Hyperolius spinigularis
Kingdom
Phylum
Class
Order
Family
Genus
SPECIES
Hyperolius spinigularis

Hyperolius spinigularis is a species of frog in the family Hyperoliidae. It is found in the Mulanje Massif in southern Malawi and the Namuli Massif in adjacent Mozambique. Records from Tanzania refers to other species. Males of this species have characteristic small spines during the breeding season. Its common names are spiny-throated reed frog, spiny reed frog, and Mulanje reed frog.

Appearance

Males measure 19–23 mm (0.75–0.91 in) and females 24–31 mm (0.94–1.22 in) in snout–vent length. In addition to sexual dimorphism in size, males can be distinguished during the breeding season by the presence of prominent black asperities (spines) that cover the throat, mentum, abdomen, and undersurfaces of the hind limbs. The head is broad and has protruding eyes; the pupil is horizontally elliptic. All females and most males are pale apple-green and dorsally covered with minute brown chromatophores that under certain light conditions can almost mask the ground colouration. The ventrum is a pale translucent blue-green, becoming silvery white over the abdomen and an opaque blue-green on the gular disc. The hands and feet are pale yellow. However, a small fraction of males have red-brown ground coloration on both the dorsum and ventrum, with the extremities of the limbs being pale red. Also the pale cream or white dorsal patterning is variable but unrelated to sex. A white cantho-dorso-lateral band is the most common type, while some individuals have only an irregular and often broken dorso-lateral band, as well as a sub-triangular frontal patch.

Show More

Newly metamorphosed froglets measure 12.7–14.1 mm (0.50–0.56 in) SVL.

Show Less

Geography

Continents
Biogeographical realms

Habits and Lifestyle

The breeding season is short, from late December to mid March, during the last rains. Males appear on the breeding sites before females. Vocalization were not observed in the natural habitat, even though captive males were occasionally observed to vocalize. The eggs are deposited on leaves above water. One female was observed to return to her eggs and to eject watery fluid over the egg mass from her vent.

Show More

Hibernation has been observed in captive specimens. Prior to hibernation, frogs lose interest on food and become less active, before finally concealing themselves among the roots of grasses near the waterline. They position themselves head uppermost, often with the hind parts touching the water or even partly submerged. This behaviour has not been observed in the field, but its timing in captive specimens coincides with the disappearance of frogs from their breeding sites in the wild.

Show Less
Lifestyle
Seasonal behavior

References

1. Hyperolius spinigularis Wikipedia article - https://en.wikipedia.org/wiki/Hyperolius_spinigularis
2. Hyperolius spinigularis on The IUCN Red List site - https://www.iucnredlist.org/species/69119640/69119416

More Fascinating Animals to Learn About