A side view of Planococcus citri, the citrus mealybug, shows the beak the insect uses to feed on plant juices.
Planococcus citri - citrus mealybug.
The underside of a citrus mealybug (Planococcus citri) reveals the insect's functional- if small- walking legs.
A Lasius (Acanthomyops) arizonicus citronella ant tends to a mealybug in an underground nest.

Huachuca Mountains, Arizona, USA
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
Technomyrmex albipes - white-footed ant tending to a mealybug (Pseudococcidae) for honeydew. 

Cape Tribulation, Queensland, Australia
Technomyrmex albipes - white-footed ant tending to a mealybug (Pseudococcidae) for honeydew. 

Cape Tribulation, Queensland, Australia
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
A nearly blind Acropyga goeldii worker ant tends to root-feeding mealybugs in an underground chamber. The ants depend on their hemipteran "cattle" for food, while the mealybugs are kept safe from predators and carried to new roots by their ant guards.

Viçosa, Minas Gerais, Brazil
See photo in original gallery.
all images and text © Alex Wild 2001-2013