Harman Patil (Editor)

Insectivora

Updated on
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Covid-19
Insectivora Palaeos Vertebrates Insectivora Overview

Constantines insectivora


The order Insectivora (from Latin insectum "insect" and vorare "to eat") is a now-abandoned biological grouping within the class of mammals. Some species have now been moved out, leaving the remaining ones in the order Eulipotyphla, within the larger clade Laurasiatheria, which makes up one of the most basic clades of placental mammals.

Contents

Insectivora tolweborgtreeToLimages990519877328b57217o25

Infra insectivora


History

Insectivora Insectivora

In the past, the grouping was used as a wastebasket taxon for a variety of small to very small, relatively unspecialised, insectivorous mammals. Since any primitive-looking fossil group of placental mammals was commonly assigned to this order for convenience, it was held to constitute the basal stock out of which other placental orders had evolved. Therefore, at its widest extent, the order Insectivora represented an evolutionary grade rather than a clade.

Insectivora Palaeos Vertebrates Insectivora Soricomorpha

Taxonomy has been refined in recent years, and treeshrews, elephant shrews, and colugos have now been placed in separate orders, as have many fossil groups that were formerly included here. For some time it was held that the remaining insectivoran families constituted a monophyletic grouping, or clade, to which the name Lipotyphla had long been applied. However, molecular evidence indicated that Chrysochloridae (golden moles) and Tenrecidae (tenrecs) should also be separated as a new order Afrosoricida.

Insectivora North American Mammals Insectivora

Erinaceidae (hedgehogs) was then also split off into a separate order (Erinaceomorpha) from the remainder (termed Soricomorpha), comprising the families Soricidae (shrews), Talpidae (moles), Solenodontidae, and Nesophontidae. These two orders then replaced Insectivora. This scheme was undermined when molecular studies indicated that Soricomorpha is paraphyletic, because Soricidae shared a more recent common ancestor with Erinaceidae than with other soricomorphs.

However, the combination of Soricidae and Erinaceidae, referred to as order Eulipotyphla, has been shown to be monophyletic.

Classification

  • ORDER EULIPOTYPHLA (remnant of 'Insectivora')
  • Family Erinaceidae
  • Subfamily Erinaceinae: hedgehogs
  • Subfamily Hylomyinae: moonrats and gymnures
  • Family Soricidae
  • Subfamily Crocidurinae: white-toothed shrews
  • Subfamily Soricinae: red-toothed shrews
  • Subfamily Myosoricinae: African white-toothed shrews
  • Family Talpidae
  • Subfamily Desmaninae: desmans
  • Subfamily Talpinae: moles
  • Subfamily Uropsilinae: shrew moles
  • Family Solenodontidae: solenodons
  • Family Nesophontidae: extinct West Indian shrews
  • Family-level cladogram of extant insectivoran relationships, following Roca et al.:


    These families have been placed within Insectivora in the past:

  • Family Chrysochloridae (golden moles)
  • Family Tenrecidae (tenrecs)
  • Family Macroscelididae (elephant shrews)
  • Family Tupaiidae (treeshrews)
  • Family Cynocephalidae (colugos)
  • Not to be confused with insectivores (the eaters of insects considered as a feeding behavior), many of which do not belong to Eulipotyphla or the other taxa formerly included within Insectivora.

    References

    Insectivora Wikipedia


    Similar Topics
    All Is Bright
    Espen Berg (musician)
    Justine Pelmelay
    Topics
     
    B
    i
    Link
    H2
    L