| Indochinese box turtle | |
|---|---|
| Northern Vietnamese box turtle Cuora galbinifrons galbinifrons | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Cryptodira |
| Family: | Geoemydidae |
| Genus: | Cuora |
| Species: | C. galbinifrons |
| Binomial name | |
| Cuora galbinifrons Bourret, 1939 | |
| Synonyms[3] | |
| |
TheIndochinese box turtle,Vietnamese box turtle, orflowerback box turtle (Cuora galbinifrons) is aspecies ofAsian box turtles fromChina (Hainan and Guangxi), northern and centralVietnam,Laos, and possibly northeasternCambodia. It is found in high altitude woodland where it tends to hide in the undergrowth. There is considerable confusion as to the taxonomy of this species with several subspecies being recognised by some authorities. and not by others. TheInternational Union for Conservation of Nature has rated its conservation status as "critically endangered".
The northern Vietnamese box turtleC. g. galbinifrons was described by Bourret in 1939, but it took nearly 40 years until the first specimens were imported to Europe and the United States. This subspecies occurs in extreme southernGuangxi Province, China, northern Vietnam, and probably northern Laos and onHainan Island (China). The population from Hainan was once considered to represent a distinct species[4] or at least subspecies,[5]C. (galbinifrons) hainanensis.[6] Li, 1958, was not aware of the description from Bourret (1939) ofC. galbinifrons and thus believed to have a new subspecies ofCuora flavomarginata the onlyCuora species known at this time with at least some similarities. According to some, specimens from Hainan do not always have fully black plastrons (always the case in mainlandC. g. galbinifrons), but sometimes lighter parts. Furthermore, their carapaces show more red pigmentation and brown spots. Genetic and morphologic studies believe it to be a synonym ofC.g. galbinifrons, however.
The central Vietnamese flowerback box turtle (Cuora (galbinifrons) bourreti) occurs in central Vietnam and adjacent Laos, and possibly in northeastern Cambodia. The most notable difference to the nominate race is the distinct plastral pattern, where only smaller black blotches (sometimes none at all) occur.
Described as a subspecies[7] ofC. galbinifrons, genetic studies[8] have shown it to be quite distinct, possibly to the extent of a separate species, i.e.,Cuora bourreti as is the case withCuora picturata,[9] once also considered a subspecies ofC. galbinifrons. However, osteologic studies[10] have shown thatC. g. bourreti probably better remains as a subspecies ofC. galbinifrons. This is also substantiated by the finding of intergradation zones in north-central Vietnam, where hybrid populations ofC. g. galbinifrons andC. g. bourreti are known to exist.[11] The status ofC. picturata is uncertain, while this is the morphologically and phenotypically the most distinct variety, authors[12] treat it as a subspecies ofC. galbinifrons again. Herein, it is treated as a separate but closely related species.
Specimens of at least the northern and central Vietnamesetaxahybridize—apparently in the wild—withkeeled box turtle males to produce the turtles once considered a separate species or subspecies,Cuora serrata.
All populations of Indochinese box turtle are in decline and the conservation situation is made more acute by the diversity of subspecies. Without trying to resolve these taxonomic issues, theInternational Union for Conservation of Nature has rated the conservation status of the species as "critically endangered".[1]