The following is an incomplete list of hoverfly species within the genus Toxomerus :
Paragus is a genus of hoverflies.
Hover flies of the genus Microdon are unusual among the Diptera. Like other members of the subfamily, they are myrmecophiles, meaning they inhabit the nests of ants.
Merodon is a large genus of bee-like hoverflies. The majority of the species are centered on the Mediterranean and it is the second largest hoverfly genus in Europe with more than 50 European species. It is distributed over the Palaearctic and Afrotropical realms, with most European species occurring in Southern and Eastern Europe. The centre of distribution of this genus appears to be Turkey, where about 65 species have been recorded. Some species occur in Africa and the middle East, as far as Pakistan. Given the rate at which new species have been recorded over the past decades, the worldwide number of species could exceed 200. The larvae feed on the bulbs or rhizomes of monocotyledons.
Platycheirus is a large genus of hoverflies. They are also called sedgesitters.
Toxomerus is a very large genus of hoverflies. They are found in many parts of North and South America. Most larvae are predators on soft bodied insects, though a few species have been shown to feed on pollen. Adults feed on the pollen of a wide range of flowers.
Archimicrodon is a genus of hoverflies. Many of the species in this genus were moved from Microdon by Reemer & Ståhls (2013). Previously, it had been described as having three known species.
Chymophila is a subgenus of the hoverfly genus Microdon. It was previously considered to be exclusively Neotropical, but is now also known from the Nearctic and Oriental realms, and one species is known from Japan. Chymophila was based on a composite type species: the holotype is a body of C. fulgens with the head of a conopid glued on.
Mixogaster is a genus of hoverflies native to North America and South America, with 21 known species. Mixogaster is distinct by lacking an appendix on vein R4+5, having a reduced and bare metasternum, an unarmed scutellum, and usually an appendix on vein M extending in cell R4+5. Larvae are found in ant nests.
The Syrphini are a tribe of hoverflies.
Ocyptamus is a large and diverse genus of over 200 species of hoverfly mostly found in the Neotropical region. It is likely that many of these species will be discovered to be synonyms though many others await description.
Citrogramma is a genus of hoverfly.
Palpada is a genus of 85 neotropical and nearctic flower flies or hoverflies This genus is often colorful and bee-like. It is in the tribe Eristaliini containing dozens of genera Common sister genera include Eristalis (99 species), Meromacrus (43 sp.), Eristalinus (100 sp.) and Helophilus (50 sp.). The genus palpada is distinguished by:
Peradon is a genus of hoverfly from the Neotropical realm, containing 31 species. Many of the species were originally described in the genus Microdon.
Orphnabaccha is a genus of hoverflies in the Neotropical region, formerly included in the genus Ocyptamus, which was split after researchers determined it was not monophyletic.
Hybobathus is a genus of hoverfly in the Neotropical region, formerly included in the genus Ocyptamus, which was split after researchers determined it was not monophyletic.
Toxomerus basalis, commonly known as the sundew flower fly, is a species of kleptoparasitic fly endemic to Brazil. It was first described by Francis Walker in 1836. It feeds on captured, immobilized insects caught on the sticky leaves of sundew plants, which are carnivorous. Adult flies seem to have some capacity to escape from Drosera leaves if they have not come into contact with too many of the tentacles. The species is non-specific and have been found on large-leaved, semi-erect, and thread-like Drosera species, such as Drosera graomogolensis and Drosera magnifica.
Total of 245 species either found or highly expected to be found in New York.
Fazia is a genus of hoverflies, formerly treated as a subgenus of Allograpta, but now treated as a genus, though not monophyletic as presently defined.