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43-492: 53 species; see text Phelsuma is a large genus of geckos in the family Gekkonidae . Species in the genus Phelsuma are commonly referred to as day geckos . Some day geckos are seriously endangered and some are common, but all Phelsuma species are CITES Appendix II listed. Little is known about trade in day geckos, but the IUCN considers it a threat to some species. Some species are captive-bred. The genus itself

86-651: A later homonym of a validly published name is a nomen illegitimum or nom. illeg. ; for a full list refer to the International Code of Nomenclature for algae, fungi, and plants and the work cited above by Hawksworth, 2010. In place of the "valid taxon" in zoology, the nearest equivalent in botany is " correct name " or "current name" which can, again, differ or change with alternative taxonomic treatments or new information that results in previously accepted genera being combined or split. Prokaryote and virus codes of nomenclature also exist which serve as

129-628: A long time and redescribed as new by a range of subsequent workers, or if a range of genera previously considered separate taxa have subsequently been consolidated into one. For example, the World Register of Marine Species presently lists 8 genus-level synonyms for the sperm whale genus Physeter Linnaeus, 1758, and 13 for the bivalve genus Pecten O.F. Müller, 1776. Within the same kingdom, one generic name can apply to one genus only. However, many names have been assigned (usually unintentionally) to two or more different genera. For example,

172-409: A reference for designating currently accepted genus names as opposed to others which may be either reduced to synonymy, or, in the case of prokaryotes, relegated to a status of "names without standing in prokaryotic nomenclature". An available (zoological) or validly published (botanical) name that has been historically applied to a genus but is not regarded as the accepted (current/valid) name for

215-427: A taxon; however, the names published in suppressed works are made unavailable via the relevant Opinion dealing with the work in question. In botany, similar concepts exist but with different labels. The botanical equivalent of zoology's "available name" is a validly published name . An invalidly published name is a nomen invalidum or nom. inval. ; a rejected name is a nomen rejiciendum or nom. rej. ;

258-455: A total of c. 520,000 published names (including synonyms) as at end 2019, increasing at some 2,500 published generic names per year. "Official" registers of taxon names at all ranks, including genera, exist for a few groups only such as viruses and prokaryotes, while for others there are compendia with no "official" standing such as Index Fungorum for fungi, Index Nominum Algarum and AlgaeBase for algae, Index Nominum Genericorum and

301-426: Is a huge difference in temperature between night and day, and between different seasons. The maximum day temperature is 30 °C (86 °F). At night, it is cool and foggy. P. barbouri feeds on various insects and other invertebrates . P. barbouri often lives in small groups. During the day, it flattens its body to catch as much sun as possible. This way it can reach its preferred body temperature. During

344-413: Is a terrestrial species. Day geckos feed on various insects and other invertebrates in the wild. They also eat nectar, pollen, and occasionally soft, ripe and sweet fruits such as bananas. In captivity, such a diet is simulated. Insects which may be used include: (wingless) fruit flies , various flies , wax moths , crickets , small super worms , small butter worms and mealworms . Fruit, which

387-612: Is discouraged by both the International Code of Zoological Nomenclature and the International Code of Nomenclature for algae, fungi, and plants , there are some five thousand such names in use in more than one kingdom. For instance, A list of generic homonyms (with their authorities), including both available (validly published) and selected unavailable names, has been compiled by the Interim Register of Marine and Nonmarine Genera (IRMNG). The type genus forms

430-680: Is required a few times a week, may be small pieces of papaya , banana , or other sweet fruit and also commercial gecko nectars. In 2008 a BBC film crew took footage of a day gecko successfully begging a planthopper for honeydew. The genus Phelsuma was first described in 1825 by the British zoologist John Edward Gray , who named it after the Dutch physician Murk van Phelsum . The genus consists of about 70 known species and subspecies . Two Phelsuma species ( Phelsuma gigas and Phelsuma edwardnewtoni ), both of which were endemic to

473-460: Is somewhat arbitrary. Although all species within a genus are supposed to be "similar", there are no objective criteria for grouping species into genera. There is much debate among zoologists about whether enormous, species-rich genera should be maintained, as it is extremely difficult to come up with identification keys or even character sets that distinguish all species. Hence, many taxonomists argue in favor of breaking down large genera. For instance,

