they eat small insects and leaves
The peach-potato aphid eats the leaves of trees like the peach tree. This insect can cause a lot of damage to trees as well as crops.
An apple aphid is a bright green aphid which feeds on the leaves of apple trees, causing disfigurement.
Usually on leaves
Actually they eat live leaves (green).
Aphids are the most likely suspects for feeding on and disfiguring your sedum plant. Either the black sedum aphid or the melon aphid may be hiding beneath the leaves and buds of a sedum plant.
They eat dead leaves and ants.
Ladybugs eat aphids.
No they do not they feed on dead leaves
Asians
Earthworms eat dead or rotting leaves.
An apple aphis is an alternative name for an apple aphid, a bright green aphid which feeds on the leaves of apple trees, causing disfigurement.