Boiga dendrophila
Encyclopedia
The gold-ringed cat snake or mangrove snake (Boiga dendrophila) is a species of rear-fanged colubrid
. It is one of the biggest cat snake species, averaging 6-8 feet (1.8-2.4 m) in length. It is considered mildy-venom
ous, but moderate envenomations resulting in intense swelling have been reported, though there have been no severe cases of hospitalisation or fatalities.
long; a praeocular extending to the upper surface of the head, not reaching the frontal; two postoculars; temporals 2 + 2
or 2 + 3; eight (nine) upper labials, third to fifth entering the eye; four or five lower labials in contact with the anterior
chin-shields; latter as long as or longer than the posterior; anterior palatine teeth not much larger than the posterior.
Scales in 21 (23) rows, vertebral row enlarged; ventrals 2O9-239; anal entire; subcaudals 89 no. Black above, with yellow transverse bands, continuous or not extending across the back; labials yellow, with black edges. Lower surface black or bluish, uniform or speckled with yellow; throat yellow. Total length 2310 mm.
Mostly nocturnal. It is a very aggressive snake. Even captive bred specimens are too nervous to be handled and will strike repetitively at a distance.
(Bangka
, Belitung
, Borneo
, Java
, Sulawesi
, Riau Archipelago
, Sumatra
), India
,
Peninsular Malaysia
, Singapore
, Thailand
, Vietnam
, Philippine Islands (Panay).
rainforest
s than mangrove swamps
, from which it is named.
Colubrid
A colubrid is a member of the snake family Colubridae. This broad classification of snakes includes about two-thirds of all snake species on earth. The earliest species of the snake family date back to the Oligocene epoch. With 304 genera and 1,938 species, Colubridae is the largest snake family...
. It is one of the biggest cat snake species, averaging 6-8 feet (1.8-2.4 m) in length. It is considered mildy-venom
Venom
Venom is the general term referring to any variety of toxins used by certain types of animals that inject it into their victims by the means of a bite or a sting...
ous, but moderate envenomations resulting in intense swelling have been reported, though there have been no severe cases of hospitalisation or fatalities.
Description
Snout longer than eye; rostral more broad than deep, visible from above; internasals as long as or shorter than the prae-frontals; frontal as long as or slightly shorter than its distance from the tip of the snout; loreal as long as deep or morelong; a praeocular extending to the upper surface of the head, not reaching the frontal; two postoculars; temporals 2 + 2
or 2 + 3; eight (nine) upper labials, third to fifth entering the eye; four or five lower labials in contact with the anterior
chin-shields; latter as long as or longer than the posterior; anterior palatine teeth not much larger than the posterior.
Scales in 21 (23) rows, vertebral row enlarged; ventrals 2O9-239; anal entire; subcaudals 89 no. Black above, with yellow transverse bands, continuous or not extending across the back; labials yellow, with black edges. Lower surface black or bluish, uniform or speckled with yellow; throat yellow. Total length 2310 mm.
Feeding & Behavior
Feeds on small mammals, lizards, frogs, snakes, fish.Mostly nocturnal. It is a very aggressive snake. Even captive bred specimens are too nervous to be handled and will strike repetitively at a distance.
Distribution
IndonesiaIndonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
(Bangka
Bangka
Bangka can refer to:* Bangka Island, an island of Indonesia* Bangka Regency, Indonesia* Bangka Strait, a strait of Indonesia* Bangka language, spoken in Indonesia* Tagalog: bangka, an outrigger canoe* Wanhua District, Taipei City...
, Belitung
Belitung
Belitung, , is an island on the east coast of Sumatra, Indonesia in the Java Sea. The island is known for its pepper and for its tin. It was in the possession of the British from 1812 until the British ceded control of the island to the Dutch in the Anglo-Dutch Treaty of 1824...
, Borneo
Borneo
Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....
, Java
Java
Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...
, Sulawesi
Sulawesi
Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...
, Riau Archipelago
Riau Archipelago
Not to be confused with Riau Islands Province, a province of Indonesia.The Riau Archipelago is the core group of islands within the Riau Islands Province in Indonesia, and located south of Singapore...
, Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...
), India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
,
Peninsular Malaysia
Peninsular Malaysia
Peninsular Malaysia , also known as West Malaysia , is the part of Malaysia which lies on the Malay Peninsula. Its area is . It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the island of Sumatra...
, Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
, Thailand
Thailand
Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...
, Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
, Philippine Islands (Panay).
Subspecies
- Boiga dendrophila occidentalis - IndonesiaIndonesiaIndonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
(BabiBabiBabi may refer to:* Babı, a municipality in Azerbaijan* Babi Dynasty, founded in 1735 by Muhammed Sher Khan Babi , Nawabs of this dynasty went on to rule over Junagadh in Gujarat, from the 18th to the 20th century....
, Batu Archipelago, NiasNiasNīas is an island off the western coast of Sumatra, Indonesia. Nias is also the name of the archipelago, containing the Hinako archipelago....
, SumatraSumatraSumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...
) - Boiga dendrophila annectens - IndonesiaIndonesiaIndonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
(Kalimantan); Brunei Darussalam; East MalaysiaEast MalaysiaEast Malaysia, also known as Malaysian Borneo, is the part of Malaysia located on the island of Borneo. It consists of the Malaysian states of Sabah and Sarawak, and the Federal Territory of Labuan. It lies to the east from Peninsular Malaysia , which is located on the Malay Peninsula. The two are... - Boiga dendrophila dendrophila - IndonesiaIndonesiaIndonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
(JavaJavaJava is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...
); BorneoBorneoBorneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....
. - Boiga dendrophila divergens - Philippine Islands (LuzonLuzonLuzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
, Polillo) - Boiga dendrophila gemmicincta - IndonesiaIndonesiaIndonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
(SulawesiSulawesiSulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...
). - Boiga dendrophila latifasciata - Philippine Islands (MindanaoMindanaoMindanao is the second largest and easternmost island in the Philippines. It is also the name of one of the three island groups in the country, which consists of the island of Mindanao and smaller surrounding islands. The other two are Luzon and the Visayas. The island of Mindanao is called The...
) - Boiga dendrophila levitoni - Panay (and probably other islands of the West VisayasVisayasThe Visayas or Visayan Islands and locally known as Kabisay-an gid, is one of the three principal geographical divisions of the Philippines, along with Mindanao and Luzon. It consists of several islands, primarily surrounding the Visayan Sea, although the Visayas are considered the northeast...
region) - Boiga dendrophila melanota: S ThailandThailandThailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...
, West Malaysia, SingaporeSingaporeSingapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
, IndonesiaIndonesiaIndonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
(SumatraSumatraSumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...
) - Boiga dendrophila multicincta: Philippine Islands (Balabac, PalawanPalawanPalawan is an island province of the Philippines located in the MIMAROPA region or Region 4. Its capital is Puerto Princesa City, and it is the largest province in the country in terms of total area of jurisdiction. The islands of Palawan stretch from Mindoro in the northeast to Borneo in the...
)
Habitat
Ironically, the mangrove snake is found more often in lowlandLowland
In physical geography, a lowland is any broad expanse of land with a general low level. The term is thus applied to the landward portion of the upward slope from oceanic depths to continental highlands, to a region of depression in the interior of a mountainous region, to a plain of denudation, or...
rainforest
Rainforest
Rainforests are forests characterized by high rainfall, with definitions based on a minimum normal annual rainfall of 1750-2000 mm...
s than mangrove swamps
Mangrove
Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics – mainly between latitudes N and S...
, from which it is named.