Crocidium (fly)
''Crocidium'' is the name of two genera of life-forms: * '' Crocidium (fly)'', a genus in the bee-flies family Bombyliidae * ''Crocidium (plant) ''Crocidium'' is a small North American genus of plants in the daisy family. ''Crocidium'' is native to western North America: British Columbia Washington, Idaho, Oregon, and California. ''Crocidium'' can be found in varied habitats from grassl ...

Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ...
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Crocidium (fly)
''Crocidium'' is the name of two genera of life-forms: * '' Crocidium (fly)'', a genus in the bee-flies family Bombyliidae * ''Crocidium (plant) ''Crocidium'' is a small North American genus of plants in the daisy family. ''Crocidium'' is native to western North America: British Columbia Washington, Idaho, Oregon, and California. ''Crocidium'' can be found in varied habitats from grassl ...

Bombyliidae
The Bombyliidae are a family of flies, commonly known as bee flies. Adults generally feed on nectar and pollen, some being important pollinators. Larvae are mostly parasitoids of other insects. Overview The Bombyliidae are a large family of flies comprising hundreds of genera, but the life cycles of most species are known poorly, or not at all. They range in size from very small (2 mm in length) to very large for flies (wingspan of some 40 mm).Hull, Frank Montgomery, Bee flies of the world: the genera of the family Bombyliidae Washington, Smithsonian Institution Press 1973 . Downloadable from: https://archive.org/details/beefliesofworl2861973hull When at rest, many species hold their wings at a characteristic "swept back" angle. Adults generally feed on nectar and pollen, some being important pollinators, often with spectacularly long proboscises adapted to plants such as '' Lapeirousia'' species with very long, narrow floral tubes. Unlike butterflies, bee flies ...
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