''Dibamus novaeguineae'', is a legless lizard found in the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

, and

Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...

Distribution and habitat

''Dibamus novaeguineae'' exhibits a broad insular distribution across maritime

Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...

. In the

, its range includes several islands in the southern region of the archipelago, notably

Basilan Basilan, officially the Province of Basilan (; ; ; ), is an island province of the Philippines located primarily in the Bangsamoro Autonomous Region. Basilan Island is the largest and northernmost of the major islands of the Sulu Archipelago ...

Cebu Cebu ( ; ), officially the Province of Cebu (; ), is a province of the Philippines located in the Central Visayas region, and consists of a main island and 167 surrounding islands and islets. The coastal zone of Cebu is identified as a ...

Negros Negros (, , ) is the fourth largest and third most populous island in the Philippines, with a total land area of . The coastal zone of the southern part of Negros is identified as a site of highest marine biodiversity importance in the Coral Tr ...

Palawan Palawan (, ), officially the Province of Palawan (; ), is an archipelagic province of the Philippines that is located in the region of Mimaropa. It is the largest province in the country in terms of total area of . The capital and largest c ...

Camiguin Camiguin, officially the Province of Camiguin (; ; Kamigin: ''Probinsya ta Kamigin''), is an island province in the Philippines located in the Bohol Sea, about off the northern coast of mainland Mindanao. It is geographically part of Region ...

, and

Mindanao Mindanao ( ) is the List of islands of the Philippines, second-largest island in the Philippines, after Luzon, and List of islands by population, seventh-most populous island in the world. Located in the southern region of the archipelago, the ...

—where it has been specifically documented on Mount Malindang—as well as the

Sulu Archipelago The Sulu Archipelago ( Tausug: Kapū'-pūan sin Sūg Sulat Sūg: , ) is a chain of islands in the Pacific Ocean, in the southwestern Philippines. The archipelago forms the northern limit of the Celebes Sea and southern limit of the Sulu Se ...

islands of

Tawi-Tawi Tawi-Tawi, officially the Province of Tawi-Tawi ( Tausug: ''Wilaya' sin Tawi-Tawi''; Sinama: ''Jawi Jawi/Jauih Jauih''; ), is an island province in the Philippines located in the Bangsamoro Autonomous Region in Muslim Mindanao (BARMM). The capit ...

, Bongao, Papahag, and Inampulupan. In

, the species is known from the northern, central, and southwestern parts of

Sulawesi Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...

, the Moluccan islands of

Ternate Ternate (), also known as the City of Ternate (; ), is the List of regencies and cities of Indonesia, city with the largest population in the province of North Maluku and an island in the Maluku Islands, Indonesia. It was the ''de facto'' provi ...

Halmahera Halmahera, formerly known as Jilolo, Gilolo, or Jailolo, is the largest island in the Maluku Islands. It is part of the North Maluku Provinces of Indonesia, province of Indonesia, and Sofifi, the capital of the province, is located on the west coa ...

, and Lembeh, and extends eastward into western

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

. ''Dibamus novaeguineae'' is a

fossorial A fossorial animal () is one that is adapted to digging and which lives primarily (but not solely) underground. Examples of fossorial vertebrates are Mole (animal), moles, badgers, naked mole-rats, meerkats, armadillos, wombats, and mole salamand ...

legless lizard, and individuals are typically found under stones, within or beneath rotting logs, and in leaf litter of rainforest floors. This species inhabits a wide range of forested environments, including both primary and secondary rainforest, forest margins, dipterocarp forest, secondary growth forest, wooded grasslands, and agricultural landscapes such as abaca and coconut plantations. It has been recorded at elevations ranging from 15 to 909 meters above sea level. In the Komodo Island, specimens are generally associated with moist forest habitats above 400 meters, though some individuals have been found at lower elevations in

gallery forests A gallery forest is one formed as a corridor along rivers or wetlands, projecting into landscapes that are otherwise only sparsely treed such as savannas, grasslands, or deserts. The gallery forest maintains a more temperate microclimate above th ...

that extend downward as cooler, moist extensions of higher-elevation rainforest.

Description

Specimens of ''Dibamus novaeguineae'' from

Flores Flores is one of the Lesser Sunda Islands, a group of islands in the eastern half of Indonesia. Administratively, it forms the largest island in the East Nusa Tenggara Province. The area is 14,250 km2. Including Komodo and Rinca islands ...

and

Sumbawa Sumbawa, is an Indonesian island, located in the middle of the Lesser Sunda Islands chain, with Lombok to the west, Flores to the east, and Sumba further to the southeast. Along with Lombok, it forms the province of West Nusa Tenggara, but th ...

had 22 midbody scale rows, whereas specimens from

Lombok Lombok, is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east. It is rou ...

exhibited 20–24 scale rows, indicating significant geographic variation. Among specimens collected from Komodo Island, two males had 24 midbody scale rows, while the third male and one female had 22. One male (snout–vent length VL129 mm, tail 21 mm) was uniformly brownish-purple dorsally and ventrally, with only the enlarged head scales and perianal region being slightly lighter. Another male (92 mm SVL, 18 mm tail) had a similar coloration but featured lighter spots on the belly. The third male (86 mm SVL, 13 mm tail) had a few scattered light spots over the body and a pale band around the midsection. The female (132 mm SVL, 16 mm tail) was similarly colored, but the belly was mottled with lighter tones, and two broad bands of this lighter shade encircled the anterior half of the body.

References

Dibamus Reptiles of the Philippines Reptiles of Indonesia Reptiles of Malaysia Reptiles described in 1839 Taxa named by André Marie Constant Duméril Taxa named by Gabriel Bibron Snakes of New Guinea {{lizard-stub