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516-474: Is the type species , and the generic name is permanently associated with the type specimen of its type species. Should the specimen turn out to be assignable to another genus, the generic name linked to it becomes a junior synonym and the remaining taxa in the former genus need to be reassessed. In zoological usage, taxonomic names, including those of genera, are classified as "available" or "unavailable". Available names are those published in accordance with

559-539: Is thought to have originated anywhere between the Late Cretaceous to the mid- Eocene (43 to 75 mya), as that is when its lineage is known to have diverged from the one containing the Namaqua day gecko ( Rhoptropella ), although it is unknown how closely related both genera are. The crown group containing all recent species is thought to have originated in the early Oligocene , about 30 million years ago, with

602-493: Is unicoloured green and slightly flattened. P. barbouri inhabits the highlands of central Madagascar in the Ankaratra Mountains, at altitudes of 1,600–2,640 m (5,250–8,660 ft). In contrast to other lizards of the genus Phelsuma , P. barbouri is terrestrial and typically lives on stones on the ground or on rocks in savanna habitat . The climate of its habitat is extremely harsh. There

645-621: The International Code of Zoological Nomenclature ; the earliest such name for any taxon (for example, a genus) should then be selected as the " valid " (i.e., current or accepted) name for the taxon in question. Consequently, there will be more available names than valid names at any point in time; which names are currently in use depending on the judgement of taxonomists in either combining taxa described under multiple names, or splitting taxa which may bring available names previously treated as synonyms back into use. "Unavailable" names in zoology comprise names that either were not published according to

688-824: The International Plant Names Index for plants in general, and ferns through angiosperms, respectively, and Nomenclator Zoologicus and the Index to Organism Names for zoological names. Totals for both "all names" and estimates for "accepted names" as held in the Interim Register of Marine and Nonmarine Genera (IRMNG) are broken down further in the publication by Rees et al., 2020 cited above. The accepted names estimates are as follows, broken down by kingdom: The cited ranges of uncertainty arise because IRMNG lists "uncertain" names (not researched therein) in addition to known "accepted" names;

731-507: The Mascarene island of Rodrigues , are now considered to be extinct , probably due to the destruction of their environments by human settlers and their domestic animals. Many day gecko species are endangered today for similar reasons: an increasing percentage of their natural habitat, especially tropical forest, is being destroyed by human activity. Nota bene : A binomial authority or trinomial authority in parentheses indicates that

774-745: The Mascarenes , Seychelles , and Comoros . Due to human introduction, they are also often found on some of the Hawaiian Islands , including the Big Island , Maui and Kauai , and the state of Florida , where they were introduced as a form of pest control. The different Phelsuma species can be found from sea level up to 2,300 meters. Most day geckos are arboreal. They inhabit, amongst others, coconut palms and banana trees, but can also be found near human settlements, in gardens, on fences, houses, and huts. An exception, Phelsuma barbouri ,

817-419: The nomenclature codes , which allow each species a single unique name that, for animals (including protists ), plants (also including algae and fungi ) and prokaryotes ( bacteria and archaea ), is Latin and binomial in form; this contrasts with common or vernacular names , which are non-standardized, can be non-unique, and typically also vary by country and language of usage. Except for viruses ,

860-404: The platypus belongs to the genus Ornithorhynchus although George Shaw named it Platypus in 1799 (these two names are thus synonyms ) . However, the name Platypus had already been given to a group of ambrosia beetles by Johann Friedrich Wilhelm Herbst in 1793. A name that means two different things is a homonym . Since beetles and platypuses are both members of the kingdom Animalia,

903-442: The base for higher taxonomic ranks, such as the family name Canidae ("Canids") based on Canis . However, this does not typically ascend more than one or two levels: the order to which dogs and wolves belong is Carnivora ("Carnivores"). The numbers of either accepted, or all published genus names is not known precisely; Rees et al., 2020 estimate that approximately 310,000 accepted names (valid taxa) may exist, out of

