Many macrographers look down on flies. Maybe they think flies are boring and ugly. I beg to differ. Fly makes a really great macro photography subject. It's widely available just about anywhere and anytime.
Just take a look at this single exposure images. If the lighting is right, and the DOF plane placed correctly, you can get a lot of lovely details out of any ordinary fly.
All shot with Canon 40D, Canon MP-E65 1X-5X macro lens and Canon MT-24EX Twin Flash
Fly: Tachinidae - possibly Carcelia sp.
Asian Papaya Fruit fly, Bactrocera papayae
Platystomatidae Sf Scholastinae (signal fly)
A mating pair of flies (Diptera). Metopia (Sarcophagidae). M. argyrocephala
Sphaeniscus sp. fly
Platystomatidae, signal fly.
Signal fly, Platystomatidae, a species of Loxonevra near decora Fabricius
A newly emerged fly, Xenaspis Osten Sacken of the Platystomatidae?
The same fly about an hour later
Tachinidae Blondeliini Male, most likely Uromedina caudata
A beautiful fly, Adrama sp?
Curtonotidae genus Axinota
Diopsidae sp. Teleopsis dalmanni?
Microdon auroscutatus Curran
Conopid fly Leopoldius calceatus
Marsh fly Sciomyzidae
So the next time you see a fly....treat it with respect :D. It makes a great macro subject!