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Hyla squirella

(Squirrel Treefrog)

Overview

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The squirrel treefrog is also known as the "rain frog".

Interesting Facts

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Common Names

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Common Names in English:

Squirrel Treefrog

Description

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Physical Description

Species Hyla squirella

Size: A small Treefrog, 2.2 - 3.8 cm (7/8 - 1.5 in) in length .

Color: Bright green to dark brown, with many variations . An individual may be different colors at different times, depending on temperature , activity, stress, and other factors . It may or may not be spotted, depending on these same factors. There may be a light stripe extending along its side from the top of the mouth to the thigh. This stripe has an indistinct lower edge . It may also have a dark mark between the eyes.

The Squirrel Treefrog is a smaller frog attaining lengths under 2 inches. This species is highly variable in color and pattern . A given individual can change color from green to brown and from spotted to plain . There may also be a light stripe along the side of the body. It is therefore generally suggested that this treefrog be identified by a process of elimination: Gray and Bird-voiced Treefrogs have a white spot under each eye; Pine Woods Treefrog has light, round spots on the rear of the thigh; the Cuban Treefrog is larger and warty; the lateral light stripe, when present, has an indistinct lower border in contrast to the Green Tribe that has a well defined lateral stripe ; Chorus Frogs in general have smaller toe discs and less toe webbing than Treefrogs.

Habitat

It can be found among trees or shrubs , in open pine woods , in swamps , under leaf litter , or even around housesAdults can be found hiding under bark , in hollow tree holes, or really anywhere that is close to moisture and food. This frog is nocturnal , hiding in vegetation during the daytime. . At night it is common around outdoor lights where it hunts insects.

Ecology: Open woods , cities, and towns; thick low vegetation near water; wherever there is adequate moisture, hiding places, nearby standing water , and insect food. When inactive , hides under loose bark , palm leaves, in tree holes , in gardens, and in other protected sites. There is a non-breeding "rain call " given by males from trees and bushes when rainfall is impending. Eggs and larvae develop in flooded roadside ditches, flat woods ponds , swamps , and small, semi permanent stock-watering ponds. Males call from debris and twigs above water, on ground near water, or hidden in grass clumps adjacent to permanent or temporary rain pools of moderate depth (Schwartz and Henderson 1991).[1]


List of Habitats :1.4Forest - Temperate 3.4Shrubland - Temperate 5.1Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls ) 5.4Wetlands (inland) - Bogs , Marshes, Swamps, Fens , Peatlands 5.6Wetlands (inland) - Seasonal/Intermittent Freshwater Lakes (over 8ha) 5.7Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha) 5.8Wetlands (inland) - Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) 14.4Artificial/Terrestrial - Rural Gardens 14.5Artificial/Terrestrial - Urban Areas 15.2Artificial/Aquatic - Ponds (below 8ha)

Biology

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Reproduction

This Treefrog breeds from March to late August or early October. Usually breeding takes place in vegetation. Their call sounds like a duck's quack or sometimes like a squirrel.

Fertilization is external. The female lays up to 1,000 eggs in shallow, standing water with abundant vegetation. Hatching to transformation takes six weeks.

Behavior

The Squirrel Treefrog is nocturnal . It spends the day resting in moist hiding places. It is called a "rain frog" because it is one of the species that calls only during and after summer showers.

In addition to mating calls , the Squirrel Treefrog has a call that it makes when it rains. This call is usually made from sites far from the breeding pond and sounds like some of the sounds that squirrels make, hence the name .

Taxonomy

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Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 29-Aug-2005

Similar Species

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At least eight species can be confused with this Treefrog. Identification is largely by a process of elimination. The Squirrel Treefrog does not have spots or stripes on the inner thighs like those found on the Pine Woods Treefrog and on Northern and Southern Cricket Frogs. It does not have dark spots on its flanks as does the Ornate Chorus Frog. It does not have light spots under its eyes like the Gray Treefrog and Bird - voiced Treefrog do, or a stripe through the eye like that found on the Little Green Frog. It also lacks the "X" on the back that distinguishes the Spring Peeper. The Squirrel Treefrog usually does have a light side stripe, but its bottom border is not as distinct as on the Green Treefrog. The Squirrel Treefrog also has larger toe disks and more webbing on its back feet than other Chorus Frogs do. The ranges of all the Chorus Frogs in Georgia except the Mountain Chorus Frog overlap the Squirrel Treefrog range.

Members of the genus Hyla

ZipcodeZoo has pages for 664 species and subspecies in this genus. Here are just 100 of them:

H. abbreviata · H. abdivita · H. acreana · H. acuminata · H. adelaidensis · H. affinis · H. africana · H. albofrenata · H. alboguttata · H. albolineata · H. albomarginata · H. albonigra · H. albopuncata · H. albopunctata · H. albopunctulata · H. albosignata · H. albotaeniata · H. albovittata · H. alemani · H. alleei · H. alleni · H. allenorum · H. altae · H. altipotens · H. aluminiata · H. alvarengai · H. alytolylax · H. amboinensis · H. ameibothalame · H. americana · H. amicorum · H. anataliasiasi · H. anceps · H. and · H. andersoni (Pine Barrens Treefrog) · H. andersonii (Pine Barrens Tree Frog) · H. andina · H. angiana · H. angularis · H. angustilineata · H. annectans · H. aperomea · H. araguaya · H. arborea (European Common Tree Frog) · H. arborea arborea (European Tree Frog) · H. arborea daponica · H. arborea immaculata · H. arborea japonica · H. arborea kretensis · H. arborea molleri · H. arborea sarda · H. arborea savignyi · H. arborea schelkownikowi · H. arborea var. meridionalis Boettger, 1874 · H. arborescandens (Lesser Bromeliad Treefrog) · H. arboricola · H. arenicola · H. arenicolor (Canyon Treefrog) · H. arfakiana · H. argenteovirens · H. ariadne · H. arildae · H. armata · H. aromatica · H. astartea · H. atlantica · H. auraria · H. aurata · H. aurea · H. aurea ulongae · H. aurifasciata · H. aurifasciatus · H. avicoca avicoca · H. avivoca (Bird-Voiced Treefrog) · H. avivoca avivoca (Bird-Voiced Treefrog) · H. baileyi · H. balzani · H. bambusicola · H. battersbyi · H. baudini · H. baudinii · H. baudini dolomedes · H. baumgardneri · H. becki · H. benitezi · H. berthalutzae · H. bicolor · H. bifurca · H. bifurca andersson · H. biobeba · H. bipunctata · H. bischoffi · H. bischoffi bischoffi · H. bistincta (Mexican Fringe-Limbed Treefrog) · H. bivittata · H. bivocata · H. boans · H. boans boans · H. bocourti · H. boesemani

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal February 29, 2008:

Identifiers

Footnotes

  1. Hammerson, G. & Hedges, B. 2004. In IUCN 2008. 2008 IUCN Red List of Threatened Species. IUCNRedList.org. Downloaded July 18, 2008. [back]
Last Revised: 7/2/2009