The Pioneer Caper White -
Belenois aurota, also known as the Brown-veined White is one of the commonest butterflies seen on the farm, particularly early season, when there is an annual migration of these and other pierids. 2022 was an extremely strong migration year with millions of butterflies passing on a daily basis for around a month – this season occurring in December and as usual, the butterflies were heading east, originating from the drier western parts of the country.
On top of the mountain
Belenois aurota - Pioneer Caper White - female
Two particular moments from the migration stick in my mind, the first a visit with my father to a particularly well placed mountain top. It’s a stiff walk through some thick bush and rocky terrain to reach this peak, but well worth the effort because along with the migrating pierids, many other butterfly species like to also visit the area for their hill topping activities. Dog fighting Charaxes can always be relied upon to put on an exciting show and in the surrounding trees sapphires, both Trimens and Straight-lined along with Bowker's Marbled will set up their territories late morning. However on this day the whites were what we hoped to see.
Belenois aurota and
Belenois creona severina mud puddling
Belenois aurota - Pioneer Caper White - mating pair
The Pierids use the range of hills, part of the Witfonteinrand which runs through the farm, as a sort of flight road, with the mountain peak we visited the last, before they drop down to a lower altitude and have a number of options of direction to take, whether it’s along one of the valleys, or up and over another mountain. So because of this flight path concentrations of migrants are particularly high in this small area, meaning it’s the perfect place to spend a couple of hours late morning to watch the spectacle unfold.
Belenois aurota - Pioneer Caper White,
Belenois creona severina - African Pioneer White,
Pinacopteryx eriphia- Zebra White and unidentified orange tip.
Belenois creona severina - African Caper White,
Belenois aurota - Pioneer Caper White and Banded Gold Tip -
Teracolus eris eris
On the day we visited the butterflies didn’t disappoint and a very strong stream of Pioneer Caper Whites, African Caper Whites, Banded Gold Tips, African Migrants, Zebra Whites and many more species continuously streamed past. By far the most numerous were the Caper Whites, all heading east, determined to reach an unseen and unknown destination. Rough calculations were made and in our sight area – perhaps a corridor 70 yards either side of where we sat, around 250000 butterflies passed each hour. Studying the scene further afield with binoculars showed nearly as mainly butterflies passing along other points of the mountainside, and actually throughout the whole surrounding landscape. Millions were flying and it seemed our visit coincided with the peak of the migration, so it actually didn’t matter where we were sitting. Everywhere whites streamed by in vast numbers.
Belenois aurota - Pioneer Caper White
Belenois aurota - Pioneer Caper White - Female
The second memorable migration moment of this season was at a small earth dam at the lower end of a large valley from where the farm gets its name – Buffalo springs. High up in the hills is a hanging valley which acts like a giant water collection receptacle, and at the lower end ground water flow is blocked by a large krans (cliff) where a spring issues forth. The water tumbles down the krans, enters the ground at the base of the rock and then re-emerges 700 metres lower down the main valley where another band of rock blocks the flow. Here is the small earth dam which is filled in the spring and the remains full usually until mid- summer. When the dam is full, the water seeps through the earth wall and then runs through a series of rock pools before cascading down a small cliff. Incidentally, both these rock emergences are excellent places to see fig tree blues because their food plants grown in these areas.

The small dam is situated in at open grassy glade and is a perfect collection spot for butterflies – normally many are visiting for mud puddling but on the day I visited far more were in attendance. Arriving mid-morning, I parked my bike a few hundred metres below the dam and walked the last few hundred metres of the rough and rocky track, being greeted along the way by many spotted jokers and Guineafowl playing about, as usual in the long grass either side of the path. Then over the brow of the rocky ridge an awe inspiring sight was waiting for me. The clearing was absolutely full of butterflies, a true kaleidoscope of dancing butterflies of all colours and sizes, although the scene was dominated by the migrating whites. Every second I watched hundreds upon hundreds of whites were tumbling down from the surrounding mountainsides to fill the clearing. Some continued without stopping but many descended to the mineral rich wet mud around the dam where they sat and sucked salts and minerals. Apart from the Pierids many other species flitted around the area – many Charaxes, huge numbers of lycaenids, skippers, acraeas, swallowtails and more.