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946-417: The common name, Barbour's day gecko, are in honor of American herpetologist Thomas Barbour . P. barbouri is a middle-sized day gecko. It can reach a total length (including tail) of about 13.5 cm (5.3 in). The body colour is brownish green or dark green. Both a dark brown dorso-lateral stripe and a dark brown lateral stripe extend from head to tail. The extremities are normally brown. The tail

989-498: The day. Other diurnal geckos include species of the genera Lygodactylus and Gonatodes . Like most other geckos, day geckos lack eyelids, instead having rounded pupils and a clear, fixed plate covering their eyes which they clean with their tongues. Many species have bright green, red, and blue colors which make them popular terrarium or vivarium pets. These brilliant colors play a role in intraspecies recognition and also serve as camouflage. The total length (including tail) of

1032-546: The different Phelsuma species varies between about 6.5 and 30 centimetres (2.6 and 11.8 in), but the extinct Rodrigues giant day gecko was even larger. Day geckos have toe pads consisting of tiny lamellae which allow them to walk on plain vertical and inverted surfaces like bamboo or glass. The inner toe on each foot is vestigial . Males have well-developed femoral pores on the undersurface of their rear limbs. These pores are less developed or absent in females. Females often have well-developed endolymphatic chalk sacs on

1075-446: The form "author, year" in zoology, and "standard abbreviated author name" in botany. Thus in the examples above, the genus Canis would be cited in full as " Canis Linnaeus, 1758" (zoological usage), while Hibiscus , also first established by Linnaeus but in 1753, is simply " Hibiscus L." (botanical usage). Each genus should have a designated type , although in practice there is a backlog of older names without one. In zoology, this

1118-737: The generic name (or its abbreviated form) still forms the leading portion of the scientific name, for example, Canis lupus lupus for the Eurasian wolf subspecies, or as a botanical example, Hibiscus arnottianus ssp. immaculatus . Also, as visible in the above examples, the Latinised portions of the scientific names of genera and their included species (and infraspecies, where applicable) are, by convention, written in italics . The scientific names of virus species are descriptive, not binomial in form, and may or may not incorporate an indication of their containing genus; for example,

1161-711: The islands of the south-west part of the Indian Ocean . The exceptions are Phelsuma andamanense , which is endemic to the Andaman Islands in the Bay of Bengal , and Phelsuma dubia , which is also found on the East Coast of mainland Africa, although it possibly was introduced there. Most Phelsumas species are found in Mauritius and Madagascar . Some species are found on neighboring island groups, including

1204-633: The largest component, with 23,236 ± 5,379 accepted genus names, of which 20,845 ± 4,494 are angiosperms (superclass Angiospermae). By comparison, the 2018 annual edition of the Catalogue of Life (estimated >90% complete, for extant species in the main) contains currently 175,363 "accepted" genus names for 1,744,204 living and 59,284 extinct species, also including genus names only (no species) for some groups. The number of species in genera varies considerably among taxonomic groups. For instance, among (non-avian) reptiles , which have about 1180 genera,

1247-498: The lizard genus Anolis has been suggested to be broken down into 8 or so different genera which would bring its ~400 species to smaller, more manageable subsets. Phelsuma barbouri Barbour's day gecko ( Phelsuma barbouri ) is a species of lizard in the family Gekkonidae . The species is endemic to central Madagascar . It is diurnal and typically dwells on rocks. Barbour's day gecko feeds on insects and nectar . The specific name , barbouri , as well as

1290-403: The most (>300) have only 1 species, ~360 have between 2 and 4 species, 260 have 5–10 species, ~200 have 11–50 species, and only 27 genera have more than 50 species. However, some insect genera such as the bee genera Lasioglossum and Andrena have over 1000 species each. The largest flowering plant genus, Astragalus , contains over 3,000 species. Which species are assigned to a genus

1333-602: The most basal of them being the isolated Andaman day gecko ( P. andamanensis ), which diverged from all other species shortly after the crown group originated. Most of the other divergence among species in areas of the Western Indian Ocean such as the Seychelles is thought to have occurred in the Neogene . In contrast to most other gecko species, day geckos of the genus Phelsuma are active mainly during

