Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) gliding from tree, controlled conditions, from Malaysia and Indonesia

Clay Bolt / Wallace's giant bee (Megachile pluto) and nest on tree trunk. North Moluccas, Indonesia.T his is the only photo that is known to exist of this species (the world's largest bee) in the wild, in situ, a...

Clay Bolt / Entomologist and bee expert Eli Wyman with the first rediscovered individual of Wallace's giant bee (Megachile pluto) Mollucas, Indonesia. January 2019. Model released.

Clay Bolt / Entomologist examining a large female Megachile bee during the hunt to rediscover Wallace's giant bee (Megachile pluto) on the island of Ternate, North Moluccas, Indonesia. January 2019

Clay Bolt / Composite image of Wallace's giant bee (Megachile pluto) with European honey bee (Apis melifera). This is the world's largest bee, which is approximately 4 times larger than a European honey bee. One...

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Gunung Penrissen, Sarawak, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) gliding, Danum Valley Field Center, Sabah, Borneo, Malaysia

Nick Garbutt / Wallace's Flying frog (Rhacophorus nigropalmatus) male from lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo. Photographed in situ in makeshift studio in the forest.

Nick Garbutt / Wallace's flying frog (Rhacophorus nigropalmatus) male from lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo. Photographed in situ in makeshift studio in the forest.

Tim Laman / View of beach, and man fishing from a dugout canoe, at Yenbeser Village. Alfred Russel Wallace based himself in this village for several months in the 1850's. Raja Ampat Islands, Indonesia. May 2007

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on tree trunk in lowland rainforest showing webbed feet, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Stephen Dalton / Wallace's gliding frog (Rhacophorus nigropalmatus) flying, controlled conditions

Stephen Dalton / Wallace's gliding frog (Rhacophorus nigropalmatus) flying, controlled conditions

Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) leaping, controlled conditions, from Asia

Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) gliding from tree, controlled conditions, from Malaysia and Indonesia

Stephen Dalton / Wallace's / Abah river flying frog (Rhacophorus nigropalmatus) gliding, controlled conditions, showing use of webbed feet, from Malaysia and Indonesia

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male calling at display site in rainforest canopy, Kali Batu Putih, Halmahera Island, North Moluccas, Indonesia.

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at display site in rainforest canopy, Halmahera, North Moluccas, Indonesia.

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at display site in the rainforest canopy, Kali Batu Putih, Halmahera Island, North Moluccas, Indonesia.

Nick Garbutt / Wallace's gliding frog (Rhacophorus nigropalmatus) with head peering out from behind leaf. Danum Valley, Sabah, Borneo

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} in flight, gliding down from canopy, Danum Valley, Sabah, Borneo.

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} portrait perching on vegetation, Danum Valley, Sabah, Borneo.

Tim MacMillan / John Downer Pr / Wallace's gliding frog's extensive foot webbing allows it to glide long distances (Resolution restriction - image digitised from film, 'Weird Nature' tv series)

Clay Bolt / Entomologist Simon Robson with large Megachile species of bee during the hunt to rediscover Wallace's giant bee (Megachile pluto). Mollucas, Indonesia. January 2019

Clay Bolt / Man examining an arboreal termite mound containing the first rediscovered Wallace's giant bee (Megachile pluto) and her nest, Mollucas, Indonesia. January 2019

Clay Bolt / Lowland forest habitat of Wallace's giant bee (Megachile pluto) North Moluccas, Indonesia. January 2019

Clay Bolt / Scientists observing a termite mound after a large flying insect was found nearby in a healthy patch of lowland forest, North Moluccas, Indonesia. January 2019

Clay Bolt / Entomologist and bee expert observing an arboreal termite mound. The termite mound has an interesting hole resembling an entrance for Wallace's giant bee (Megachile pluto) Mollucas, Indonesia. January...

Clay Bolt / Wallace's giant bee (Megachile pluto) rediscovery team exploring a lowland forest habitat in the North Moluccas, Indonesia. January 2019

Clay Bolt / Natural history photographer Clay Bolt and writer Glen Chilton examine a termite mound while searching for Wallace's giant bee (Megachile pluto) Mollucas, Indonesia. January 2019

Clay Bolt / Wallace's giant bee (Megachile pluto) is the world's largest bee, which is approximately 4 times larger than a European honey bee. One of the first images of a living member of this species. Mollucas,...

Gavin Hellier / Aerial view of Stirling Castle and the Wallace Monument, Stirlingshire, Scotland, UK, October 2017. Hellier

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) in rainforest, Gunung Penrissen, Sarawak, Borneo, Malaysia

Staffan Widstrand / Horned ghost crab (Ocypode ceratophthalma) Lowland rainforest, Karawawi River, Kumawa Peninsula, mainland New Guinea, Western Papua, Indonesian New Guinea, on the Science et Images "Expedition Papua,...

Staffan Widstrand / Montane rainforest orchid, near FakFak, Mainland New Guinea, Western Papua, Indonesian New Guinea, on the Science et Images "Expedition Papua, in the footsteps of Wallace", by Iris Foundation

Staffan Widstrand / Tree bark of a Pandanus sp. tree, Misool Island, Raja Ampat, Western Papua, Indonesian New Guinea, on the Science et Images "Expedition Papua, in the footsteps of Wallace", by Iris Foundation

Staffan Widstrand / Young White-bellied sea eagle (Haliaeetus leucogaster), Steaming rainforest in Misool, Gam river, Raja Ampat, Western Papua, Indonesian New Guinea, on the Science et Images "Expedition Papua, in the f...

