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Insectivores-Dermoptera
Afrosoricida, Erinaceomorph Soricomorpha, Macroscelidea, Scandentia, and Dermoptera
24
Biology
12th Grade
03/01/2011

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Term
Afrosoricida
Definition
Golden moles, tenrecs
Term
Erinaceomorpha
Definition
Hedgehogs and gymnures
Term
Soricamorpha
Definition
Solenodons, shrews, moles, and desmans
Term
Macroscelidea
Definition
Elephant shrews or sengis
Term
Scandentia
Definition
Tree shrews
Term
Dermoptera
Definition
Colugos
Term
Characteristics of Afrosoricida, Erinaceomorpha, and Soricomorpha
Definition
Generally small
Pendactyl with plantigrade locomotion
Rostrum tends to be long
Pelage often consists of only gurard hairs (spines)
External pinnae are small or absent
Small braincase with smooth cerebral hemispheres
Term
Characteristics of Afrosoricida, Erinaceomorpha, and Soricomorpha
Definition
Generally small
Pendactyl with plantigrade locomotion
Rostrum tends to be long
Auditory bullae absent
Testes abdominal or anterior
Pubic symphysis reduced
Pelage often consists of only gurard hairs (spines)
External pinnae are small or absent
Small braincase with smooth cerebral hemispheres
Term
Tribosphenic molars
Definition
Close rooted. Molars W-shaped or V shaped
Term
Dilambdodont
Definition
W-shaped molars
Term
Zalambdodont
Definition
V-shaped molars
Term
Tenrecs and Otter Shrews
Definition
Order: Afrosoricida
Family: Tenrecidae

Tenrecs have a cloaca and have a low body temperature. Do not require a scrotum.

-Heterothermic
-Eat invertebrates
-Females have 29 tits
Term
Golden Moles
Definition
Order: Afrosoricida
Family: Chrysochloridae

Burrowers, live underground, eat insect.
Torpor when hot.

Low basal metabolic rate to reduce water requirement.

Eat insects.
Term
Hedgehogs, gymnures
Definition
Order: Erinaceomorpha
Family: Erinaceidae

Hedgehogs nocturnal and mainly terrestrial.

Omnivorous

ONLY INSECTIVORE TO USE TRUE HIBERNATION

Hedgehogs perform a ritual called anointing.

Gymnures occupy moist jungle terrain. Large tothy head, naked furless tail.
Primarily carnivorous and eat arthropods, mice, and small reptiles
Term
Families of Soricomorpha
Definition
Soldenodontidae (solenodons)
Soricidae (shrews)
Talpidae (moles, shrew moles, desmans)
Term
Solenodons
Definition
Order: Soricomorpha
Family: Solenodontidae

Solenodonts are venomous, nocturnal, burrowing, insectivorous mammals.

Large snout

Submaxillary glands produce toxic saliva

May be capable of echolocation
Term
Noles, shrew-moles, desmans
Definition
Order: Soricomorpha
Family: Talpidae

-Shrew-moles smallest of the family are fossorial but also forage on the surface
-moles eat earthworms
-saliva contains a toxin that paralze earthworms

Morphology:
1) rotation of fore-feet
2) pinnae reduced or absent
3) keeled sternum
4) fusimor
5) small eyes

Desmans are small semi-aquatic mammals. Functionally blind and useEimer's organs at end of snout to see.
Term
Shrews
Definition
Order: Soricomorpha
Family: Soricidae

Soricinae: Red toothed shrews
Crocidurinae: white-toothed shrews

No auditory bullae or jugal, an incomplete zygomatic arch. Enael reddish due to iron pigment.

-torpor
-can be venomous (submaxillary glands)
Term
Elephant shrews or sengis
Definition
Order: Macroscelidae
- maintain trails systems for foraging and protection
- have auditory bullae
-have zygomatic arches
-have cecum
- long mobile snout
- high crowned teeth
- molars quadrate and dilambdodont
Term
Tree-shrews
Definition
Two families:
Order: Scandentia
tupaiidae: treeshrews
Ptilocercidae: pen-tailed treeshrew

Treeshrews resemble primitive primates in that they have a large braincase, postorbital bar, scrotal testes, tribospehnic molars, unperforated palate, lower incisors are procumbent and used for grooming.
Term
Family: Priloceridae
Definition
Under order scandentia, tree shrews of this family chronically consume alcohol
Term
Family: Tupaiidae
Definition
Tree shrews under this family are slender animals with long tails and soft, graying to reddish-brown fur.
Term
Tree shrew characteristics
Definition
-Omnivorous
-Poorly developed canine teeth
-unspecialized molars
-upper molars are dilambdodont
-lower incisors are procmbent
Term
Flying lemurs or colugos
Definition
Order: Dermoptera

-Colugos have a patagium.
- Herbivores
-Well-developed ceca and intestines
- long gut retention times
-lack opposable thumbs
-procumbent lower incisors
-incisor teeth pectinate, comb-like in shape
-The second upper incisors have two roots, another unique
feature among mammals.
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