Subfossil rodents and tenrecs of Children’s Cave, Madagascar
Author
Denys, Christiane
Institut de Systématique, Evolution, Biodiversité (ISYEB) UMR 7205, Muséum National d’Histoire Naturelle, CNRS, Sorbonne Universités, EPHE, Université des Antilles, Paris, France;
Author
Gabriel, Nadine W.
Department of Earth Sciences, Natural History Museum, London, UK;
Author
Lalis, Aude
Institut de Systématique, Evolution, Biodiversité (ISYEB) UMR 7205, Muséum National d’Histoire Naturelle, CNRS, Sorbonne Universités, EPHE, Université des Antilles, Paris, France;
Author
Jenkins, Paulina
Vertebrates Division, Natural History Museum, London, UK
text
Journal of Natural History
2024
2024-07-15
58
25 - 28
796
839
http://dx.doi.org/10.1080/00222933.2024.2370663
journal article
10.1080/00222933.2024.2370663
1464-5262
13219769
Genus
Oryzorictes
A. Grandidier, 1870
Two
species of
Oryzorictes
are generally accepted as present in
Madagascar
,
O
. hova
A. Grandidier, 1870 and
O. tetradactylus
Milne-Edwards and A. Grandidier, 1882
. Three cryptic species, however, have recently been determined within
O. hova
based on molecular and morphological evidence but as yet remain unnamed (
Everson
et al
. 2018
).
Both
named species occur in the
Central Highlands
;
Oryzorictes hova
is widely distributed and ranked as of
Least Concern
on the
IUCN
Red List
(
Stephenson
et al
. 2016
), although the status of cryptic species under this name will require future re-evaluation.
Oryzorictes tetradactylus
is ranked as
Data Deficient
as it is known mostly from specimens collected in
Central
and
East
Madagascar
late in the nineteenth century, including those collected by
Major
at
Antsirabe
and the relatively close localities of
Fasina
(
19°45’S
,
46° 56’E
) and
Andranobe
(
19°49’S
,
46°59’E
) (
Jenkins and Carleton 2005
).
This
species has not been recorded at any of the
Protected Area
sites in the
Central Highlands
, unlike
O
. cf.
hova
which is listed from three such sites: Ambohitantely,
Anjozorobe-Angavo
and
Marolambo
(
Goodman
et al
. 2018). There are a few records of this species from Andringitra in 1970, two at high altitudes of
2030 m
and
2470 m
, respectively; however, no specimens were discovered during the elevational survey of the eastern slopes of Andringitra in 1993 (
Goodman
et al
. 1996a
). The skull of
O. hova
is more robust than that of
O. tetradactylus
, averages larger in size (
Table 5
) and has larger molars.