Melvin Grey / Darwin Wallace poison frog (Epipedobates darwinwallacei) adult, Mindo, Ecuador. June

Paul D Stewart / Illustration of Cowslips (Primula veris) from 'Darwinism' by Alfred Wallace 1889. In 1862 Darwin reported how Primula plants have two forms of flowers, pin and thrum eyed, differing in the height and...

Adrian Davies / Wallace's flying frog ( Rhacophorus nigropalmatus) foam nest overhanging pond. Darnum Valley, Sabah, Borneo.

Adrian Davies / Red-sided keelback snake (Xenochrophis trianguligerus) predating foam nest of Wallace's flying tree frog (Rhacophorus nigropalmatus) Danum Valley, Sabah, Borneo.

Tim Laman / Photographer Tim Laman and scientist Edwin Scholes set up to shoot stills and video from a canopy platform at at lek of Wallace's Standardwing Bird of Paradise, North Maluku, eastern Indonesia, July 2...

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at his display site in the rainforest canopy, Halmahera, Indonesia. This species was discovered by and named after Alfred Russel Wall...

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at his display site in the rainforest canopy, Halmahera, Indonesia. This species was discovered by and named after Alfred Russel Wall...

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at his display site in the rainforest canopy in Halmahera, Indonesia.

Tim Laman / Ornate Cuscus (Phalanger ornatus) in the rainforest outside Labilabi, Halmahera, Indonesia. Endemic to North Moluccas (Halmahera, Morotai, and Batjan Islands) Indonesia. This species was discovered b...

Nick Garbutt / Wallace's flying frog (Rhacophorus nigropalmatus) male flying / gliding down from the canopy to temporary pools on the forest floor. Lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Lawas, Sarawak, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Gunung Penrissen, Sarawak, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Gunung Penrissen, Sarawak, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Kubah National Park, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) showing webbed membranes between toes, Kubah National Park, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) showing webbed membranes between toes, Kubah National Park, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) showing webbed membranes between toes, Kubah National Park, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) showing webbed membranes between toes, Kubah National Park, Malaysia

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at his display site in the rainforest canopy, Halmahera, Indonesia.

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at his display site in the rainforest canopy, Halmahera, Indonesia.

Tim Laman / Fisherman in canoes, and village near the entrance to Mayalibit Bay. This is an area of Waigeo Island visited by Alfred Russel Wallace in the 1850's. West Papua, Indonesia, April 2007

Tim Laman / A family at their house in Kabilo Village. This is an area of Waigeo Island visited by Alfred Russel Wallace in the 1850's. West papua, Indonesia, April 2007

Tim Laman / The jetty at Yenbeser Village with people fishing, and a huge school of Trevally (Caranx) below. Alfred Russel Wallace based himself in this village for several months in the 1850's.Raja Ampat Island...

Tim Laman / A pet female Eclectus Parrot (Eclectus roratus) keeps a woman company as she does the washing in Kabilo Village, Mayalibit Bay. This is an area of Waigeo Island visited by Alfred Russel Wallace in the...

Tim Laman / Malaysian naturalist, Saimon Ambi, observes a Wallace's flying frog (Rhacophorus nigropalmatus) on a branch near a pig wallow pool breeding site in the lowland rainforest, Danum Valley Conservation Ar...

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) held in photographer's hand, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) foam nest with eggs above a pig wallow pool in the lowland rainforest of Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) close up of webbing on hind foot, lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) gliding in lowland rainforest with webbed feet fully spread, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) camouflaged on leaf in lowland rainforest, showing webbed feet, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) camouflaged on leaf in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) resting on branch in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) resting on branch in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) resting on branch in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) resting on branch in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) resting on branch in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Stephen Dalton / Wallace's / Abah river flying frog (Rhacophorus nigropalmatus) gliding, controlled conditions, showing use of webbed feet, from Malaysia and Indonesia

Chien Lee / Wallace's Hawk-Eagle (Spizaetus nanus), Lambir Hills National Park, Borneo, Malaysia

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) female visiting the display site of male in rainforest canopy, Labilabi Village vicinity, Halmahera, North Moluccas, Indonesia.

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at display site in rainforest canopy, Halmahera, North Moluccas, Indonesia.

Kirkendall-Spring / Mount Wallace reflecting in Sailor Lake John Muir Wilderness, Inyo National Forest, California, USA

Nick Garbutt / Wallace's gliding frog (Rhacophorus nigropalmatus) in rainforest canopy, Danum Valley, Sabah, Borneo

Nick Garbutt / Wallace's gliding frog (Rhacophorus nigropalmatus) in mid-glide. Danum Valley, Sabah, Borneo

Nick Garbutt / Wallace's gliding frog (Rhacophorus nigropalmatus) on night-time calling perch, branch and leaves. Danum Valley, Sabah, Borneo

Nick Garbutt / Wallace's gliding frog (Rhacophorus nigropalmatus) on night-time calling perch. Danum Valley, Sabah, Borneo

Nick Garbutt / Wallace's flying / gliding Frog {Rhacophorus nigropalmatus} at night congregating and breeding at temporary pool formed after rain, Danum Valley, Sabah, Borneo.

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} perching on understorey vegetation at night, Danum Valley, Sabah, Borneo.

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} climbing back to canopy at night after breeding at temporary pool, Danum Valley, Sabah, Borneo.

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} at night congregating and breeding at temporary pool formed after rain, Danum Valley, Sabah, Borneo.

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} perching on understory vegetation at night, Danum Valley, Sabah, Borneo.

Nick Garbutt / Wallace's flying / gliding frog {Rhacophorus nigropalmatus} on understorey vegetation at night, Danum Valley, Sabah, Borneo.

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Gunung Penrissen, Sarawak, Borneo, Malaysia