A New Species of Hyla (Anura, Hylidae) from Southern Minas Gerais, Brazil Author(s): Ulisses Caramaschi and Renato N. Feio Source: Copeia, 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 Accessed: 23/11/2010 14:56 Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/page/info/about/policies/terms.jsp. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at http://www.jstor.org/action/showPublisher?publisherCode=asih. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
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ecology and systematics:a tributeto HenryS. Fitch. SOKAL, R. R., ANDF.J. ROHLF. 1981. Biometry.2nd ed. W. H. Freeman & Co., New York, New York. R. A. Seigel, L. E. Hunt,J. L. Knight,L. A. Malaret and N. L. Zuschlag (eds.). Spec. Publ. Mus. Nat. SPINNER,B., ANDR. M. GABRIEL.1981. Factoral analHist., Universityof Kansas,Lawrence, Kansas. ysis of variancewith unequal cell frequencies.Can. W. B. 1964. The importanceof the facial PRESTON, Psychol. 22:260-270. pit of the northern Pacificrattlesnake(Crotalusviridis oreganus)under natural conditions in southern DEPARTMENT OF BIOLOGY, UNIVERSITY OF BritishColumbia.Unpubl. M.Sc. thesis, University BRITISH COLUMBIA, VICTORIA, VICTORIA, of BritishColumbia. CANADA V8W 2Y2.PRESENTADDRESS(JMM): SAUER, J. R., AND N. SLADE. 1987. Size-based deBox 350, SUB POST OFFICE #6, SASKATOON, mographyof vertebrates.Ann. Rev. Ecol. Syst. 18: SASKATCHEWAN,CANADA S7N OWO.Accept71-90. ed 22 May 1989. R. 1978. Growthrates and sexual maturation SHINE, in six species of Australianelapid snakes. Herpetologica 34:73-79.
Copeia, 1990(2), pp. 542-546
A New Species of Hyla (Anura, Hylidae) from Southern Minas Gerais, Brazil ULISSES CARAMASCHIAND RENATO N. FEIO Hyla ibitipoca, a member of the H. circumdataspecies 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 small tympanum.
T
REEFROGSof the Hyla circumdata group
are characterized by a well-developed prepollex and dark vertical stripes on the posterior surface of thighs; these features distinguish this group of species from all other Hyla in eastern Brazil (Heyer, 1985). The species currently allocated to the H. circuindata group by Frost (1985) include H. astartea, H. carvalhoi, H. circumdata,H. ibitiguara, H. izecksohni,H. nanuzae, 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 finger 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 measurements are in mm. Hyla ibitipoca n. sp. Figs. 1-2 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 AmericanSocietyof Ichthyologistsand Herpetologists
CARAMASCHI AND FEIO-NEW
HYLA
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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, collected on 19-21 Nov. 1987, by U. Caramaschi and R. N. Feio. op
Diagnosis.-A small species (35.5-42.7 mm SVL in males), belonging to the H. circumdataspecies group, characterized by: 1) single, subgular vocal sac; 2) small tympanum; 3) presence of transverse dark brown cross bars of blotches on dorsum; 4) presence of transverse dark bars on thighs and vertical bars on flanks; and 5) absence 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 31.144.1 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 surfaces 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 ibitipocais distinguished from H. izecksohniby its
Fig. 1. Hyla ibitipoca,holotype, MN 4460, dorsal view. 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 rounded in dorsal and lateral outlines (Fig. 2A-B); nostrils slightly protuberant, directed laterally; canthus rostralis distinct, rounded; loreal region slightly concave; lips not flared; eyes large, protruding; interorbital space flat; cranial crests absent; tympanum large, nearly circular; a supratympanic 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 contiguous with, and between choanae anteriorly, separated and extending slightly behind posterior edges of choanae posteriorly; choanae small, widely separated. 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-
COPEIA, 1990, NO. 2
544
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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 distinct, extending length of tarsus; calcar moderately large. Foot with large, ovoid, inner metatarsal tubercle (Fig. 2D); outer metatarsal tubercle small, indistinct, ovoid; subarticular tusingle, rounded; numerous small super?bercles 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 surfaces of thighs areolate; anal region moderately
glandulose; weak glandular transverse fold above anus. 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 surfaces 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;
CARAMASCHI AND FEIO-NEW HYLA TABLE
1.
RATIOS
OF THE MEASUREMENTS,
IN PER-
CENTS,OFHyla ibitipoca(N = 32 MALES). Ratio
HW/HL HW/SVL END/HW END/ED IND/END IND/ED ED/HW UEW/ED IOD/ED UEW/IOD TD/IND TD/EN TD/ED 3FD/TD TL/SVL THL + TL/SVL 4TD/TD
Range
Mean
95.0-106.1 33.8-38.6 26.3-30.1 85.7-105.7 72.1-88.9 67.3-85.0 27.7-32.8 76.1-90.0 90.5-118.4 66.7-91.1 78.8-111.1 69.8-82.0 60.5-84.2 44.2-80.0 48.4-52.9 96.3-105.5 50.0-73.1
99.1 35.8 28.3 93.9 79.6 74.6 30.2 80.9 103.2 78.3 93.6 74.4 69.7 64.2 50.6 100.9 62.2
belly dull white; throat slightly grayish; some specimens with distinct white blotches on dorsum, elbow, knee, and/or above anus; eyes golden brown; lower eyelid without vermiculations but with black melanophores on superior edge. Colorin 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 anus. Measurements(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 3.64.6 (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). Measurementsof 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
545
to the numerous caves and canyons existing in the region. Remarks.-Hyla ibitipocawas found in the region of the Serra do Ibitipoca (Mantiqueira Mountain 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, emitted sporadically, resembles the bark of a small dog. In the same area H. circumdataand H. nanuzae (both included in the H. circumdatagroup) were calling from small trees, 1-2 m above ground level. Additionalspecimensexamined.-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 (paratypes);H. izecksohni,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).
ACKNOWLEDGMENTS
We thank the Instituto Estadual de Florestas de Minas Gerais for permitting us to collect in the Parque Estadual do Ibitipoca; P. E. Vanzolini, 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 companionship; and E. P. Caramaschi and I. Sazima for criticizing the manuscript. This study was supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnol6gico (CNPq) grants to both authors. LITERATURE
CITED
W. C. A. 1964. Dos nuevasespecies de BOKERMANN, Hyla de MinasGeraisy notas sobre Hyla alvarengai
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Bok. (Amphibia, Salientia, Hylidae). Neotropica 32: 67-76. . 1967. "Hyla astartea", nova especie da Serra do Mar em So Paulo (Amphibia, Hylidae). Rev. Brasil. Biol. 27:157-158. AND I. SAZIMA.1973. Anfibios da Serra do ,, Cip6, Minas Gerais, Brasil. I-Esp6cies novas de Hyla (Anura, Hylidae). Ibid. 33:329-336. CARDOSO, A. J. 1983. Descrigio e biologia de uma nova esp6cie de Hyla Laurenti, 1768 (Amphibia, Anura, Hylidae). Iheringia, Ser. Zool. 62:37-45. AND G. V. ANDRADE. 1982. Nova esp6cie de --, Hyla do Parque Nacional da Serra da Canastra (Anura, Hylidae). Rev. Brasil. Biol. 42:589-593. FROST,D. R. (ed.). 1985. Amphibian Species of the World. A Taxonomic and Geographical Reference. Allen Press, Inc., and The Association of Systematics Collections, Lawrence, Kansas. HEYER, W. R. 1985. New species of frogs from Boraceia, So Paulo, Brazil. Proc. Biol. Soc. Wash. 98: 657-671.
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