Staffan Widstrand / Interior of an ant plant, Myrmecophyte, that lives in a mutualistic association with a colony of ants. Lowland rainforest, Aiduma Island, near Triton Bay, Mainland New Guinea, Western Papua, Indonesi...

Emanuele Biggi / Palm (Korthalsia robusta) defended by host ants (Myrmoplatys sp.), Poring Hot Springs, Borneo.

Emanuele Biggi / Crematogaster ants working on their home-plant, a myrmecophilous Macaranga sp., Lambir Hills National Park, Sarawak, Borneo

Emanuele Biggi / Crematogaster sp. ants carrying their larvae and pupae into their host plant (Macaranga sp.), Borneo

Emanuele Biggi / Leea indica, a myrmecophile plant with an ant (Crematogaster sp.) on its pearl bodies, a growth which provides food fo the ants who protect the plant. Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Korthalsia rostrata myrmecophyte plant with symbiotic ants (Cerataphis sp.), Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Korthalsia rostrata myrmecophyte plant with symbiotic ants (Cerataphis sp.), Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Ant-fern (Lecanopteris sp) structure which allows ants to symbiotically live with the fern. Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Ant-fern (Lecanopteris sp) structure which allows ants to symbiotically live with the fern. Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Ant-fern (Lecanopteris sp) structure which allows ants to symbiotically live with the fern. Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Myrmecodia tuberosa, myrmecophyte ant-plant with ants. Bako National Park, Sarawak, Borneo. On the left, a smaller Hydnophytum formicarum with leaves.

Emanuele Biggi / Ant plant (Myrmecodia tuberosa) myrmecophyte, a plant which lives with symbiotic ants (Iridomyrmex / Philidris cordatus). Bako National Park, Sarawak, Borneo.