Brimley's Chorus Frog - Pseudacris brimleyi

• Diagnostic Features:
  • Size: 1 to 1.25 inches (25 to 32 mm)
  • Color:
    •  Tan to Brownish Yellow
  • Other:
    •  Bold black stripe down each side of the body, extending without interruption from snout to groin and passing through the eye
    • Middorsal stripes brown or gray and frequently faded
    • Undersurfaces yellow, chest usually spotted with brown
    • Markings on legs tend to be longitudinal instead of forming crossbands
    • No dark triangle between the eyes
  • Sexual Dimorphism:
    •  
• Natural History:
  • Habitat:
    •  An early singer in the marshes, swamps, ditches, and wet open woods of the Coastal Plain
    • Low areas in hardwood forests and swamps near rivers and streams.
  • Behavior:
    •  
  • Breeding:
    • February - April, may breed from late fall on.
    • Prefers ditches or shallow ponds.
    • Females deposit small loose clusters of eggs on stems or other objects
• Voice: Sonogram : Call (Jasper County, South Carolina)
  • Short raspiing trill, lasting less than a second and repeated a dozen times or more
• Tadpoles:
  • Tadpole stage: 40 - 60 days
  • Transformed size: 9 - 11 mm
  • 
  • LTRF 2/3; narrow midventral gap in marginal papillae absent; eyes lateral; P-3 medium to short, P-2/P-3 > 1.2; east of Mississippi River
  • LTRF 2/3; narrow midventral gap in marginal papillae absent; eyes lateral; east of Mississippi River regardless of size, stage or range, notable colors or patterns in Section 10 absent; P-3 short, P-2/P-3 > 1.8; lateral surface of tail muscle distinctly bicolored
  • body darkly pigmented; white ventral portion of tail coloration about 50% of basal muscle height and demarcation between them is distinct; pale (silver to orange) line of iridophores from eye to tail junction (largely disappear in preservative) sometimes extends onto tail to form pale stripe above black portion; throat distinctly pigmented, usually in spots; P-2/P-3 ca. > 3.0; spring breeder in temporary or permanent forest swamp pools in central Coastal Plain of Virginia to northeastern Georgia coast
  •  
  • throat pigmented uniformly dark; P-2/P-3 > 3.0; length of one side of A-2/width of medial gap ca. 1.0; to 35 TL; lower jaw sheath narrow; midventral marginal papillae uniserial; submarginal papillae lacking; white ventral portion of tail coloration about 50% of basal muscle height; pale (silver to orange) line of iridophores from eye to tail junction (largely disappear in preservative) sometimes extend onto tail to form pale stripe above black portion; chin and throat distinctly pigmented, usually in spots; spring breeder in temporary or permanent forest swamp pools in central Coastal Plain of Virginia to northeastern Georgia
• Range:
  • In North America, it ranges from southeastern Virginia to eastern Georgia
  • In Georgia, it is found in the southeast part of the state.
    
  • In Light Blue: Williamson, Gerald K. & Moulis, Robert A., Distribution of Amphibians and Reptiles in Georgia, Special Publication No. 3, Savannah Science Museum, Inc. Savannah, Georgia, 1994
  • In Green: Sound Recordings
  • In Yellow: From Both '94 study and Sound Recordings
  • In Magenta: Photograph, not found by '94, may or may not be sound record
  • In Medium Blue: Photograph and in '94 study, may or may not be sound record 
  • In Orange: County Record by other Herp Atlas Volunteers
  • In Red: US Distribution from various sources

May 25, 2008 - wwknapp@mindspring.com