Spiny turtle

Spiny turtle

Conservation status
Endangered (IUCN 2.3)^[1]^[2]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Order:	Testudines
Suborder:	Cryptodira
Superfamily:	Testudinoidea
Family:	Geoemydidae
Genus:	Heosemys
Species:	H. spinosa
Binomial name
*Heosemys spinosa* Gray, 1830^[1]
Synonyms^[3]
Emys spinosae Gray, 1830 Geoemyda spinosa Gray, 1834 Clemmys (Clemmys) spinosa Fitzinger, 1835 Heosemys spinosa Stejneger, 1902

The spiny turtle (Heosemys spinosa) inhabits lowland and hill rainforest, usually in the vicinity of small streams, mainly in hill areas up to 900 m above sea level.

Description

Carapace

The origin of its common and specific name is immediately apparent from the sharp, pointed, spiky-edged carapace, and spiny keel, of this unique turtle, also known as the ‘cog-wheel turtle'.

Distribution

The spiny turtle is known from Brunei, Indonesia, Malaysia, Myanmar, the Philippines, Singapore, and Thailand.^[1]

Reproduction

Mating behaviour appears to be triggered by rain; in captivity, spraying males with water results in them chasing females and attempting to mount. Nothing is known of nesting behaviour in the wild. One, two, or rarely three eggs are laid per clutch; in captivity, laying usually occurs in the night or early morning. Females produce up to three clutches per year. A plastron hinge develops to ease laying. It has been bred in captivity several times; in three cases the incubation time was 106, 110, and 145 days.^[4]

References

1 2 3 Rhodin 2011, p. 000.190
↑ Asian Turtle Trade Working Group (2000). "Heosemys spinosa". IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature. Retrieved 29 May 2012.
↑ Fritz, Uwe; Peter Havaš (2007). "Checklist of Chelonians of the World". Vertebrate Zoology. 57 (2): 224–225. ISSN 1864-5755. Archived from the original (PDF) on 2010-12-17. Retrieved 29 May 2012.
↑ http://www.torontozoo.com/ExploretheZoo/AnimalDetails.asp?pg=694

Bibliography

Rhodin, Anders G.J.; van Dijk; Peter Paul; Inverson, John B.; Shaffer, H. Bradley; Roger, Bour (2011-12-31). "Turtles of the world, 2011 update: Annotated checklist of taxonomy, synonymy, distribution and conservation status". Chelonian Research Monographs. 5. Archived from the original (PDF) on 2012-01-22.
Fritz, Uwe; Havaš, Peter (2007). "Checklist of Chelonians of the World". Vertebrate Zoology. 57 (2). Archived from the original (PDF) on 2010-12-17.

External links

ARKive - images and movies of the spiny turtle (Heosemys spinosa)

Turtle family Geoemydidae

Genus	Species of the family Geoemydidae

Batagur	Burmese roofed turtle Northern river terrapin Painted terrapin Red-crowned roofed turtle Southern river terrapin Three-striped roofed turtle

Cuora	Amboina box turtle Bourret's box turtle Indochinese box turtle McCord's box turtle Keeled box turtle Pan's box turtle Southern Vietnamese box turtle Chinese three-striped box turtle Yellow-headed box turtle Yellow-margined box turtle Yunnan box turtle Zhou's box turtle

Cyclemys	Asian leaf turtle Assam leaf turtle Eastern black-bridged leaf turtle Enigmatic leaf turtle Myanmar brown leaf turtle Oldham's leaf turtle Western black-bridged leaf turtle

Geoclemys	Black pond turtle

Geoemyda	Black-breasted leaf turtle Ryukyu black-breasted leaf turtle

Hardella	Brahminy river turtle

Heosemys	Arakan forest turtle Giant Asian pond turtle Spiny turtle Yellow-headed temple turtle

Leucocephalon	Sulawesi forest turtle

Malayemys	Malayan snail-eating turtle Mekong snail-eating turtle

Mauremys	Balkan pond turtle Caspian turtle Chinese pond turtle Chinese stripe-necked turtle Japanese pond turtle Red-necked pond turtle Spanish pond turtle Vietnamese pond turtle Yellow pond turtle

Melanochelys	Indian black turtle Tricarinate hill turtle

Morenia	Burmese eyed turtle Indian eyed turtle

Notochelys	Malayan flat-shelled turtle

Orlitia	Malaysian giant turtle

Pangshura	Assam roofed turtle Brown roofed turtle Indian roofed turtle Indian tent turtle

Rhinoclemmys	Black river turtle Brown wood turtle Colombian wood turtle Furrowed wood turtle Large-nosed wood turtle Maracaibo wood turtle Mexican spotted wood turtle Painted wood turtle Spot-legged turtle

Sacalia	Beal's eyed turtle Four-eyed turtle

Siebenrockiella	Black marsh turtle Philippine forest turtle

Vijayachelys	Cane turtle

Phylogenetic arrangement based on turtles of the world 2011 update: annotated checklist.

Extant turtle taxonomy

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Subclass: Anapsida
Order: Chelonii or Testudines

Suborder

Superfamily

Family

Subfamily	Genus

Cryptodira

Chelydridae

	Chelydra Macrochelys

Chelonioidea

Cheloniidae

Carettinae	Caretta Lepidochelys

Cheloniinae	Chelonia Eretmochelys Natator

Dermochelyidae

	Dermochelys

Kinosternoidea

Dermatemydidae

	Dermatemys

Kinosternidae

Kinosterninae	Kinosternon Sternotherus

Staurotypinae	Claudius Staurotypus

Testudinoidea

Emydidae

Deirochelyinae	Chrysemys Deirochelys Graptemys Malaclemys Pseudemys Trachemys

Emydinae	Clemmys Emys Glyptemys Terrapene

Geoemydidae

Geoemydinae	Batagur Cuora Cyclemys Geoclemys Geoemyda Hardella Heosemys Leucocephalon Malayemys Mauremys Melanochelys Morenia Notochelys Orlitia Pangshura Sacalia Siebenrockiella Vijayachelys

Rhinoclemmydinae	Rhinoclemmys

Platysternidae

	Platysternon

Testudinidae

	Aldabrachelys Astrochelys Chelonoidis Chersina Cylindraspis Geochelone Gopherus Homopus Indotestudo Kinixys Malacochersus Manouria Psammobates Pyxis Stigmochelys Testudo

Trionychia

Carettochelyidae

	Carettochelys

Trionychidae

Cyclanorbinae	Cyclanorbis Cycloderma Lissemys

Trionychinae	Amyda Apalone Chitra Dogania Nilssonia Palea Pelochelys Pelodiscus Rafetus Trionyx

Pleurodira

Chelidae

Chelinae	Acanthochelys Chelus Mesoclemmys Phrynops Platemys Rhinemys

Chelodininae	Chelodina Elseya Elusor Emydura Flaviemys Myuchelys Pseudemydura Rheodytes

Hydromedusinae	Hydromedusa

Pelomedusidae

	Pelomedusa Pelusios

Podocnemididae

	Erymnochelys Peltocephalus Podocnemis

Phylogenetic arrangement based on turtles of the world 2012 update: annotated checklist. Extinct turtles not included.

Portal Book See also List of Testudines families

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