Eastern common cuscus vs Ground cuscus

What is the difference between a eastern common cuscus and a ground cuscus?

Each point below is worked out from a pair of recorded values.

The ground cuscus is heavier: 2.6 kg against 1.75 kg for the eastern common cuscus, about 49% more.
The ground cuscus is longer-lived: 18.9 years against 4.08 years for the eastern common cuscus, about 4.6 times the lifespan.
Both belong to the genus Phalanger, so they are close relatives.
Both are listed as Least Concern on the IUCN Red List.
They are on record for 1 of the same countries (the eastern common cuscus for 1 in total, the ground cuscus for 1). Country data is incomplete and can include zoos, so this does not show whether they meet in the wild.

	Eastern common cuscus	Ground cuscus
Scientific name	Phalanger intercastellanus	Phalanger gymnotis
Family	Phalangeridae	Phalangeridae
Order	Diprotodontia	Diprotodontia
Weight	1.75 kg – 2.1 kg	2.4 kg – 2.6 kg
Length	Not recorded	Not recorded
Lifespan	4.08 years	18.9 years
Main food	Not recorded	Not recorded
Habitat	Not recorded	Not recorded
Conservation status	Least Concern	Least Concern
Countries recorded	1	1

Eastern common cuscus

Ground cuscus

Scientific name

Phalanger intercastellanus

Phalanger gymnotis

Family

Order

Weight

1.75 kg – 2.1 kg

2.4 kg – 2.6 kg

Length

Not recorded

Lifespan

4.08 years

18.9 years

Main food

Not recorded

Habitat

Not recorded

Conservation status

Countries recorded

A scale drawing needs a recorded length for both animals; only weights are on record for this pair.