Scinax altae

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Scinax altae
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 altae
Scientific name
Scinax altae
( Dunn , 1933)

Scinax altae is a neuweltlicher Froschlurch from the subfamily scinax (Scinaxinae) within the family of tree frogs . Within the genus Scinax , the species according to Faivovich et al. (2005)countedto the Scinax ruber clade.

features

Dunn described the species as a 25 mm long, gray frog with a white belly, four darker, dorsal stripes and a long, flat snout. Another stripe is faintly visible along the middle of the back. The rostral edge (edge ​​of the snout) is rounded and indistinct, the tympanum , the membrane of the hearing organ, measures half the diameter of the eye. There is a faint dark spot between the eyes, a dark gray stripe runs from the nostril over the eye to the middle of the page. The fingers are webbed, half of the toes are webbed. The adhesive disc of the third finger is as big as the tympanum, the first finger shorter than the second with a smaller disc. Arms and legs are uniformly light gray. The throat and vocal sac is very large and extends to the pectoral fold. The ploughshare (vomer) has two small groups of teeth between the nostrils. The skin is finely roughened, the belly roughly wrinkled, the proximal part of the underside of the thighs, that is, towards the trunk, is wrinkled.

According to León, the males with a head-torso length of 26 mm remain somewhat smaller than the females with 27 mm. In 94.5% of the animals the dorsal stripes are continuous, the thighs are not marked, the lower legs with a dark gray longitudinal stripe.

Synonyms and taxonomy

The species was first described by Emmett Reid Dunn in 1933 as Hyla altae . Juan R. León believed he recognized a Panamanian subspecies of Hyla staufferi in it: Hyla staufferi altae Dunn . Duellman & Wiens (1992) placed them in the genus Scinax . In 2001 she declared Duellman a separate species.

distribution

This species is endemic to Panama and inhabits the Pacific lowlands, the Azuero peninsula and central Panama.

Habitat and Ecology

Scinax altae lives in dry forests and savannahs , but is also found in artificial habitats. Presumably it reproduces in temporary waters. Dunn described the call as harsh and sounding like whark . At Summit ( Panama Canal Zone ), wrote Dunn, Scinax altae, along with other frog species, produced the craziest, most confusing and deafening frog concert he has ever heard .

Danger

The IUCN lists Scinax altae as " Least Concern ", although its potential range is estimated to be less than 20,000 km² according to a calculation. However, the species is abundant in many places, adapts relatively well to humans, and the total population is estimated to be large enough with a stable trend that the reviewers consider it unlikely that stocks of the species can decline quickly enough to increase Justify the hazard level. Scinax altae occurs in at least one protected area (Parque Nacional Altos de Campana). The main threats to the species are the expansion of the infrastructure and water pollution.

Individual evidence

  1. ↑ Faivovich, J., Haddad, CFB, Garcia, PCA, Frost, DR, Campbell, JA & WC Wheeler (2005): 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 No. 294. 240 pp. ( Online )
  2. ^ A b c E. R. Dunn: A New Hyla from the Panama Canal Zone. In: Occasional papers of the Boston Society of Natural History Vol. 8, 1933, pp. 61-64. ( Online )
  3. ^ A b Juan R. León: The Systematics of the Frogs of the Hyla Rubra Group in Middle America. In: University of Kansas publications, Museum of Natural History Vol. 18, No. 6, 1969, pp. 505-545 ( online at gutenberg.org)
  4. ^ WE Duellman, JJ Wiens: The status of the hylid frog genus Ololygon and the recognition of Scinax Wagler, 1830. In: Occasional Papers of the Museum of Natural History , University of Kansas, No. 151, 1992, pp. 1-23 . ( Online )
  5. ↑ a b c IUCN

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