescribed-larvae
Guides
Chrysosyrphus latus
Variable Wrinklehead
Chrysosyrphus latus, commonly known as the Variable Wrinklehead, is a rare syrphid fly species first described by Loew in 1863. The species is found in the eastern United States and is widespread across Canada. Adults are associated with flowers where they feed on nectar and pollen. The larval stage remains undescribed.
Dasysyrphus intrudens
intrudens complex
Dasysyrphus intrudens is a species complex of hover flies (family Syrphidae) distributed across the Holarctic realm, including North America, Europe, and parts of Asia. The name currently encompasses multiple cryptic species that have not yet been formally delineated. Adults are frequently observed, but larvae remain undescribed as of 2012, possibly due to nocturnal habits.
Haeterius blanchardi
clown beetle
Haeterius blanchardi is a myrmecophilous clown beetle (family Histeridae) native to the eastern United States. The species is known to inhabit colonies of the ant Formica pallidefulva, though its precise ecological relationship with the host remains incompletely documented. Adults have been recorded from Wisconsin, Massachusetts, New Jersey, Connecticut, Pennsylvania, and Virginia. The larvae have not been formally described.
Orthonevra nitida
Wavy Mucksucker
Orthonevra nitida, commonly known as the Wavy Mucksucker, is a small syrphid fly (4–5 mm) native to eastern and central North America. It is one of three Nearctic Orthonevra species that extends into the Neotropical region. Adults are flower visitors, obtaining nectar and pollen from blooms. The species exhibits distinctive metallic coloration and wing markings that aid in identification. Larvae of this genus are of the rat-tailed type, though O. nitida larvae specifically have not been described.
Teuchocnemis bacuntius
Orange Spur Fly
Teuchocnemis bacuntius is a rare species of syrphid fly in the family Syrphidae, commonly known as the Orange Spur Fly. Adults are medium-sized hoverflies distinguished by orange coloration and sexually dimorphic leg modifications. The species has been documented in the eastern United States with historical records from Georgia and Texas, though it remains poorly known with larvae undescribed.