Southern Tree Agama

Acanthocercus atricollis

The black-necked agama is a species of tree agama that is native to East, Central and southern Africa. Its largest continuous range is in southeastern Africa, and it occurs at high densities in the Kruger National Park.
Acanthocercus atricollis - South Africa  Acanthocercus atricollis,Black-necked agama,Fall,Geotagged,Limpopo,Lizard,Mabula,South Africa

Appearance

The sexes have a comparable snout-to-vent length and have similar tail lengths. Mature males have somewhat larger heads than females, which is deemed to be an adaptation for intraspecific competition for territory. Females reach sexual maturity when about 96 mm long and males from about 82 mm.
I'm brightly coloured, but do you only see me? Males of this Black-necked Agama - Acanthocercus atricollis can be brightly coloured whereas the females have colouration that camouflage well on the trees. Acanthocercus atricollis,Agama,Black-necked agama,Geotagged,Hluhluwe,KwaZulu Natal,Lizard,South Africa,Winter

Reproduction

Reproduction is seasonal. Testicular volume of males reaches a maximum during August to September, and follicles of females become enlarged during August to December. Females lay a single clutch per annum, about 11 eggs on average, and larger females produce larger clutches than smaller females.
I'm part of the tree Black-necked Agama - Acanthocercus atricollis, female. Acanthocercus atricollis,Agama,Black-necked agama,Geotagged,Hluhluwe,KwaZulu Natal,Lizard,South Africa,Winter

Food

They subsist on an insect diet, which consists mainly of orthopterans, beetles and ants. Their full diet encompasses various orders of arthropods. They also eat millipedes, which other lizard taxa tend to avoid. Gut contents reveal many ants and some beetles. A large volume of orthopterans is consumed, followed by beetles and ants. Juvenile diet is dominated by ants, though beetles and orthopterans are also taken. Prey diversity and volumes fluctuate seasonally.

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Taxonomy
KingdomAnimalia
DivisionChordata
ClassReptilia
OrderSquamata
FamilyAgamidae
GenusAcanthocercus
SpeciesA. atricollis
Photographed in
South Africa