Blue Emperor
Anax imperator
Marié suggested a new ID:
Common name: Blue Emperor
Scientific name: Anax imperator
Lily Borer Caterpillar
Brithys crini crini
Marié commented:
Thank you for sharing Isabel! :-) This is a Lily Borer Caterpillar and unfortunately a terrible garden pest. They damage the stems and leaves of lilies, especially lilies of the family Amaryllidaceae, for example Clivias, Crinums, Narcissus, Belladonna Lilies and many other species.

Marié suggested a new ID:
Common name: Lily Borer Caterpillar
Scientific name: Brithys crini crini
Notes: Garden pest
Black-ringed Ladybird
Oenopia cuneata
Dok Tor suggested a new ID:
Common name: Blackring Lady Beetle
Scientific name: Oenopia cuneata
Notes: "Oenopia cinctella" is a junior synonym of Oenopie cuneata, and therefore an invalid name. You may use a pen when you correct your field guide.
Common Leopard
Lachnoptera sp.
Marié suggested a new ID:
Common name: Leopards
Scientific name: Lachnoptera sp.
Notes: My guess is African Leopard (Common Leopard)
Common Diadem
Hypolimnas misippus misippus
Marié suggested a new ID:
Common name: Common Diadem
Scientific name: Hypolimnas misippus
Notes: Female
Black Mealy Bug Predator
Exochomus sp.Gardenbane Weavil
Ellimenistes laesicollis
Marié commented:
Thank you for the ID Dok Tor.

Dok Tor commented:
Not Protostrophus (tribe Cneorhinini), but in fact a member of the tribe Embrithini.

Dok Tor suggested a new ID:
Common name: Gardenbane Weevil
Scientific name: Ellimenistes laesicollis
Notes: http://www.ispotnature.org/species-dictionaries/sanbi/Ellimenistes%20laesicollis
Banded Groundling
Brachythemis leucosticta
Marié commented:
Beautiful picture! ? Banded Groundlings remain inconspicuous while settled on the ground. When people or animals pass by, they spring into action, preying on insects disturbed in the process.

Marié suggested a new ID:
Common name: Banded Groundling (English), Gebande Gronwagtertjie
Scientific name: Brachythemis leucosticta
Cabbage White caterpillar
Pieris brassicae
Marié suggested a new ID:
Common name: Cabbage White (English), Koolwitjie (Afrikaans)
Scientific name: Pieris brassicae
Notes: Not 100% sure.

Marié commented:
Welcome to WhatSpecies Kim and thank you for sharing your observation. A close-up picture will make a positive ID more likely - it is a bit difficult to tell from this distance. But from the description it sounds like it could be the caterpillar of Pieris brassicae, a butterfly also known as Cabbage White. Large holes in the leaves of brassica crops and nasturtiums are usually the work of cabbage white caterpillars. Pieris brassicae is an alien butterfly in South Africa, and expanding its range at an alarming rate. If you'd like to see what the butterfly looks like, you can look here: Cabbage White
Cape Spittle Bug
Rhinaulax sp.
Dok Tor commented:
Sorry for typo: should be Rhinaulax. May be yellow form of Rhinaulax analis, as in PGW2004: 154.3.

Dok Tor suggested a new ID:
Common name: Cape spittlebug
Scientific name: Rinaulax
Notes: http://www.ispotnature.org/search/node/rhinaulax

Dok Tor commented:
Not Cicadellidae (leafhopper), but Cercopidae (round-eye spittlebug).
Cotton Stainer Nymph
Pyrrhocoridae
Dok Tor commented:
Not Ectrichodia crux. Perhaps not even Reduviidae. What about Pyrrhocoridae?