Cryptic Species of a Cascade Frog from Southeast Asia: Taxonomic Revisions and Descriptions of Six New Species
Author
BAIN, RAOUL H.
Author
LATHROP, AMY
Author
MURPHY, ROBERT W.
Author
ORLOV, NIKOLAI L.
Author
CUC, HO THU
text
American Museum Novitates
2003
2003-10-29
3417
1
60
http://www.bioone.org/doi/abs/10.1206/0003-0082%282003%29417%3C0001%3ACSOACF%3E2.0.CO%3B2
journal article
3413
10.1206/0003-0082(2003)417<0001:CSOACF>2.0.CO;2
0464179d-9549-4885-9ddd-32ffef32942e
0003-0082
4734880
Rana leporipes
Werner, 1930
HOLOTYPE
:
Two
figures (
Werner, 1930: 49
, pl. IV) of
Mell
no. 15660, an adult female from
Lung Tao Shan
,
North Kwangtung
,
China
(
700 m
a.s.l.
) collected on
4 July 1919
by
R. Mell. The
voucher specimens of the type series have been lost and the photographs of the
holotype
become the iconotype.
DIAGNOSIS (from text and plates of original description):
Rana leporipes
is characterized by a combination of the following attributes: (1) body dorsoventrally compressed; (2) SVL reported for females between 52 and
102 mm
; (3) vomerine teeth in rows oblique to choanae; (4) lipstripe white; (6) tympanum very distinct, TMP:EYE is 0.5; (7) supratympanic fold milky white; (8) dorsal skin smooth, flanks weakly granular, dorsolateral folds slightly distinguishable, venter smooth; (9) dorsum dark green, flanks stony gray with white marbling, legs not banded; (11) disks on fingers and toes only slightly enlarged (<2× base of phalanges); (12) feet fully webbed to base of distal phalanges; (13) subarticular tubercles and inner metatarsal tubercle large, projecting; (14) terminal phalanges oblong, somewhat pointed.
COMPARISONS:
Rana leporipes
superficially resembles other Asian cascade ranids, including
Huia nasica
,
Rana andersonii
,
R. archotaphus
,
R. chalconota
,
R. chloronota
,
R. grahami
,
R. graminea
,
R. hainanensis
,
R. hejiangensis
,
R. hosii
,
R. jingdongensis
,
R. junlianensis
,
R. kwangwuensis
,
R. livida
,
R. margaretae
,
R. schmackeri
,
R. sinica
and
R. tiannensis
(table 12).
Rana leporipes
is unique among all of the above species in having a white supratympanic fold, webbing that only reaches the distal phalanx (not the disk), and oblong, somewhat rounded distal phalanges (T shaped in others, unknown for
R. hejiangensis
,
R. junlianensis
, and
R. kwangwuensis
). The absence of banding on the legs distinguishes
R. leporipes
from all species listed here, except
R. livida
(present or absent in
R. chalconota
and
R. hosii
). The presence of a dorsolateral fold also distinguishes it from
R. andersonii
,
R. chloronota
,
R. hainanensis
,
R. hejiangensis
,
R. jingdongensis
,
R. junlianensis
,
R. kwangwuensis
,
R. livida
,
R. margaretae
,
R. schmackeri
,
R. sinica
, and
R. tiannensis
. Whereas
Huia nasica
has an olivebrown dorsum,
R. leporipes
is dark green.
Rana hainanensis
further differs from
R. leporipes
in its size (SVL
R. hainanensis
103 mm
) and relative lengths of fingers (II <IV <I for
R. hainanensis
, I = II for
R. leporipes
).
Rana junlianensis
has brown lip bands.
Rana andersonii
has a rough, olivebrown dorsum.
Rana grahami
has pustules on the dorsum and flanks and no digital disks.
Rana schmackeri
has a smooth, heavily spotted dorsum.
Rana tiannensis
has a rough, brown dorsum with large, prominent lateral granulations. Both
Rana chalconota
and
R. archotaphus
possess an outer metatarsal tubercle, but
R. leporipes
does not.
Rana hosii
can be distinguished from
R. leporipes
by its feeble tarsal folds.
Rana chloronota
differs from
R. leporipes
in that it is larger (
R. chloronota
female SVL
80–100 mm
) and it has a different digital formula (II <I <IV <III for
R. chloronota
). Dorsum of
R. livida
is uniform (flanks a different color for
R. leporipes
).
Fig. 9. Dorsal view of
Rana livida
: adult female (BMNH 1889.3.25.47) (
left
); neotype, adult female (BMNH 1889.3.25.48) (
right
). Scale equals
5 mm
.
REMARKS: The original description of
R. leporipes
reported extensive variation in snout–vent length (
52–102 mm
) and lacked any description of secondary sex characters. The single male specimen of
R. leporipes
is significantly larger than males of
R. chloronota
(
93 mm
vs. a maximum of
53 mm
). However, it is unclear how the male was sexed, as nuptial excrescences and gular pouches are not mentioned. Bourret (who did not indicate whether he had seen the
type
series) thought the male was an incorrectly identified female and that
Werner’s (1930)
frogs were all females spanning a range of varying degrees of maturity. We are also skeptical about any males, although this cannot be confirmed, as the
type
series has been lost.