Florida Cricket Frog (Acris gryllus dorsalis)
Order Anura, Family Hylidae, Genus Acris, Species Acris gryllus. This is a member of the tree frog family, but unlike typical tree frogs, it is predominantly terrestrial.
Species
Florida Cricket Frog (Acris gryllus dorsalis)
Family
Order Anura, Family Hylidae, Genus Acris, Species Acris gryllus. This is a member of the tree frog family, but unlike typical tree frogs, it is predominantly terrestrial.
Size
One of North America's smallest frogs, with an adult SVL ranging from 0.75 to 1.5 inches (19-38 mm). Females are slightly larger than males. They are exceptionally light, weighing only a few grams.
Conservation
Listed as Least Concern by the IUCN. While generally stable and abundant in Florida, they are sensitive to habitat fragmentation and water pollution (herbicides and pesticides).
Description
The Florida Cricket Frog is a master of camouflage, blending perfectly into the mud and leaf litter of the southeastern wetlands. Despite its tiny stature, its voice is a defining sound of the Florida summer. It is a 'tree frog that doesn't climb,' having traded the high canopy for the rich, bug-filled margins of the swamp.
Key Features
Pointed snout, triangular mark between the eyes, granular skin, and a frequent colorful dorsal stripe (red, green, or brown) on a brownish body.
Physical Description
A very small, slender frog with a pointed snout and long, thin hind legs. The body is somewhat flattened for hiding in crevices. The eyes are large and protruding with round pupils. Toe pads are present but very small and inconspicuous compared to arboreal tree frogs.
Skin Texture & Coloration
Skin is distinctly granular or warty rather than smooth. Coloration is highly variable, usually earthy tones of brown, gray, or tan with darker blotches. Many individuals, like the one pictured, feature a bright red, green, or rusty dorsal stripe running from the snout to the vent. Ventral side is typically white or cream.
Distinguishing Features
The primary diagnostic marker is a dark, triangular or 'V' shaped mark on the top of the head between the eyes. They also possess a dark stripe on the back of the thigh and a lack of extensive webbing on the hind feet compared to the Northern Cricket Frog.
Habitat
Found near the edges of permanent and semi-permanent water bodies, including cypress swamps, marshes, roadside ditches, and pond margins. They prefer areas with plenty of vegetation and soft, muddy substrate.
Geographic Range
Commonly found throughout the Florida peninsula and extending into parts of Georgia and South Carolina. It is a subspecies of the Southern Cricket Frog (Acris gryllus).
Behavior
Primarily diurnal but also active at night during the breeding season. Known for their incredible jumping ability; despite their small size, they can leap over 36 inches to escape predators. They often jump into water and immediately swim back to the shore to hide.
Diet & Feeding
An active insectivore that foragers for small invertebrates such as ants, beetles, midges, collembolans, and spiders. They use a 'sit-and-wait' or short pursuit strategy along the water's edge.
Reproduction
Breeding occurs mostly from April to September but can happen year-round in Florida. Males call from the ground or low vegetation near water. Eggs are laid singly or in small clusters attached to submerged plants. Development is rapid.
Vocalizations
The call is a series of sharp, metallic clicks resembling two marbles or pebbles being tapped together: 'glick, glick, glick.' The tempo starts slow and accelerates.
Life Cycle
Eggs hatch into small, dark-tailed tadpoles within days. Metamorphosis occurs in 50 to 90 days. Juveniles are tiny replicas of adults and reach sexual maturity within their first year. Lifespan in the wild is short, often only 1-2 years.
Conservation Status
Listed as Least Concern by the IUCN. While generally stable and abundant in Florida, they are sensitive to habitat fragmentation and water pollution (herbicides and pesticides).
Toxicity & Defense
Non-toxic to humans. Defense relies entirely on cryptic coloration (camouflage) and explosive erratic jumping to confuse predators like snakes and birds.
Ecological Role
Serves as a vital link in the food chain, converting massive amounts of small invertebrate biomass into a food source for larger predators like wading birds, snakes, and larger frogs.
Similar Species
The Northern Cricket Frog (Acris crepitans) has more extensive webbing on the toes and a slightly more blunt snout. The Southern Cricket Frog (Acris gryllus gryllus) is nearly identical but geographically separated.
Observation Tips
Walk slowly along the muddy edges of ponds on sunny days; they will frequent the shoreline and jump when approached. They are most easily located by following their marble-clicking call during the summer months.
Handling & Safety
Safe to handle, but their skin is very delicate. If handling is necessary, ensure your hands are wet and free of lotions or repellents. They are very fast and can easily escape a loose grip.
Seasonal Activity
Active year-round in the southern portions of its range, with peak activity and breeding during the warm, wet months of the Florida summer.
Cultural Significance
Often used as an indicator species by biologists because their permeable skin and reliance on both land and water make them highly sensitive to environmental toxins.
Interesting Facts
The genus name 'Acris' comes from the Greek word for locust, referring to their cricket-like chirping call and their impressive jumping prowess.