New Jersey Chorus Frog
Pseudacris kalmi

Common Name:

New Jersey Chorus Frog

Scientific Name:

Pseudacris kalmi



Pseudacris is derived from the Greek words pseudes meaning false and akris meaning locust.


kalmi is in honor of Pehr (=Peter) Kalm (1716-1779)

Average Length:

0.8 - 1.5 in. (2.9 - 3.9 cm)

Virginia Record Length:

Record length:

Virginia Wildlife Action Plan Rating Tier IV - Moderate Conservation Need - The species may be rare in parts of its range, particularly on the periphery. Populations of these species have demonstrated a significant declining trend or one is suspected which, if continued, is likely to qualify this species for a higher tier in the foreseeable future. Long-term planning is necessary to stabilize or increase populations.

PHYSICAL DESCRIPTION: This species is generally more robust than the upland chorus frog which ranges in size from 1.9 to 3.9 cm (3/4 to 1-1/2 inches). Dorsal stripes are broad and well-defined. There is also a dark lateral stripe that runs from snout to groin. This stripe is variable. There may also be a dark triangle or other dark figure between the eyes. There is always a light line on the upper lip. The dorsal ground color varies from pale gray to dark brown but may also be a dull green or olive. The markings are a darker shade of gray. The ventral surfaces are whitish and are either plain or sparsely spotted. The best means to distinguish this species from other Pseudacris triseriata subspecies is geography *11407*. In Virginia, this species is limited to the Eastern Shore/Delmarva Peninsula *11332* *11407*.

REPRODUCTION: This species breeds in early spring from February to about April. It requires shallow bodies of water for breeding and tadpole development. The male's mating call is a vibrant, repeated "crreek" or "prreep" that rises in pitch and speeds up near the end and is compared to the sound of running a finger along the fine teeth of a comb *11407*. BEHAVIOR: This species requires shallow bodies of water for breeding and metamorphosis *11407*.

ORIGIN: Native


AQUATIC/TERRESTRIAL ASSOCIATIONS: This species is found in a wide variety of habitats including areas that are dry and/or heavily affected by human activities. Shallow bodies of water are required for reproduction and tadpole metamorphosis *11407*.

Life History Comments: Some of the life history information given above was taken from descriptions for the western chorus frog (Pseudacris triseriata triseriata). Discriminating between the subspecies of Pseudacris triseriata is largely defined through geographic distribution *11407*.

References for Life History

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


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Verified County/City Occurrence

Accomack County
Northampton County
Verified in 2 Counties/Cities.

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