Thursday 31 January 2019

Orchard Swallowtail Papilio aegeus

And now a garden butterfly.

There is no need to go bush in the heat to see butterflies as in the previous two posts. I was sitting on the verandah having a coffee when I saw this lady fly in over the shrubs and begin circling the lemon trees.

She was obviously looking for somewhere to lay her eggs as she was dipping into the foliage, landing here and there searching for the perfect spot. Then she took a break and caught some sun on her back for a few minutes. That was when I saw how ragged her wings were.

Especially her left hind wing. She was an old lady, probably laying the last of her eggs.

She concentrated her attention on the very tips of the youngest leaves, bending her abdomen as she clung to the leaf edges.

And that was where she left her eggs, precariously perched right on the edges. Out of reach of most predators, I expect.

This spot had been used before by someone else. She was busy on a leaf while an egg previously laid by another butterfly lay out of her sight - the tiny black speck. I think this was an egg laid by a butterfly I watched laying eggs on the same tree a few days ago - a Dainty Swallowtail Papilio anactus. The egg is dark because the larva inside is well developed and likely to hatch imminently. Both species of swallowtail are common throughout the east of Australia and we have them in the garden every year.

Meanwhile over on another leaf, once I began looking carefully for more eggs, I found this teeny weeny caterpillar, c3 mm long, a first instar of a Dainty Swallowtail, I think. It is so small I can hardly make out any characteristics. Although the colouring, like a bird dropping, fits that of a young larva of the swallowtail species. This one had probably only hatched that day, eaten its eggshell and was now on the prowl for fresh greenery to eat. Hence the adults selecting the freshest leaves to lay their eggs on.


After a while the old lady flew over to the shady trees and landed on the foliage, taking a rest after her hard work? I'll watch over her offspring for her.


Tuesday 29 January 2019

More hot - more butterflies

It's still hot in Canberra, so over the weekend I was down at the coast where it was a little cooler, less hot. Snorkeling was good, nice and really cool, it's cool to hang out with fish. Otherwise, up on the land I went for a walk through the coastal heathland and found lots of butterflies. So, I have added here some photographs of the few I managed to photograph with the pocket camera, to complement the previous post. With thanks to Suzi Bond for identifying these for me. 

This Brown Ringlet Hypocysta metirius, like several others I saw, was basking on the path through the heath, always on a leaf which they so closely resembled. 

This is one of many Blotched Dusky-blues Candalides acasta that were sunning themselves in the herbage at the edge of the path, landing on sunlit spots, mostly on sedges or occasionally, like this one, on a dead casuarina twig. 

Her grey underwings fitted in well with the grey dead sticks and seadheads.

The best find of the day for me was out on the sunnier, shorter, and more luxuriant heath. That's where I saw a string of Eastern Iris-skippers Mesdina halyzia along the path. Each seemed to have a territory and would fly out whenever a neighbouring butterfly encroached on its stretch of the path. The open ground or more importantly, the open airspace above, seemed to be prime property. They behaved as if they had sorted themselves out though, as once I had passed they all settled back in their own stretch of the street.

I like the way skippers hold their wings in that ready-for-action pose.


Monday 28 January 2019

Hot sunny weather - butterfly weather

Eye-spots on a Meadow Argus' Junonia villida wings

It has been hot in Canberra for the past month and much of the wildlife has been lying low to keep cool. But it has been good for butterflies and I have met hundreds, thousands, of them on walks in various parts of the bush around the city.

The mornings have been especially good to see them close up and still, before they warm up and fly about too quickly to identify. And footpaths make ideal sunny spots for them to spread their wings and bask in the sun. I was walking through clouds of butterflies in places.

The season is well on and some were a bit tattered with broken edges to their wings.

Once they had warmed up, I found it easier to sit still near a bush or herb that was in flower and wait for the butterflies to settle and feed. I am always amazed at how they can guide their long thing probosces into the narrow tubes of flowers to reach the nectar. Precision feeding.

A Chequered Copper Lucia limberia basks on a path. A male, as he has single spots on his upper-forewings. The females have two spots on each wing. These seem to have been especially abundant in Canberra this year.

The undersides of the Chequered Coppers' wings are similar to various species of blue butterflies, but the flash of orange on the forewings identifies them.

A Stencilled Hairstreak Jalmenus ictinus hangs from a grass flower-head, giving a clear view of the tails on its hind wings.

The tails are less obvious, and even the whole insect is hidden, when they perch in a cluster of flowers. This one had warmed up, so do go early for good clear views of butterflies when they are still either on the ground or plants.

Sunday 30 December 2018

Fantastic Phasmid

This Titan Stick Insect Acrophylla titan was in our garden yesterday, he probably still is, but I can't see him. His two long antennae are tucked in between the front legs, which have a ragged, leaf-like form.

The thorax and legs had thorn-like spines which also made him resemble a true twig.

Acrophylla stick insects are well named as they favour the highest foliage of eucalyptus trees to feed on, acro being Greek for highest or topmost. So I don't know why this one was down in at our lowly level. The tall yellow box in the front garden, which spreads over where he was hiding, is about 20 m tall. He was about 20 cm long.

His eyes had cryptic colour bands around them, and there was a tiny mite clambering around them.

Seen from below, his head was just as spectacular, with an intriguing array of mouth parts. Why does a vegetarian need such a complicated eating system, I wonder. They only eat leaves.

His wings are on the last section of the thorax, but extended over the fore part of the abdomen. The vestigial wings on a female only extend as far back as the last pair of legs. Although his wings are small for his size, the males can fly. The females cannot. I think this one must have flown away as I left him in one small tree and after dusk he had gone, not in the tree. And yes I am sure he wasn't there. They are nocturnal feeders.

And look at those fantastic feet. He has two hooks and a gripping pad on each one, so over six legs, that's a lot of sticking ability. No wonder they are such good climbers and like to be high.

Friday 14 December 2018

Big rain


Droplets of rain hang from eucalyptus flowers in the garden. 

More than 50 mm of rain fell on Canberra yesterday, 29 mm before 0900 hr and final figures not in yet. A great relief after such a long dry winter and spring, but I would rather less fell more frequently to give the land a chance to re-invigorate itself, the plants to grow and animals to prosper. Too much rain at once is of limited good.

During a break between the heaviest downpours, the water clung tight, running slowly down the long tapering leaves.

Eucalyptus bark shines when wet. Many species of eucalypt cast their bark in summer and these had only just begun to do so.

The old bark of this tree has been heavily scratched by possums who climb these trees every night. A new skin is long overdue.

While I was out between showers, I checked the leaves of the silk tree for eggs or small caterpillars of Tailed Emperor butterflies. These magnificent butterflies have laid eggs on, and new adults have successfully flown from this tree in most recent years, so I was anxious that any eggs or caterpillars might have been lost in the torrential rain. No sign, but expect updates to the blog when they do appear.

The flowers on the silk tree had only began to open the day before, and in the rain their finery looked rather bedraggled.

Wet pink fur-balls.