Order Salientia is represented on Mount Desert Island by 8 species in 4 genera in 3 families:
   Bufonidae (1 species) - Bufo americanus (American toad). This species can be distinguished from other members of Order Salientia by the presence of paratoid glands.
   Hylidae (2 species) - Hyla versicolor (gray treefrog) and Pseudacris crucifer (spring peeper). Both of these species have round toe pads.
   Ranidae (5 species) - Rana catesbeina (bullfrog), Rana clamitans (green frog), Rana palustris (pickerel frog), Rana pipiens (northern leopard frog), and Rana sylvatica (wood frog). Members of this family do not have paratoid glands, and their toes taper to a point.

Pseudacris crucifer (spring peeper): The vocalizing of the spring peepers are a sure sign of spring and are usually heard within days after the first wood frogs. Below are the dates of first reports of the peeping of spring peepers.    2008       April 12 - Southwest Harbor, along Route 102 south of "long hill" (reported by Champlainer TFV)       April 14 - Bass Harbor, wetland along east side of Route 102A and just south of intersection with Gray Barn Road (reported by Champlainer TFV)

[Does anyone have a picture of a spring peeper?]

Rana clamitans (green frog): The green frog, whose call sounds like the plucking of a loose banjo string, can most easily be identified by its lack of features possessed by other members of the family. It does not have the spots of Rana palustris (pickerel frog; see photo below) and Rana pipiens (northern leopard frog); it does not have the dark brown "face mask" of Rana sylvatica (wood frog); and its dorsolateral ridges (the two raised strips on its back) do not each curve around a tympanum as they do on Rana catesbeina (bullfrog). This photo was taken on 8 August 2007 along Seal Cove Road by Alison P. Bell.

Rana palustris (pickerel frog): The pickerel frog and the northern leopard frog are the only frogs on Mount Desert Island with spots. The spots of the pickerel frog (see photo at right) are squarish and in two more or less parallel lines along the frog's back. This photo was taken on top of Pemetic Mountain in the town of Mount Desert by Alison P. Bell.

Rana sylvatica (wood frog): The wood frog is usually the first frog in our area to be heard vocalizing. The sound is often described as quacking or clacking. Below are the dates of first reports of wood frog calls.    2008       April 7 - Bar Harbor area (reported by COA student)       April 10 - Town Hill (reported by Champlainer Carol Muth)       April 14 - Big Moose Road, Bass Harbor (reported by Champlainer TFV) Wood frog egg masses have been seen at the following locations:    Bar Harbor: vernal pool along west side of pipeline path that runs more or less parallel with (and west of) Duck Brook Road - UTM: 19T 0560622, 4914822. Lat./Long.: N44° 23′2.9″ x W68° 14′20.2″. (19 April 2008; wood frogs also calling)    Bar Harbor: vernal pool along west side of pipeline path that runs more or less parallel with (and west of) Duck Brook Road - UTM: 19T 0560554, 4914759. Lat./Long.: N44° 23′0.9″ x W 68° 14′23.3″. (19 April 2008; wood frogs also calling)

[Does anyone have a picture of a wood frog?]