Paulamys naso

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Come leggere il tassobox
Ratto dal naso lungo di Paula
Immagine di Paulamys naso mancante
Stato di conservazione
In pericolo[1]
Classificazione scientifica
DominioEukaryota
RegnoAnimalia
PhylumChordata
ClasseMammalia
SuperordineEuarchontoglires
OrdineRodentia
SottordineMyomorpha
SuperfamigliaMuroidea
FamigliaMuridae
SottofamigliaMurinae
GenerePaulamys
Musser, 1986
SpecieP.naso
Nomenclatura binomiale
Paulamys naso
Musser, 1981

Il ratto dal naso lungo di Paula (Paulamys naso Musser, 1981) è l'unica specie del genere Paulamys (Musser, 1986), endemica dell'Isola di Flores.[1][2]

Descrizione

Roditore di piccole dimensioni, con lunghezza della testa e del corpo di 164 mm, la lunghezza della coda di 117 mm, la lunghezza del piede di 39,3 mm, la lunghezza delle orecchie di 24,2 mm e un peso fino a 122 g.[3]
Il cranio presenta un rostro molto allungato e una scatola cranica ovale.
Sono caratterizzati dalla seguente formula dentaria:

3 0 0 1 1 0 0 3
3 0 0 1 1 0 0 3
Totale: 16
1.Incisivi; 2.Canini; 3.Premolari; 4.Molari;

La pelliccia è lunga e soffice, il colore del dorso è bruno-olivastro con dei riflessi marroni chiari e bistro. Le parti ventrali sono grigie chiare. Sono presenti dei peli più lunghi color seppia, specialmente sul fondo schiena. La pelle delle labbra, la superficie dorsale delle zampe è priva di pigmento. Le vibrisse sono scure e lunghe 60 mm. La parte superiore delle mani è ricoperta di pochi peli bruno-olivastri mentre le dita sono ricoperte di pochi peli biancastri. La parte superiore dei piedi è bruno olivastro. Gli artigli sono lunghi. Il pollice è munito di un'unghia. Il palmo delle mani ha 5 cuscinetti, mentre la pianta dei piedi ne ha 6. La coda è più corta della testa e del corpo ed è ricoperta densamente di piccoli peli, bruno-nerastri dorsalmente e grigi inferiormente. Sono presenti 13-19 anelli di scaglie per centimetro.

Biologia

Comportamento

È una specie terricola.

Alimentazione

Si nutre di funghi, insetti, vermi, lumache e probabilmente anche di frutta.

Distribuzione e habitat

Questa specie è endemica delle montagne dell'Isola di Flores.

Vive nelle foreste pluviali tropicali montane tra i 1.000 e 2.000 metri di altitudine. È tollerante probabilmente ad un leggero degrado del proprio habitat.

Conservazione

La specie è stata originariamente descritta da un frammento subfossile. Un individuo catturato è stato successivamente identificato come appartenere a questo genere.
La IUCN Red List, considerato l'areale limitato e frammentato e il continuo declino della qualità del proprio habitat, classifica P.naso come specie in pericolo (EN).[1]

Note

  1. ^ a b c (EN) Helgen, K. & Aplin, K. 2008, Paulamys naso, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.
  2. ^ (EN) D.E. Wilson e D.M. Reeder, Paulamys naso, in Mammal Species of the World. A Taxonomic and Geographic Reference, 3ª ed., Johns Hopkins University Press, 2005, ISBN 0-8018-8221-4.
  3. ^ Novak, 1999.

Bibliografia

Altri progetti

  Portale Mammiferi: accedi alle voci di Wikipedia che trattano di mammiferi

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