Chalcosyrphus is a genus of hoverflies in the subfamily Eristalinae. Many species exhibit some degree of mimicry of various sawflies and other hymenopterans and are often brightly coloured or metallic in hue. The adults are similar in structure and behavior to the related genus Xylota but differ in larval morphology. They can be found throughout Europe, Asia, and North America and seem to prefer damper, boggy habitats. The larvae are saproxylic feeders in rotten wood in these habitats.
Chalcosyrphus (Xylotomima) inarmatus, the Yellow-haired Leafwalker, is an uncommon species of syrphid fly found across northern North America. Hoverflies are able to remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen.
Chalcosyrphus (Xylotomima) plesia, the Black-hipped Leafwalker, is an uncommon species of syrphid fly and a mimic of Sphex nudus. This fly is found in the northeastern United States and southeastern Canada. Hoverflies can remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen.
Chalcosyrphus (Xylotomima) metallicus, the Yellow-legged Leafwalker, is an uncommon species of syrphid fly observed in the southeastern United States. Hoverflies are able to remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen.
Brachyopa daeckei, the black-tailed sapeater, is a rare species of syrphid fly that has been observed in northeastern North America. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen. Larvae for this genus are of the rat-tailed type. B.daeckei larvae have not been described.
Criorhina caudata is a species of hoverfly in the family Syrphidae.
Blera garretti is a species of hoverfly in the family Syrphidae.
Blera nigripes is a species of hoverfly in the family Syrphidae.
Chalcosyrphus depressus the Wide-eyed Leafwalker, is a rare species of syrphid fly observed from Idaho and Montana. Hoverflies can remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found on flowers, from which they get both energy-giving nectar and protein-rich pollen.
Chalcosyrphus flexus is a species of syrphid fly in the family Syrphidae.
Chalcosyrphus (Xylotomima) ontario, the Bare-winged Leafwalker, is a rare species of syrphid fly found in Southeastern and Western Canada and in California. Hoverflies can remain nearly motionless in flight. The adult of the species are also known as flower flies, as they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen.
Xylota confusa ,, the Confusing Leafwalker , is an uncommon species of syrphid fly observed across Northern North America. Syrphid flies are also known as Hover Flies or Flower Flies because the adults are frequently found hovering around flowers from which they feed on nectar and pollen. Adults are 9.3–12.6 mm (0.37–0.50 in) long. The larvae of this genus live under bark in sap runs.
Xylota flukei is a species of hoverfly in the family Syrphidae.
Xylota hinei , ( ), the Hine's Leafwalker , is an uncommon species of syrphid fly observed in Eastern Canada. Syrphid flies are also known as Hover Flies or Flower Flies because the adults are frequently found hovering around flowers from which they feed on nectar and pollen. Adults are 7.8–12.9 mm (0.31–0.51 in) long, black with yellow spots. The larvae of this genus live under bark in sap runs.
Xylota micrura is a species of hoverfly in the family Syrphidae.
Xylota ouelleti is a species of hoverfly in the family Syrphidae.
Xylota tuberculata is a species of hoverfly in the family Syrphidae.
Brachyopa punctipennis, commonly known as the spot-winged sapeater, is a fly species in the syrphid family. First appearing in Oregon, this rarely collected species had been considered a form of Brachyopa notata until Curran named it a separate species in 1925.
Brachyopa perplexa , The Hairy-striped Sapeater, is an uncommon species of syrphid fly. It has been observed from the Appalachian Mountains to New York and Quebec, Canada. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies, for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen. Larvae for this genus are of the rat-tailed type. B.perplexa larvae have not been described.
Helophilina is a subtribe of rat-tail maggot flies in the family Syrphidae. There are about 19 genera and more than 180 described species in Helophilina.
