Scinax acuminatus

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Scinax acuminatus
Hyla phrynoderma - Annali del Museo civico di storia naturale di Genova (1889) (18223250620) (cropped) .jpg

Scinax acuminatus

Systematics
Subordination : Neobatrachia
without rank: Tree frogs (arboranae)
Family : Tree frogs i. w. S. (Hylidae)
Subfamily : Knick-toe tree frogs i. w. S. (Scinaxinae)
Genre : Knick-toe tree frogs ( Scinax )
Type : Scinax acuminatus
Scientific name
Scinax acuminatus
( Cope , 1862)

The neotropical Froschlurch Scinax acuminatus belongs to the subfamily scinax (Scinaxinae) within the family of tree frogs . Within the genus Scinax , the species belongs to the Scinax ruber clade. Edward Drinker Cope described the species in one of his first publications on the fauna of the Gran Chaco .

Synonyms

  • Hyla acuminata Cope, 1862
  • Scytopsis acuminatus Cope, 1874
  • Hyla phrynoderma Boulenger, 1889
  • Hyla Fiebrigi Ahl, 1927
  • Ololygon acuminata Fouquette & Delahoussaye, 1977
  • Scinax acuminata Duellman & Wiens, 1992

Köhler & Böhme (1996) corrected the ending of the epithet .

distribution

The species comes at heights of 150 to 1000 m above sea level. NN from the south of the Brazilian state of Mato Grosso and the Bolivian part of the Pantanal via Paraguay and the Brazilian state of Mato Grosso do Sul to northern Argentina . Whether the area of Scinax acuminatus also to Uruguay sufficient is uncertain.

description

S. acuminatus differs greatly from the other representatives in its appearance. With a head-to-torso length of up to 45 mm, it is one of the largest and most robust members of the genus. Females achieve an average of 40–44 mm KRL and males 39–43 mm KRL. The head is flat and as long as it is wide or a little longer. S. acuminatus differs from other knuckle-toe tree frogs in particular because of its very warty skin. It also has a characteristic dark pattern. The basic color varies from greyish (Argentine individuals) to brownish (Paraguay, Brazil). The insides of the legs are reddish to brown-orange. S. acuminatus looks similar to Scinax fuscovarius . A definite distinguishing feature of this knee-toe tree frog is, in addition to the very warty skin, the deviating color of the inner thighs (black-yellow in S. fuscovarius ).

Habitat and Ecology

Scinax acuminatus lives in savannas and bushland. It is often found near temporary, but also permanent bodies of water, which it also uses for reproduction.

Danger

The IUCN lists Scinax acuminatus as " Least Concern ". Its wide distribution and the fact that the species can adapt relatively well to anthropogenic changes, adopts a broad spectrum of habitats, the total population shows a stable trend and is estimated to be sufficiently large, explain this. The processors consider it unlikely that stocks of the species can decline quickly enough to justify a higher endangerment level. In addition, the species occurs in its range in several protected areas. There are no major endangerments for the species, although intensification of agriculture in Eastern Paraguay could endanger local populations there.

literature

  • L. Aquino, R. Bastos, S. Reichle, D. Silvano, D. Baldo: Scinax acuminatus. (2004). In: IUCN: IUCN Red List of Threatened Species . Version 2010.1. IUCN Red List of Threatened Species . Downloaded on March 29, 2010.
  • GA Boulenger: On a collection of batrachians made by professor Charles Spegazzini at Colonia Resistencia, South Chaco, Argentine Republic. In: To. Mus. Sturgeon. Nat. Genova. Volume 27, 1889, pp. 246-249.
  • ED Cope: Catalogs of the reptiles obtained during the explorations of the Parana Paraguay, Vermejo and Uruguay rivers. I. The Paraguay collection. In: Proc. Acad. Nat. Sci. Philadelphia. 1862, p. 354.
  • DR Frost: Amphibian Species of the World: an Online Reference . Version 5.3 (February 12, 2009). Electronic Database accessible at Amphibian Species of the World . American Museum of Natural History, New York 2009.
  • J. Köhler, W. Böhme: Anuran amphibians from the region of Pre-Cambrian rock outcrops in northeastern Bolivia, with a note on the gender of Scinax Wagler, 1830 (Hylidae). In: Revue Française d'Aquariologie, Herpétologie. Volume 23, 1996, pp. 133-140.

Web links

Individual evidence

  1. ↑ J. Faivovich, CFB Haddad, PCA Garcia, DR Frost, JA Campbell, WC Wheeler: Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. In: Bulletin of the American Museum of Natural History. Volume 294, 2005.
  2. ↑ B. Lutz: Brazilian Species of Hyla . University of Texas Press, Austin / London 1973, pp. 132-133.
  3. ↑ Pictures Fauna Paraguay