Belonois aurota - Pioneer Caper White
It was difficult to take in the sheer amount of life present in that small area because of course it wasn’t just butterflies flying around. Thousands of other insects were making use of the wet mud, water and sunshine, and then also there were those preying on the these. In the centre of the clearing grows a small Marula tree (
sclerocarya birrea) and at the base is a flat rock perfect for sitting upon. Here I spent a few hours soaking up the scene, aware of how incredibly lucky I was to be experiencing such a sight. The Pierids came non-stop and their tumbling flight into the area reminded me of blossom falling from cherry trees in a gentle breeze. And while watching I wondered about the journey of these butterflies, the sights they would see and places they would pass and the risks and hazards faced along the way. And of course I hoped with all my heart to see such scenes long into the future.
Belenois creona severina - African Caper White - female
African Caper White –
Belenois creona severina isn’t as common as the Pioneer caper white on the farm but is usually seen in good numbers throughout the year and will be mixed in with the other migrating whites. Like the former, a keen mud puddler and also settling on the right flowers for nectaring. Colours of this butterfly vary from dry to wet season, with the wet season forms having beautiful lemon coloured undersides whereas the dry season forms are more uniformly cream.
Belenois creona severina - African Caper White - male
African Migrant –
Catopsilia florella is a very familiar butterfly across the country and also all through Africa, flying year round. Powerful in flight, it is unmistakable with its direct and slight bobbing flight pattern. Rich and vibrant colours – the male being pale green/white similar to that of the English female brimstone, while the female is usually dark yellow irrorated with browns. The female comes in three forms, one being a very similar colour to the male so it pays to look closely when trying for an identification. During good years huge numbers of this butterfly will also join in with the annual migration.
Catopsilia florella- African Migrant female
Catopsilia florella - African Migrant male
A very common and familiar pierid around the farm is the beautiful Common Dotted Border which will be encountered in many of the habitats although its strongholds are in wooded shaded areas. The Common Dotted Border is a delicate butterfly which flutters and sails when on the move, often seen playing around the canopies of large trees - also very fond of mud puddling and necataring. Unfortunately when mud puddling this species loses all its fear and often i've seen specimens squashed by animals feet or vehicles passing a leak on the track. The Common dotted border has many food plants, with one of the main being various mistletoes of the
Tapinanthus genus.
Mylothris agathina agathina - Common Dotted Border
Mylothris agathina agathina - Common Dotted Border - mud puddling
Mylothris agathina agathina - Common Dotted Border
As a little extra I wanted to post a couple of photos of the larvae of
Gonimbrasia belina I was lucky enough to find a couple of years ago. This species, as far as I know, isn't particularly common on the farm and this was the first time I saw the larvae. They were feeding on a Marula
(sclerocarya birrea) tree close to the road and to start with I didn't actually see them, but rather I smelt them! The tree was covered in larvae which were in their final instar and almost ready to leave and pupate. On the ground under the tree was so much frass that it was almost impossible to miss the very distinctive smell! And so using the smell as a guide I soon located the tree and numerous beutiful and distinctive caterpillars. Some had already started on their march to pupation sites and the tree trunk was a mini highway of multicoloured spikey caterpillars on their way south!
These caterpillars are of course the famous Mopane worm which is an esteemed delicacy to many people of Zimbawe, Botswana and South Africa. Collected and dried, they provide valuable protein and apparently taste quite nice! I collected a handful and took them home, but did not have the heart to dry and eat them, rather I let them pupate with the hope to see the moths emerge. But unfortunately they didn't hatch in time before I left for Europe.
Mopane worm -
Gonimbrasia belina - on its way down the host tree
Mopane worm -
Gonimbrasia belina - crossing the track to search for pupation site
Mopane worm -
Gonimbrasia belina - a good handful!