''Leptopelis vermiculatus'', also known as the peacock tree frog, Amani forest treefrog, or vermiculated tree frog, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

found in

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

areas in

Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...

. Sometimes the common name big-eyed tree frog is used, but this may also refer to another species, ''

Leptopelis macrotis ''Leptopelis macrotis'', sometimes called the big-eyed forest tree frog, is a species of frog in the family Arthroleptidae. It is found in the rainforests of Sierra Leone, southern Guinea, Liberia, Ivory Coast, and southern Ghana. Notice that sim ...

''.

Description

This species is a medium to large frog ranging from 40–85 mm in length. It has two very different colour phases. In one phase, they are a bright

green Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 Nanometre, nm. In subtractive color systems, used in painting and color printing, it is created by ...

with scattered

black Black is a color which results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white have o ...

specks all over the

dorsal Dorsal (from Latin ''dorsum'' ‘back’) may refer to: * Dorsal (anatomy), an anatomical term of location referring to the back or upper side of an organism or parts of an organism * Dorsal, positioned on top of an aircraft's fuselage * Dorsal co ...

surface and the sides are marble with black and

white White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on ...

. With some specimens, the end of the

tibia The tibia (; ), also known as the shinbone or shankbone, is the larger, stronger, and anterior (frontal) of the two bones in the leg below the knee in vertebrates (the other being the fibula, behind and to the outside of the tibia); it connects ...

to the toes, forearms and upper lip have white blotching outlined with dark green or black. In the other phase, they are

brown Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing or painting, brown is usually made by combining the colors orange and black. In the RGB color model used ...

with an irregular-shaped, darker brown triangular patch on the dorsum. Randomly placed darker or lighter brown spots and patches may appear over the dorsal surface, legs and forearms and a dark brown streak often runs from behind the tympanum ending halfway between the

armpit The axilla (also, armpit, underarm or oxter) is the area on the human body directly under the shoulder joint. It includes the axillary space, an anatomical space within the shoulder girdle between the arm and the thoracic cage, bounded superiorl ...

and

groin In human anatomy, the groin (the adjective is ''inguinal'', as in inguinal canal) is the junctional area (also known as the inguinal region) between the abdomen and the thigh on either side of the pubic bone. This is also known as the medial comp ...

. In both phases, the ventral surface is cream-white. Some specimens show a transition between both phases and change from the green phase to the brown phase as they mature. The

eye Eyes are organs of the visual system. They provide living organisms with vision, the ability to receive and process visual detail, as well as enabling several photo response functions that are independent of vision. Eyes detect light and conv ...

s are very big compared with body size and are golden with brown lines and flecks. Its large toe pads are used for climbing. The tympanum is distinct. They are sometimes kept as pets.

Ecology and behaviour

This species inhabits the closed-canopy wet tropical

rainforest Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...

s of Tanzania between the altitudes of 900 and 1800 m. Males call while in the water, and are very territorial. They have two different calls: one is a “ga…ga…ga”, used for attracting females, and the other is a “rrrrrrrr-ga” used for deterring other males of the same species. They are

insectivorous A robber fly eating a hoverfly An insectivore is a carnivorous animal or plant that eats insects. An alternative term is entomophage, which can also refer to the human practice of eating insects. The first vertebrate insectivores were ...

Similar species

This species is very similar to the yellow-spotted tree frog (''

Leptopelis flavomaculatus ''Leptopelis flavomaculatus'' is a species of frog in the family Arthroleptidae. It is found in the lowlands eastern and southern Africa, from Mozambique north of the Save River and Zimbabwe to Malawi, eastern Tanzania (including the island of ...

''), a species that also varies greatly in dorsal patterning and colouration. The yellow-spotted tree frog, in its green phase, lacks the fine black specks present over the dorsum in the big-eyed tree frog's green phase. The brown phase of the yellow-spotted tree frog has a white blotch on the elbow, which brown-phase big-eyed tree frogs lack.

References

AmphibiaWeb - ''Leptopelis vermiculatus''Global Amphibiam Assessment - ''Leptopelis vermiculatus''
{{Taxonbar, from=Q1525786 vermiculatus Frogs of Africa Amphibians of Tanzania Endemic fauna of Tanzania Amphibians described in 1909 Taxa named by George Albert Boulenger