The clade Afrosoricida (a Latin-Greek compound name which means "looking like African shrews") contains the of Southern Africa, the of equatorial Africa and the of Madagascar. These three groups of small were for most of the 19th and 20th centuries regarded as a part of the Insectivora or Lipotyphla, but both of those groups, as traditionally used, are polyphyletic.
Naming
Some biologists use
Tenrecoidea or
Tenrecomorpha as the name for the tenrec-golden mole
clade and regard
Afrosoricida as a junior synonym (even though the rules of the
ICZN do not apply above the Linnean rank of family). This is based on the principles of Simpson,
summarized by Asher & Helgen
to mean that "priority and stability should comprise the overriding principles by which new, high-level taxa are named. Established names for any given clade should not be altered unless the name with precedent unambiguously threatens stability." When "Afrosoricida" was first named in 1998,
Afrosorex was a subgenus of
Crocidura and McDowell
had used the name
Tenrecoidea for the same clade of golden moles and tenrecs. Gary Bronner and Paula Jenkins referred to "Afrosoricida" in their chapter in Wilson & Reeder
as "... inappropriate since this clade does not include soricids, and could lead to confusion with the soricid subgenus
Afrosorex" but still kept it due to their perception that the name was "entrenched in the recent literature" and because of the admittedly confusing history of terms like Tenrecoidea and Tenrecomorpha.
Asher & Helgen
[ presented their views on the appropriateness of these and other high-level taxa, including a response]
Biology
As a rule, tenrecs and otter shrews tend to be small animals varying from 4 cm to 39 cm in length. There is no pronounced body type since they have evolved to occupy a number of small-bodied, faunivorous niches in Madagascar (tenrecines) and mainland Africa (potamogalines). However, certain species bear some ecological similarity to hedgehogs, soricid shrews, or miniature . Their coat can vary from smooth to spiny and the coloration of the fur can also vary from brown, gray, to other hues (see for example photos on the ASM library
Unusual among , afrosoricids have a cloaca, which is the rear orifice that functions as the opening for the urination, digestive, and reproductive tracts.
Phylogeny
Traditionally, these two families were grouped with the , and moles in the Lipotyphla. However, there have always been minority opinions suggesting that Tenrecoidea, or at least the golden moles, are not true lipotyphlans. For example, Robert Broom wrote in 1916[
]
that "examination of the skull confirms ... that Chrysochloris is not a near ally of Centetes" (i.e., Tenrec ecaudatus) "and that it is not an Insectivore". These opinions are now supported by many genetic studies indicating an association between tenrecoids and various other African mammals in the Afrotheria.[
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Tenrecs and golden moles are sometimes considered part of the Afroinsectiphilia, a clade within Afrotheria.
Cladogram of living Afrosoricida
The generally accepted cladogram of living Afrosoricida is:[
]
Species
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Infraclass Eutheria: placental mammals
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Superorder Afrotheria
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Clade Afroinsectiphilia
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Clade Afroinsectivora
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Order Afrosoricida
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Suborder Tenrecomorpha (otter shrews and tenrecs)
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Family Potamogalidae ()
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Genus Micropotamogale
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Nimba otter shrew ( Micropotamogale lamottei)
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Ruwenzori otter shrew ( Micropotamogale ruwenzorii)
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Genus Potamogale
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Family Plesiorycteropodidae
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Genus † Plesiorycteropus
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† Plesiorycteropus madagascariensis
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† Plesiorycteropus germainepetterae
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Family Tenrecidae ()
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Subfamily Geogalinae (1 species)
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Subfamily Oryzorictinae (24 species)
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Genus Microgale
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Short-tailed shrew tenrec ( Microgale brevicaudata)
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Cowan's shrew tenrec ( Microgale cowani)
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Drouhard's shrew tenrec ( Microgale drouhardi)
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Dryad shrew tenrec ( Microgale dryas)
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Pale shrew tenrec ( Microgale fotsifotsy)
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Gracile shrew tenrec ( Microgale gracilis)
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Naked-nosed shrew tenrec ( Microgale gymnorhyncha)
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Jenkins's shrew tenrec ( Microgale jenkinsae)
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Northern shrew tenrec ( Microgale jobihely)
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Lesser long-tailed shrew tenrec ( Microgale longicaudata)
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Major's long-tailed tenrec ( Microgale majori)
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Web-footed tenrec ( Microgale mergulus)
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Montane shrew tenrec ( Microgale monticola)
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Nasolo's shrew tenrec ( Microgale nasoloi)
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Pygmy shrew tenrec ( Microgale parvula)
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Greater long-tailed shrew tenrec ( Microgale principula)
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Least shrew tenrec ( Microgale pusilla)
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Shrew-toothed shrew tenrec ( Microgale soricoides)
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Taiva shrew tenrec ( Microgale taiva)
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Thomas's shrew tenrec ( Microgale thomasi)
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Subgenus Nesogale
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Dobson's shrew tenrec ( Nesogale dobsoni)
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Talazac's shrew tenrec ( Nesogale talazaci)
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Genus Oryzorictes
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Mole-like rice tenrec ( Oryzorictes hova)
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Four-toed rice tenrec ( Oryzorictes tetradactylus)
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Subfamily Tenrecinae (5 species)
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Tribe Setiferini
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Genus Echinops
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Lesser hedgehog tenrec ( Echinops telfairi)
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Genus Setifer
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Tribe Tenrecini
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Genus Hemicentetes
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Highland streaked tenrec ( Hemicentetes nigriceps)
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Lowland streaked tenrec ( Hemicentetes semispinosus)
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Genus Tenrec
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Suborder Chrysochloridea ()
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Family Chrysochloridae (golden moles)
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Subfamily Chrysochlorinae (11 species)
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Genus Carpitalpa
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Arends' golden mole ( Carpitalpa arendsi)
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Genus Chlorotalpa
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Duthie's golden mole ( Chlorotalpa duthieae)
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Sclater's golden mole ( Chlorotalpa sclateri)
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Genus Chrysochloris
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Subgenus Chrysochloris
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Cape golden mole ( Chrysochloris asiatica)
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Visagie's golden mole ( Chrysochloris visagiei)
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Subgenus Kilimatalpa
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Stuhlmann's golden mole ( Chrysochloris stuhlmanni)
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Genus Chrysospalax
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Giant golden mole ( Chrysospalax trevelyani)
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Rough-haired golden mole ( Chrysospalax villosus)
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Genus Cryptochloris
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De Winton's golden mole ( Cryptochloris wintoni)
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Van Zyl's golden mole ( Cryptochloris zyli)
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Genus Eremitalpa
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Grant's golden mole ( Eremitalpa granti)
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Subfamily Amblysominae (10 species)
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Genus Amblysomus
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Fynbos golden mole ( Amblysomus corriae)
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Hottentot golden mole ( Amblysomus hottentotus)
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Marley's golden mole ( Amblysomus marleyi)
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Robust golden mole ( Amblysomus robustus)
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Highveld golden mole ( Amblysomus septentrionalis)
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Genus Calcochloris
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Subgenus Huetia
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Congo golden mole ( Calcochloris leucorhinus)
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Subgenus Calcochloris
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Yellow golden mole ( Calcochloris obtusirostris)
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Subgenus incertae sedis
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Somali golden mole ( Calcochloris tytonis)
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Genus Neamblysomus
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Juliana's golden mole ( Neamblysomus julianae)
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Gunning's golden mole ( Neamblysomus gunningi)
See also
