Category Archives: Invertebrates

Night life in the wattles

A venture into the bush with torch and camera on a cold night reveals a lot of life in the wattles. A Silver Wattle Acacia dealbata was being slowly combed by 5 mm long nocturnal Epaulet Ants, Notoncus hickmani. (Thanks to bowerbird.org.au for help with ID)

Epaulet ant - Notoncus hickmani

Epaulet Ant, Notoncus hickmani

Epaulet ant - Notoncus hickmani

Epaulet Ant #2

In the spectacularly flowering Golden Wattles Acacia pycnantha there was an abundance of tiny spiders from less than a mm long to much larger arachnids. On one leaf was a young and translucent Hunstman spider, about 20 mm across.

Spider up close

Hunstman

Much smaller, about 5mm long, was a Hamilton’s Orb Weaver Araneus hamiltoni hiding from my bright light in the blossoms.

Araneus hamiltoni

Hamilton’s Orb Weaver #1

Araneus hamiltoni

Hamilton’s Orb Weaver #2

More confidently staying in her web was this larger orb weaver, about 10mm long.

Orb weaver

 

Reliable Winter shelter

Winter deprives the macrophotographic addict of many subjects, although spiders are always easy to find. But lifting rocks is a pretty good way of finding some sedate sitters, even if it means rolling around on the damp ground trying to get a good angle. I found a few treats yesterday and one very special target that had evaded my lens thus far.

It all started close to our back door. The first rock that I lifted had numerous tiny (1-2mm), pale, slow-moving insects that looked disturbingly like termites (very close to the house). Even with reading glasses and  a good light I couldn’t pick it – only the wonderful Canon MP-E65 supermacro lens showed me the comforting view of these ants. They were scurrying as best as their cold bodies would to store their precious eggs.

Scouring Alex Wild’s great web site on ants, as well as google and Antwiki led me to believe they might be Doleromyrma. Any better identification would be much appreciated. I know from some ordinary tail-end shots that they don’t have an acidopore.

Doleromyrma?

Doleromyrma? #1

Doleromyrma?

Doleromyrma? #2

Another rock further in the bush at our place showed a busy nest of ants that look like ones previously identified as Rhytidoponera after a previous post on this blog. According to Antwiki, they will often nest under rocks and forage in trees, so this fits. They also mostly breed without queens, but workers will mate to produce a female brood. Happy to be corrected if I’ve got this wrong.

Rhytidoponera?

Rhytidoponera?

Under the same rock was this curious animal, about 15mm long and happily munching on the decaying material under the rock.

Under a rock - Soldier Beetle larva

What do humans call me?

But above all, I was thrilled to find what I consider to be one of the most beautiful animals of our bush, a Thick-tailed (or Barking) Gecko, hiding under a large flat leftover paver in our backyard. Can’t wonder too much about the scientific name for this one – Underwoodisaurus milii.

Thick-tailed Gecko (Underwoodisaurus milii)

Thick-tailed Gecko

Thick-tailed Gecko (Underwoodisaurus milii)

Is this my best angle?

Thick-tailed Gecko (Underwoodisaurus milii)

Or this?

The path to our door

There was quite a variety of treats in store for me on a trip back from Newstead to our place at Strangways last Saturday. First up was a beautiful foggy scene on the flats of the Jim Crow Creek.

Morning on the floodplain of the Jim Crow Creek at Strangways

Morning fog on Jim Crow Creek

As I drove up our lane, I was delighted to see a pair of Restless Flycatchers Myiagra inquieta hovering and catching insects. They have been a bit shy of the cameraman until this day when they let me get to within 5 metres whilst they hunted in the winter sun.

Restless Flycatcher (Myiagra inquieta)

Restless Flycatcher I

Restless Flycatcher (Myiagra inquieta)

Restless Flycatcher II

Restless Flycatcher (Myiagra inquieta)

Catching spiders as well as flies

A pair of Jacky Winters Microeca fascinans was also hunting along the fence line.

Jacky Winter (Microeca fascinans)

Jacky Winter

When I got home after quite some time rolling on the ground getting shots of the birds, for some unknown macrophotographic reason I put on my reading glasses and had good close look at the stone path to our door. I was impressed to find numerous tiny mites with white-spotted black bodies and orange legs. They were from 0.5-1mm long. And with them were some velvety looking grey grubs with six legs and again only 0.5-1mm long. They were quite challenging photographic subjects and I will keep working to try to get some good photos of them. At first I thought the grey ones might be tiny Velvet Worms, but from my reading they would need more legs to qualify. The people at bowerbird.org.au have identified it as a springtail, hexapods once classed as insects, but with internal mouths. The reading I’ve done says that they live on fungi, microbes  and other material in the leaf litter. I wonder if the mites could be Trombidiformes, but would really appreciate any help with identification of either. The grains in the sandstone path give an indication of their size, or lack thereof.

Mite_17-07-16_3

Mite

Tiny

Springtail

Mite and friend

Together

Under a rock, up a tree

Lifting a rock on our place at Strangways, will often show signs of those who live under it, but often they scurry off before I can get a good look at them, let alone a photo. I was pleased then with the variety of species that I found under one rock recently. The most obvious denizens of this netherworld were some Gold-tailed Toothless Bull Ants. It wasn’t until I’d found a match on bowerbird.org.au that I noticed the absence of serrations on the inside of the mandibles, hence the toothless descriptor. I’d never thought that a Bull Ant could be toothless!

