This is a name that is no longer used (or widely accepted) in systematics/nomenclature. Obsolete family names are the most problematic.
Links: http://en.wikiped...in_Diptera.
A pair of bristles that usually arise from the ocellar triangle near the anterior ocellus but that are sometimes displaced, usually outside the ocellar triangle near the anterior ocellus.
The image is a temporary link to:
http://upload.wikimedia.org/wikipedia/commons/c/cf/Head-diptera-muscoidfly.gif
Ovovivipary is a phenomenon where eggs not only develop in the female body, but also hatch there, and that the larvae are 'born' only when the conditions are favourable.
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