Drosophila
Morphology
Drosophila species are small flies, typically pale yellow to reddish brown to black, with red eyes. When film of lenses (eyes) are removed, the drosophila brain is revealed. Drosophila brain structure and function develop and age significantly from larval to adult stage. Developing brain structures make these flies a prime candidate for neuro-genetic research. Many species, including the noted Hawaiian picture-wings, have distinct black patterns on the wings. The plumose (feathery) arista, bristling of the head and thorax, and wing venation are characters used to diagnose the family. Most are small, about 2–4 mm long, but some, especially many of the Hawaiian species, are larger than a house fly.
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