Gold-tailed Toothless Bullant (Myrmecia piliventris)

Golden-tailed Toothless Bull Ant

Gold-tailed Toothless Bullant (Myrmecia piliventris)

Golden-tailed Toothless Bull Ant

I wondered if it was a coincidence that the rock with the ants had so many other species to look at or whether something about the nest meant that the other invertebrates could hang around.

One tiny ant co-inhabitant was a tiny pale centipede-like creature – a symphylan or pseudocentipede. This is one of the many animals who live on decaying matter in the soil.

Symphylan - Pseudocentipede

Symphylan

Other invertebrates the I found were a brown slater and a tiny golden silverfish-like animal. If anyone could help with identifying it I’d be very grateful.

Brown slater

Slater

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And this is….?

There is plenty of life still in the trees and shrubs, especially the wattles. Any clarifications about identification are appreciated.

Rhytidoponera Ant

Rhytidoponera ant in Silver Wattle

Ant (Papyrius sp?)

Ant (Papyrius sp?) in Drooping Sheoak

Wasp on Golden Wattle_17-05-26_4 crop

Wasp on Golden Wattle flower bud

Eucalyptus Weevil

Eucalyptus Weevil

Treading a fine line in the time of tiny spiders

by Patrick Kavanagh

A nocturnal venture into the bush at our place at Strangways at the moment means encountering a myriad of tiny spiders. Some, like this Crab Spider (about 10mm long including legs) pretend to be a bit of plant matter hanging in the web as soon as my light hits them.

Crab Spider

Crab Spider

This slightly larger green spider was too intent on wrapping up its prey to be bothered by the paparazzi.

Crab Spider perhaps?

Many of the spiders in the Golden Wattles at the moment, are however much smaller – a millimetre or even less in length.

Tiny spider and Golden Wattle flower bud

A tiny spider with Golden Wattle flower bud

What did surprise me recently though, was the number of tiny midges that I at first assumed were trapped in the tiny webs of these arachnids. But as soon as I got too close, they would fly off. It seemed that they were using the webs at least for perching. But is there some other purpose? I’d appreciate any information about why they might choose to linger on the trap of a predator. I think they are midges rather than mosquitoes as their back legs are down. And I think the feathery antennae on this one mean it’s a male.

Midge on spiders web

Midge?

By day, there have been quite a few small black wasps on both Golden Wattle and Cassinia arcuata bushes and there have been a few Eucalyptus Weevils about.

Wasp

Wasp on Golden Wattle

Eucalyptus Weevil

Eucalyptus Weevil

Another mystery for us was a strange looking multi-legged animal in the tub in our laundry. We fished it out with a Grey Box leaf and having no idea what would be an appropriate habitat, took some pics of it on the leaf before letting it go in the garden. Typing “bug with 15 pairs of legs” into Google quickly identified it as a House Centipede. It seems it would have been more accurate to photograph it in the house – their preferred habitat in which they hunt other invertebrates. There are native species, but I think this is the introduced one, Scutigera coleoptrata.  We don’t know if it was living at our place or came back with our washing from a recent camping trip in NSW. A striking photographic subject even if it shouldn’t be here.

House centipede_17-05-06_14 crop 2

House Centipede

House centipede_17-05-06_5 crop

House Centipede

Nature’s infinite variety

We were fortunate to enjoy a burst of autumn sunshine this morning. This was soon followed by a wintry blast to remind us that some bleak days are just around the corner. I headed out to the Spring Hill area in search of orchids and managed to find a few, including some dainty Tiny Greenhoods (pictured below), a few Parsons Bands and a single badly munched Autumn Greenhood.

Birds were few and far between but there is still the odd dragonfly and damselfly about to remind us of summer.

Tiny Greenhood Pterostylis parviflora, Spring Hill area, 6th May 2017

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Willie Wagtail along Mia Mia Track

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Wandering Ringtail Austrolestes leda

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Look and learn

It’s the little things in nature that often intrigue me the most.

At present the Drooping Sheoak in the churchyard next door is looking magnificent – the golden branchlets glowing in the late autumn sunshine. While looking closely at the tree I noticed lots of European Wasps, feeding along the branchlets, presumably gathering an exudate of some sort from the junctions between segments – this is actually where the tiny true leaves can be found.

Drooping Sheoak ‘foliage’

European Wasp feeding on sheoak foliage

A small flock of Weebills arrived and began hunting for prey … a wasp would be out of the question, but the birds happily gleaned tiny insects from the foliage, regularly darting out to flutter outside the canopy in typical Weebill fashion. I was surprised then to see one of the birds drop to the earth and snatch a fly. I can’t recall ever seeing a Weebill feeding anywhere other than amongst foliage and the couple of references I quickly looked at made no mention of this behaviour. I’d be interested to hear from readers about your observations.

Weebill with fly, Wyndham Street Newstead, 3rd May 2017

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