A New Species of Hyla (Anura, Hylidae) from Southern Minas Gerais, Brazil
Author(s): Ulisses Caramaschi and Renato N. Feio
Vol. 1990, No. 2 (Jun. 27, 1990), pp. 542-546
Published by: American Society of Ichthyologists and Herpetologists
Stable URL: http://www.jstor.org/stable/1446357
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542 COPEIA, 1990, NO. 2
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DEPARTMENT OF BIOLOGY, UNIVERSITY OF
VICTORIA, VICTORIA, BRITISH COLUMBIA,
CANADA V8W 2Y2.
Box 350, SUB POST OFFICE #6, SASKATOON,
CANADA S7N OWO.
ed 22 May 1989.
Copeia, 1990(2), pp. 542-546
A New Species of Hyla (Anura, Hylidae) from
Southern Minas Gerais, Brazil
ULISSES CARAMASCHI AND RENATO N. FEIO
Hyla ibitipoca, a member
of the H. circumdata
species group, is described from
the Parque Estadual do Ibitipoca, Lima Duarte, southern Minas Gerais, Brazil.
The new species inhabits gallery forests along small creeks and is characterized
by its small size, color pattern, transverse dark bars on thighs and flanks, and
of the Hyla circumdata group
are characterized by a well-developed
prepollex and dark vertical stripes on the pos-
terior surface of thighs; these features distin-
guish this group of species from all other Hyla
in eastern Brazil (Heyer, 1985). The species cur-
rently allocated to the H. circuindata group by
Frost (1985) include H. astartea, H. carvalhoi, H.
H. ibitiguara, H. izecksohni,
zae, and H. sazimai. Heyer (1985) added H. hylax;
we also place H. inartinsi in the group.
During a survey of the herpetofauna of the
Parque Estadual do Ibitipoca, southern Minas
Gerais, Brazil, we collected specimens of a species
in the H. circumdata group that do not agree
with any of the described species. This new
species is described herein.
The abbreviations used in the account are:
SVL (snout-vent length), HL (head length), HW
(head width), IND (internarial distance), END
(eye to nostril distance), ED (eye diameter), IOD
(interorbital distance), UEW (upper eyelid
width), TD (tympanum diameter), 3FD (3rd fin-
ger disk diameter), 4TD (4th toe disk diameter),
THL (thigh length), and TL (tibia length).
Webbing formula follows Myers and Duellman
(1982). Acronyms of the collections housing
specimens follow Frost (1985). All measure-
ments are in mm.
Hyla ibitipoca n. sp.
Holotype.-MN 4460, adult male, collected at
the Parque Estadual do Ibitipoca, Lima Duarte
Municipality (ca. 21'42'S, 43?53'W), State of
Minas Gerais, Brazil, on 06-09 Dec. 1986, by
U. Caramaschi, R. N. Feio, M. C. Britto-Pereira
and H. R. Silva.
Paratopotypes.-Thirty-five adult males: MN
4453-4459, collected on 17-20 Nov. 1986, by
R. N. Feio; MN 4461-4471, collected with the
holotype; MN 4521-4525, collected on 16-19
? 1990 by the American
CARAMASCHI AND FEIO-NEW HYLA 543
Dec. 1986, by R. N. Feio; MN 4526, collected
on 20Jan. 1987, by R. N. Feio; MN 4711-4717,
MZUSP 66100-66101, ZUEC 6823-6824, col-
lected on 19-21 Nov. 1987, by U. Caramaschi
and R. N. Feio.
-A small species (35.5-42.7 mm SVL
in males), belonging to the H. circumdata
group, characterized by: 1) single, subgular vo-
cal sac; 2) small tympanum; 3) presence of trans-
verse dark brown cross bars of blotches on dor-
sum; 4) presence of transverse dark bars on
thighs and vertical bars on flanks; and 5) ab-
sence of reddish color on groin and concealed
surfaces of arms and legs.
By its small size, H. ibitipoca is distinguished
from H. carvalhoi, H. circumdata, H. hylax, and
H. martinsi (combined SVL ranging 48.0-72.0
mm; Bokermann, 1964; Peixoto, 1981; Heyer,
1985); it differs further from H. carvalhoi by its
single, expanded vocal sac (bilobed, subgular
vocal sac in H. carvalhoi), and vertical, defined
dark bars on thighs (dark bars fragmented and
irregularly arranged in H. carvalhoi). It differs
from H. circumdata by its small tympanum and
rounded subarticular tubercles on 4th and 5th
fingers (bilobed in H. circumdata).
