The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)

Melanophryniscus orejasmirandai is a species of toad known only from two localities in southern Uruguay. This toad is the southernmost suggested taxon of the M. tumifrons group, whose species are characterized by a glandular frontal swell-ing on the snout. The study of the type series of M. orejasmi...

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Detalles Bibliográficos
Autores principales: Baldo, D., Borteiro, C., Kolenc, F., Rosset, S., Prigioni, C., Debat, C.M.
Formato: JOUR
Lenguaje:English
Materias:
Geographic distribution
Melanophryniscus orejasmirandai
Melanophryniscus pachyrhynus
Osteology
Taxonomy
Anura
Bufonidae
Melanophryniscus
Melanophryniscus tumifrons
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11755326_v_n3235_p45_Baldo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11755326_v_n3235_p45_Baldo
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spelling todo:paper_11755326_v_n3235_p45_Baldo2023-10-03T16:08:49Z The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae) Baldo, D. Borteiro, C. Kolenc, F. Rosset, S. Prigioni, C. Debat, C.M. Geographic distribution Melanophryniscus orejasmirandai Melanophryniscus pachyrhynus Osteology Taxonomy Anura Bufonidae Melanophryniscus Melanophryniscus tumifrons Melanophryniscus orejasmirandai is a species of toad known only from two localities in southern Uruguay. This toad is the southernmost suggested taxon of the M. tumifrons group, whose species are characterized by a glandular frontal swell-ing on the snout. The study of the type series of M. orejasmirandai and of M. pachyrhynus, along with observations made on many specimens of both species suggested a close relationship between them. The analysis of the variation of snout-vent length, coloration pattern, relative size of the frontal swelling, and presence/absence of the metatarsal gland showed that characters previously used to separate both species resulted of no diagnostic value. Further comparison of the external morphology, osteological characters, and partial sequences of the cytochrome b gene indicated that M. orejasmirandai is a junior synonym of M. pachyrhynus. Melanophryniscus pachyrhynus is characterized by a reticulated orange ventral pat-tern which is shared only with M. peritus, from which it differs by its smaller size. The ornamentation of the nasal bones underlying the frontal swelling in M. pachyrhynus seems to be characteristic of the M. tumifrons group. An updated dis-tribution map of M. pachyrhynus and some new localities are also provided. Copyright © 2012 Magnolia Press. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11755326_v_n3235_p45_Baldo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Geographic distribution
Melanophryniscus orejasmirandai
Melanophryniscus pachyrhynus
Osteology
Taxonomy
Anura
Bufonidae
Melanophryniscus
Melanophryniscus tumifrons
spellingShingle Geographic distribution
Melanophryniscus orejasmirandai
Melanophryniscus pachyrhynus
Osteology
Taxonomy
Anura
Bufonidae
Melanophryniscus
Melanophryniscus tumifrons
Baldo, D.
Borteiro, C.
Kolenc, F.
Rosset, S.
Prigioni, C.
Debat, C.M.
The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)
topic_facet Geographic distribution
Melanophryniscus orejasmirandai
Melanophryniscus pachyrhynus
Osteology
Taxonomy
Anura
Bufonidae
Melanophryniscus
Melanophryniscus tumifrons
description Melanophryniscus orejasmirandai is a species of toad known only from two localities in southern Uruguay. This toad is the southernmost suggested taxon of the M. tumifrons group, whose species are characterized by a glandular frontal swell-ing on the snout. The study of the type series of M. orejasmirandai and of M. pachyrhynus, along with observations made on many specimens of both species suggested a close relationship between them. The analysis of the variation of snout-vent length, coloration pattern, relative size of the frontal swelling, and presence/absence of the metatarsal gland showed that characters previously used to separate both species resulted of no diagnostic value. Further comparison of the external morphology, osteological characters, and partial sequences of the cytochrome b gene indicated that M. orejasmirandai is a junior synonym of M. pachyrhynus. Melanophryniscus pachyrhynus is characterized by a reticulated orange ventral pat-tern which is shared only with M. peritus, from which it differs by its smaller size. The ornamentation of the nasal bones underlying the frontal swelling in M. pachyrhynus seems to be characteristic of the M. tumifrons group. An updated dis-tribution map of M. pachyrhynus and some new localities are also provided. Copyright © 2012 Magnolia Press.
format JOUR
author Baldo, D.
Borteiro, C.
Kolenc, F.
Rosset, S.
Prigioni, C.
Debat, C.M.
author_facet Baldo, D.
Borteiro, C.
Kolenc, F.
Rosset, S.
Prigioni, C.
Debat, C.M.
author_sort Baldo, D.
title The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)
title_short The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)
title_full The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)
title_fullStr The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)
title_full_unstemmed The taxonomic status of Melanophryniscus orejasmirandai Prigioni & Langone, 1987 "1986" (Anura: Bufonidae)
title_sort taxonomic status of melanophryniscus orejasmirandai prigioni & langone, 1987 "1986" (anura: bufonidae)
url http://hdl.handle.net/20.500.12110/paper_11755326_v_n3235_p45_Baldo
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