Drone-fly
Guides
Eristalis anthophorina
orange-spotted drone fly
Eristalis anthophorina, the orange-spotted drone fly, is a syrphid fly with Holarctic distribution. Adults reach approximately 15 mm in length and are notable mimics of bumblebees. The species is strongly associated with wetland habitats including bogs, fens, and woodland pools. It has been observed visiting flowers of Verbena hastata, Salix myricoides, and Hesperis matronalis.
Eristalis cryptarum
Bog-dwelling Drone Fly, Bog Hoverfly
Eristalis cryptarum is a Holarctic hoverfly species specializing in bog and wetland habitats. It is notable for its restricted distribution and significant population declines across Europe, with extirpation from much of its former English range and critical endangerment in Denmark. The species exhibits classic Eristalis morphology with distinctive coloration and is a member of the drone fly group, though it is not a bee mimic to the same degree as some congeners. Its larvae are assumed to be aquatic filter-feeders in saturated peat, though they remain undescribed.
Eristalis fratercula
Eristalis fratercula is a species of drone fly in the family Syrphidae, described by McNeill. It belongs to a genus of hoverflies known for Batesian mimicry of bees and wasps. The species is listed in grasshopper survey records from Colorado and Wyoming, suggesting it occurs in western North American grasslands. Like other Eristalis species, adults are likely pollinators and larvae develop in aquatic or semi-aquatic organic-rich habitats.
Eristalis gomojunovae
Arctic Drone Fly
A species of hoverfly in the genus Eristalis, commonly known as the Arctic Drone Fly. Described by Violovich in 1977, this species belongs to the drone fly group within the family Syrphidae. Like other Eristalis species, it is presumed to exhibit Batesian mimicry of bees or wasps. The specific epithet honors an individual, following the naming convention for this species. Very limited information exists on its biology and ecology compared to better-studied congeners such as Eristalis tenax.
Eristalis hirta
Black-footed Drone Fly
Eristalis hirta, commonly known as the black-footed drone fly, is a syrphid fly species first described by Loew in 1866. It is a common species in Western North America and also occurs in Northern Europe. Like other Eristalis species, it exhibits Batesian mimicry of honey bees, providing protection from predators. The larvae are aquatic filter-feeders with the characteristic rat-tailed morphology, developing in standing water habitats.
Eristalis interrupta
Eristalis interrupta is a species of hoverfly (family Syrphidae) in the genus Eristalis. Like other members of this genus, it belongs to a group commonly known as drone flies due to their resemblance to honey bees. The genus Eristalis contains species that are important pollinators and whose larvae are aquatic decomposers found in organic-rich water. Specific details about E. interrupta are limited in the provided sources, though it shares the general characteristics of Eristalis species including Batesian mimicry of bees and wasps.
Eristalis obscura
Dusky Drone Fly
Eristalis obscura, commonly known as the dusky drone fly, is a species of syrphid fly first described by Loew in 1866. It is widespread across northern North America and extends eastward through Europe to Siberia. The species exhibits the characteristic rat-tailed maggot larval form, with aquatic larvae that function as filter-feeders. Like other members of the genus Eristalis, adults are likely bee mimics, though specific documentation of this behavior for E. obscura is limited.
Eristalis saxorum
Blue-polished Drone Fly
Eristalis saxorum is an uncommon species of syrphid fly (hoverfly) native to eastern North America. Adults are flower visitors, obtaining nectar and pollen from blossoms. The species exhibits typical drone fly characteristics, including bee-mimicry and hovering flight behavior. Larvae are presumed to be of the rat-tailed type, though they have not been formally identified for this species. The species is active from mid-March through late October, with adults overwintering in sheltered locations such as cave entrances.