From H. hylax,
the new species differs by its larger tympanum
and by the arrangement of the dark brown
transverse bars on dorsum; from H. martinsi, it
is distinguished by its narrower head, larger
tympanum, and more numerous and narrower
dark bars on the thighs. Hyla ibitipoca is larger
than H. sazimai (SVL 20.0-36.4 mm; Cardoso
and Andrade, 1982) and has a broader head
and narrower, more defined and numerous dark
bars on the thighs. From H. ibitiguara, the new
species is distinguished by its more slender build,
small tympanum, slightly smaller size (SVL 31.1-
44.1 mm in H. ibitiguara; Cardoso, 1983), more
defined dark bars on the thighs, and different
arrangement of the vertical bars on the flanks.
When alive, H. ibitipoca is separated from H.
nanuzae by the absence of reddish color in the
groin and concealed surfaces of arms and legs;
additionally, it has more numerous dark bars
that extend onto the anterior and posterior sur-
faces of the thighs (H. nanuzae has dark stripes
only on dorsal and dorsolateral surfaces of the
thighs; Bokermann and Sazima, 1973). From
H. astartea, the new species is distinguished by
its smaller tympanum, barred flanks, shorter
legs, and pattern of dark bars on the thighs (as
seen for H. nanuzae; Bokermann, 1967). Hyla
is distinguished from H. izecksohni
Fig. 1. Hyla ibitipoca, holotype, MN 4460, dorsal
more robust build, smaller size (SVL 34.0-51.0
mm in H. izecksohni;
Jim and Caramaschi, 1979),
noticeably smaller tympanum, narrower head,
and presence of vocal sac and vocal slits.
Description.--Ratios of the measurements are
given in Table 1. Body robust; head slightly
longer than wide; snout short, the shape round-
ed in dorsal and lateral outlines (Fig. 2A-B);
nostrils slightly protuberant, directed laterally;
canthus rostralis distinct, rounded; loreal re-
gion slightly concave; lips not flared; eyes large,
protruding; interorbital space flat; cranial crests
absent; tympanum large, nearly circular; a su-
pratympanic fold from posterior corner of orbit
to shoulder; vocal sac single, subgular; vocal slits
present; tongue large, covering entire floor of
the mouth, slightly notched behind; vomerine
teeth in two patches forming chevron contig-
uous with, and between choanae anteriorly, sep-
arated and extending slightly behind posterior
edges of choanae posteriorly; choanae small,
Arms robust, forearm hypertrophied; small
crest along lateral edge forearm to base of disk
on 4th finger. Hand with small palmar tubercle,
divided longitudinally (Fig. 2C); prepollex well
developed with curved spine not exposed; fin-
544 COPEIA, 1990, NO. 2
?,?; ? ~ -5
... . ~ ???.
5. m m
f.::: ?~*~:ll ~?
_~~1? r?-:. .-.~.~, ~::~0
::?': P~~5:i? ~ :rzs'', ?' ~ 0:
~ ~::. .,,:J:-..:':::.?.". .::~-?: ?:: ::1~1(&C;.:
Fig. 2. Hyla ibitipoca, holotype, MN 4460. (A) Dorsal view of the head. (B) Lateral view of the head. (C)
Left hand. (D) Left foot.
gers robust, subarticular tubercles single,
rounded; supernumerary tubercles present;
webbing formula, I 0-0 II 2--3 III 3--1 IV;
finger disks large, nearly circular.
Legs moderately robust; inner tarsal fold dis-
tinct, extending length of tarsus; calcar mod-
erately large. Foot with large, ovoid, inner
metatarsal tubercle (Fig. 2D); outer metatarsal
tubercle small, indistinct, ovoid; subarticular tu-
?bercles single, rounded; numerous small super-
numerary tubercles; webbing formula, I 2-2 II
1.5-3 III 2--3 IV 3--1 V; toe disks moderately
large, slightly smaller than finger disks. Skin on
dorsum and throat smooth; belly and under sur-
faces of thighs areolate; anal region moderately
glandulose; weak glandular transverse fold above
Color in life.-Dorsum pale to dark brown with
transverse coalescent bars or blotches darker
brown, without producing defined pattern;
flanks pale brown, with incomplete gray vertical
bars; dorsum of thighs with a golden yellow
longitudinal stripe; anterior and posterior sur-
faces of thighs deep purple; continuous black
distinct transverse bars on anterior, dorsal, and
posterior surfaces of thighs; number of black
bars on thighs, 6-10 (2 = 8); pale interspaces
2-6 times width of bars; dorsum of arms and
tibia brown with darker transverse brown bars;
AND FEIO-NEW HYLA 545
TABLE 1. RATIOS OF THE MEASUREMENTS, IN PER-
(N = 32 MALES).
