Chien Lee / Stalk-eyed Fly (Teleopsis dalmanni) male, Kuching, Borneo, Malaysia

Tim Laman / Stalk-eyed Fly (Family Diopsidae) at rest on leaf, Gunung Palung National Park, Borneo, Indonesia

Juergen Freund / Stalk eyed fly (Diopsidae) resting on palm leaf, Philippines

Juergen Freund / Stalk eyed fly (Diopsidae) on rainforest leaf, Philippines

Juergen Freund / Stalk eyed fly (Diopsidae) on rainforest leaf, Philippines

Piotr Naskrecki / Stalk-eyed Fly (Diopsidae) on leaf, Guinea, West Africa

Piotr Naskrecki / Stalk-eyed Fly (Diopsidae) males engaged in communal courtship know as leking, rainforest, Guinea, West Africa

Phil Savoie / Stalk eyed fly, Thailand (Cyrtodiopsis whitei)

Phil Savoie / Stalk eyed flies (Cyrtodiopsis whitei) Males fight for mating rights, Thailand

Phil Savoie / Stalk eyed flies, males sparring (Cyrtodiopsis whitei) Thailand Males compete for mating rights

Mark Moffett / Stalk-eyed Fly (Cyrtodiopsis whitei) pair mating, South Africa

Mark Moffett / Stalk-eyed Fly (Cyrtodiopsis whitei) males confront each other, South Africa

Mark Moffett / Stalk-eyed Fly (Cyrtodiopsis whitei) has its eyes at the tips of long stalks much like Hammerhead Sharks, Brunei, Borneo

Mark Moffett / Stalk-eyed Fly (Cyrtodiopsis whitei) has its eyes positioned at the end of long stalks much like Hammerhead Sharks, Brunei, Borneo

Mark Moffett / Stalk-eyed Fly (Cyrtodiopsis whitei) two males fighting near food, Gombak, Peninsular Malaysia

Mark Moffett / Stalk-eyed Fly (Cyrtodiopsis whitei) two males in a face-off, Gombak, Peninsular Malaysia

Mark Moffett / Stalk-eyed Fly (Teleopsis sp) females in a single male's harem gather on rootlets near streams, Malaysia

Nature Production / Stalk eyed fly {Diopsidae} Sumatra, Indonesia