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Larvae of syrphid flies in the genus Microdon are so odd that they were originally described as molluscs. The adults are more or less normal-looking flies, but larvae are predators of ant brood, living within the dark galleries of ant nests (in this case, with Linepithema oblongum). Termas de Reyes, Jujuy, Argentina
An ant-mugging fly (Milichia patrizii) chases down Crematogaster ants on a South African tree branch. If the fly can catch an ant, she will force the ant to feed her. filename: milichiid4
Milichia patrizii, the ant-mugging fly, is a kleptoparasite of Crematogaster ants. St. Lucia, KZN, South Africa
An ant-mugging fly (Milichia patrizii) chases down Crematogaster ants on a South African tree branch. If the fly can catch an ant, she will force the ant to feed her. St. Lucia, KZN, South Africa
An ant-mugging fly (Milichia patrizii) forces a Crematogaster ant to give up her food stores. South Africa. St. Lucia, KZN, South Africa
A trio of parasitic phorid flies (Pseudacteon lontrae) hover over an ant nest (Linepithema oblongum) looking for targets. Termas de Reyes, Jujuy, Argentina
Larvae of syrphid flies in the genus Microdon are so odd that they were originally described as molluscs. The adults are more or less normal-looking flies, but larvae are predators of ant brood, living within the dark galleries of ant nests (in this case, with Linepithema oblongum). Termas de Reyes, Jujuy, Argentina
Two Tabanus horseflies face off in a territorial skirmish atop a mountain in California's Sierra Nevada. filename: Tabanus5
Portrait of a midge, Cecidomyiidae. filename: cecidomyid1
An ant-mugging fly (Milichia patrizii) chases down Crematogaster ants on a South African tree branch. If the fly can catch an ant, she will force the ant to feed her.

filename: milichiid4
An ant-mugging fly (Milichia patrizii) chases down Crematogaster ants on a South African tree branch. If the fly can catch an ant, she will force the ant to feed her. filename: milichiid4
An ant-mugging fly (Milichia patrizii) chases down Crematogaster ants on a South African tree branch. If the fly can catch an ant, she will force the ant to feed her.

filename: milichiid4
See photo in original gallery.
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all images and text © Alex Wild 2001-2013