Ratio Range Mean
HW/HL 95.0-106.1 99.1
HW/SVL 33.8-38.6 35.8
END/HW 26.3-30.1 28.3
END/ED 85.7-105.7 93.9
IND/END 72.1-88.9 79.6
IND/ED 67.3-85.0 74.6
ED/HW 27.7-32.8 30.2
UEW/ED 76.1-90.0 80.9
IOD/ED 90.5-118.4 103.2
UEW/IOD 66.7-91.1 78.3
TD/IND 78.8-111.1 93.6
TD/EN 69.8-82.0 74.4
TD/ED 60.5-84.2 69.7
3FD/TD 44.2-80.0 64.2
TL/SVL 48.4-52.9 50.6
THL + TL/SVL 96.3-105.5 100.9
4TD/TD 50.0-73.1 62.2
belly dull white; throat slightly grayish; some
specimens with distinct white blotches on dor-
sum, elbow, knee, and/or above anus; eyes
golden brown; lower eyelid without vermicu-
lations but with black melanophores on supe-
Color in preservative.
-Dorsum brown to grayish
brown with darker brown transverse coalescent
bars and blotches; gray vertical bars on flanks;
dorsum of thighs white-cream, anterior and
posterior surfaces whitish; transverse bars on
thighs black; belly white-cream; throat slightly
grayish; some specimens with distinct white
blotches on dorsum, elbow, knee, and/or above
(range and mean, n = 32 males).--
SVL 35.5-42.7 (39.5); HL 13.2-15.6(14.3); HW
13.0-15.7 (14.1); IND 2.7-3.5 (3.2); END 3.6-
4.6 (4.0); ED 3.8-4.9 (4.3); IOD 3.8-5.0 (4.4);
UEW 3.0-4.1 (3.4); TD 2.5-3.4 (3.0); THL
17.7-22.1 (19.8); TL 18.2-21.8 (20.0).
of holotype.-SVL 41.0; HL 15.5;
HW 15.2; IND 3.3; END 4.2; ED 4.9; IOD 4.5;
UEW 4.1; TD 3.2; THL 20.2; TL 20.0.
Etymology.-The species is named for the type
locality in the Serra do Ibitipoca that in the
Tupi native language means bored or broken
mountain (Sampaio, 1928), probably in allusion
to the numerous caves and canyons existing in
was found in the region
of the Serra do Ibitipoca (Mantiqueira Moun-
tain Range) more than 1200 m above sea level.
The vegetation is characterized by rocky,
mountain fields called "campo rupestre," with
small bushes and grasses on a sandy soil. Small
gallery forests occur along creeks; the water
runs on a rocky bottom, with riffles and pools,
and the richness of organic acids imparts a dark
color to the water. The frogs were calling in
the gallery forests about 2 m from the stream.
They called on the ground litter or on small
branches, rarely more than 10-15 cm above
ground level. Several specimens were found in
small holes or in subterranean galleries formed
by interlaced tree roots; some frogs were calling
at the entrance of these galleries and, at the
approach of the observer, stopped calling and
entered the hole. The advertisement call, emit-
ted sporadically, resembles the bark of a small
In the same area H. circumdata and H. nanuzae
(both included in the H. circumdata
calling from small trees, 1-2 m above ground
specimens examined.-Hyla astartea, MN 4052 (ex-WCAB 1020,
paratype); H. carvalhoi, MN 4129 (paratype); H. circumdata, AL-MN
623, 1326-1327, 2419-2420, 3710 (topotypes); H. hylax, MZUSP 59937
(holotype); H. ibitiguara, MN 4152 (holotype), MN 4143 plusJ.Jim 6023
MZUSP 50178 (holotype), MZUSP 50179 plus
J.Jim 4388-4389 (paratypes); H. martinsi, MN 3972 (ex-WCAB 12695,
paratype); H. nanuzae, MN 4583 (ex-WCAB 47542, paratype), ZUEC
1552, 1679 (ex-WCAB 47536-47537, paratypes); H. sazimai, MN 4149
(holotype), MN 4150-4151 (paratypes).
We thank the Instituto Estadual de Florestas
de Minas Gerais for permitting us to collect in
the Parque Estadual do Ibitipoca; P. E. Van-
zolini, J. Jim, A. J. Cardoso, and I. Sazima for
allowing us to examine specimens under their
care; M. C. Britto-Pereira and H. R. Silva for
help with the field work and pleasant compan-
ionship; and E. P. Caramaschi and I. Sazima for
criticizing the manuscript. This study was sup-
ported by Conselho Nacional de Desenvolvi-
mento Cientifico e Tecnol6gico (CNPq) grants
to both authors.
W. C. A. 1964. Dos nuevas
Hyla de Minas
y notas sobre Hyla
546 COPEIA, 1990, NO. 2
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--, AND G. V. ANDRADE. 1982. Nova esp6cie de
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O. L. 1981. Nova esp6cie de Hyla da Serra
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DO RIO DE
JANEIRO, QUINTA DA BOA
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Accepted 24 May 1989.