Upland Chorus Frog
Pseudacris feriarum

  • Upland Chorus Frog
  • Upland Chorus Frog
  • Upland Chorus Frog
  • Upland Chorus Frog
  • Upland Chorus Frog
  • Upland Chorus Frogs in Amplexus
  • Upland Chorus Frog
  • Upland Chorus Frog
  • Upland Chorus Frog
  • Upland Chorus Frog Eggs
Upland Chorus Frog1 Upland Chorus Frog2 Upland Chorus Frog3 Upland Chorus Frog4 Upland Chorus Frog5 Upland Chorus Frogs in Amplexus6 Upland Chorus Frog7 Upland Chorus Frog8 Upland Chorus Frog9 Upland Chorus Frog Eggs10

Common Name: Upland Chorus Frog  
Scientific Name: Pseudacris feriarum
Etymology:
Genus: Pseudacris is derived from the Greek words pseudes meaning "false" and akris meaning "locust"
 Species: feriarum is Latin meaning "holidays or leisure"
Average Length: 0.75 - 1.4 in. (1.9 - 3.5 cm)
Virginia Record Length: 
Record length: 1.5 in. (3.8 cm)

 

PHYSICAL DESCRIPTION: This species ranges in size from 19 to 35 mm (3/4 to 1-3/8 in). Its dorsal pattern is extremely variable with a few consistencies: 1) a light line along the upper lip and 2) a dark stripe from snout to groin that passes through the eye. The general coloration is brown or grey. The middorsal pattern may be striped, partially striped, spotted or absent. Typically there are 3 longitudinal dark stripes that may be broken into streaks or rows of small spots. A dark triangle is often present between the eyes. The ventrum is cream-colored and often stippled with dark spots. The tibia length is equivalent to 1/2 the length from snout to vent *11407*.

REPRODUCTION: This species attains sexual maturity after the first year *11406*. Breeding occurs between February and May. The male mating call is a regularly repeated "crreek" or "prreep" resembling the sound of running a finger along a comb. Males call from fairly open areas *11407*. Mating success among males was found to be low, approximately 17.2% *11406*. Ovum size was found to be larger and duration of development longer in montane vs. lowland populations *11406*. Eggs are laid in clumps of approximately 1000 eggs. These clumps are attached to vegetation. Metamorphosis occurs in two or three months *11284*.

BEHAVIOR: They are found among grassy swales, moist woodlands, river bottom swamps, and in the vicinity of ponds, bogs, and marshes *11407*. Silent males exhibit a behavior called sexual interference or satellite behavior. These satellite males sit quietly near calling males. Two hypotheses exist as to the results of this behavior: 1) these males intercept the females that are migrating towards the calling males and/or 2) these males move into territories established by the calling males once they have finished mating *11406*.

ORIGIN: Native

LIMITING FACTORS: This species requires semi-permanent, late winter pools for breeding *11284*.

POPULATION PARAMETERS: Mating success among males is low, approximately 17.2% *11406*.

AQUATIC/TERRESTRIAL ASSOCIATIONS: This species is found in the Coastal Plain and Piedmont with scattered populations in the montane region *11332*. It is distributed within grassy swales, moist woodlands, river bottom swamps, and in the vicinity of ponds, bogs, and marshes *11407*. This species seems to particularly be prevalent in sweet gum-yellow poplar river bottom swamps *11284*.

References for Life History

  • 11284 - Wilson, L.A., 1995, Land manager's guide to the amphibians and reptiles of the South, 360 pp. pgs., The Nature Conservancy, Southeastern Region, Chapel Hill, NC

  • 11332 - Mitchell, Joseph C. and Karen K. Reay, 1999, Atlas of Amphibians and Reptiles in Virginia, Num. 1, 122 pgs., Virginia Department of Game and Inland Fisheries, Richmond, VA

  • 11406 - Duellman, William E. and, Trueb, Linda, 1986, Biology of Amphibians, 671 pgs., The Johns Hopkins University Press, Baltimore

  • 11407 - Conant, Roger and, Collins, John T., 1998, Peterson Field Guide: Reptiles and Amphibians, Eastern/Central North America, 616 pgs., Houghton Mifflin Company;, Boston

Photos:

*Click on a thumbnail for a larger version.

Pittsylvania Co Loudoun Co Fairfax Co Fairfax Co Pittsylvania Co. Pittsylvania Co
Calling male
Pittsylvania Co.
Calling male
Pittsylvania Co.
Clarke Co. Spring peeper
(top)
vs. Upland Chorus
(bottom)
Calling male
Clarke Co.
Amplexus
White Oak Mountain
WMA

 

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