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1376-428: The name could not be used for both. Johann Friedrich Blumenbach published the replacement name Ornithorhynchus in 1800. However, a genus in one kingdom is allowed to bear a scientific name that is in use as a generic name (or the name of a taxon in another rank) in a kingdom that is governed by a different nomenclature code. Names with the same form but applying to different taxa are called "homonyms". Although this

1419-502: The night and in the early morning, P. barbouri has a dark colour. However, when it is basking, the body colour becomes brighter. Adult females of P. barbouri glue their eggs under stones. Since additional females may deposit their eggs at the same location, as many as 50 eggs may be found together. At a temperature of 28 °C (82 °F), the young will hatch after approximately 55 days. The neonates measure 32 mm (1.3 in). P. barbouri should be housed in pairs and needs

1462-541: The provisions of the ICZN Code, e.g., incorrect original or subsequent spellings, names published only in a thesis, and generic names published after 1930 with no type species indicated. According to "Glossary" section of the zoological Code, suppressed names (per published "Opinions" of the International Commission of Zoological Nomenclature) remain available but cannot be used as the valid name for

1505-470: The same kind as other (analogous) genera. The term "genus" comes from Latin genus , a noun form cognate with gignere ('to bear; to give birth to'). The Swedish taxonomist Carl Linnaeus popularized its use in his 1753 Species Plantarum , but the French botanist Joseph Pitton de Tournefort (1656–1708) is considered "the founder of the modern concept of genera". The scientific name (or

1548-408: The scientific epithet) of a genus is also called the generic name ; in modern style guides and science, it is always capitalised. It plays a fundamental role in binomial nomenclature , the system of naming organisms , where it is combined with the scientific name of a species : see Botanical name and Specific name (zoology) . The rules for the scientific names of organisms are laid down in

1591-412: The sides of their necks. These sacs store calcium, which is needed for egg production. Those eggs can often be seen through the ventral surface of the female's body shortly before they are laid. The hatchlings reach sexual maturity between six and 12 months old. Smaller species may live up to 10 years, whereas the larger species have been reported to live more than 20 years in captivity. Day geckos inhabit

1634-539: The species or subspecies was originally described in a genus other than Phelsuma . Genus The composition of a genus is determined by taxonomists . The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: Moreover, genera should be composed of phylogenetic units of

1677-497: The specific name particular to the wolf. A botanical example would be Hibiscus arnottianus , a particular species of the genus Hibiscus native to Hawaii. The specific name is written in lower-case and may be followed by subspecies names in zoology or a variety of infraspecific names in botany . When the generic name is already known from context, it may be shortened to its initial letter, for example, C. lupus in place of Canis lupus . Where species are further subdivided,

1720-412: The standard format for a species name comprises the generic name, indicating the genus to which the species belongs, followed by the specific epithet, which (within that genus) is unique to the species. For example, the gray wolf 's scientific name is Canis lupus , with Canis ( Latin for 'dog') being the generic name shared by the wolf's close relatives and lupus (Latin for 'wolf') being

1763-403: The taxon is termed a synonym ; some authors also include unavailable names in lists of synonyms as well as available names, such as misspellings, names previously published without fulfilling all of the requirements of the relevant nomenclatural code, and rejected or suppressed names. A particular genus name may have zero to many synonyms, the latter case generally if the genus has been known for

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1806-576: The values quoted are the mean of "accepted" names alone (all "uncertain" names treated as unaccepted) and "accepted + uncertain" names (all "uncertain" names treated as accepted), with the associated range of uncertainty indicating these two extremes. Within Animalia, the largest phylum is Arthropoda , with 151,697 ± 33,160 accepted genus names, of which 114,387 ± 27,654 are insects (class Insecta). Within Plantae, Tracheophyta (vascular plants) make up

1849-429: The virus species " Salmonid herpesvirus 1 ", " Salmonid herpesvirus 2 " and " Salmonid herpesvirus 3 " are all within the genus Salmonivirus ; however, the genus to which the species with the formal names " Everglades virus " and " Ross River virus " are assigned is Alphavirus . As with scientific names at other ranks, in all groups other than viruses, names of genera may be cited with their authorities, typically in

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