Gazumped ?
We recently recorded some lovely images of a house-hunting Common Ringtail Possum (Pseudocheirus peregrinus) inspecting a nest-box near Strath Creek, but apparently reserving judgement on its suitability – see video below.
A few days later, another potential tenant, a Brush-tailed Phascogale (Phascogale tapoatafa) was recorded at the same box, and this time seemed to find it to its liking. It seemed particularly impressed with the view, spending a considerable period staring out from the front entrance (a sequence shortened in the following video because of lack of action!).
This once again shows that there is a demand for housing among our arboreal mammals, and that nest-boxes can provide an acceptable substitute when natural tree hollows are lacking.
We vill takeoff…
Weevil take-off
…is the last thing a Lufthansa airline pilot says to the control tower before heading down the runway. It also makes a great caption for the photograph to the left (click photo to enlarge). It shows a Eucalyptus Weevil (Gonipterus scutellatus), otherwise known as the Eucalyptus snout beetle or the gum-tree weevil, fleeing a wannabe nature photographer.
Eucalyptus Weevils (pictured below), as the name suggests, are beetles that live in gum trees. When young the adults are rust red in 
colour, which fades to dark brown as the insects mature. Some have a pale marking on their backs (below). They can usually be found with all six legs wrapped around a leaf stem or small branch looking as if they are hanging on for dear life. If disturbed the weevil will simply drop to the ground to avoid detection.
Both the adults and the larvae damage eucalypt forests. From August to February the adult weevils feed on mature gum leaves and 
produce the scalloped edges on leaf boundaries that is so often seen. The larvae feeding cause the most damage, resulting in complete defoliation of stems, which often die-back and cause stunted gum tree growth. This insect is considered a serious pest in eucalypt plantations.
Not all the Yellow Box saplings in the grove where these photos were taken have been attacked by weevils. Maybe the weevils are saving them for later. We-vill see.
Look what the cat dragged in
Members of the family of snakes known as blind snakes (Typhlopidae) are not often encountered because of their cryptic nature and burrowing habit. They are generally found under rocks and rotting logs, or in ant or termite nests. But they do venture above ground on warm humid nights, especially after rain – which is what the specimen pictured here was presumably doing when it unfortunately met up with a cat and was killed. It was found on a property on Junction Hill, just east of Flowerdale.
All blind snakes in Australia belong to a single genus, Ramphotyphlops, and are non-venomous and completely harmless, although if handled roughly they can emit a foul-smelling substance from anal glands – believed to be a defense mechanism to deter predators.
There are four species in Victoria, two of which are restricted to the north-west of the state and another, the Woodland Blind Snake, R. proximus, is a species now listed as near-threatened and mostly confined to the box-ironbark regions and northern plains. According to knowledgeable reptile enthusiasts Bertram and Steve, the Junction Hill snake is most likely Gray’s (or Blackish) Blind Snake (R. nigrescens) due to its appearance and location. A positive identification would depend on the number of rows of mid-body scales and the shape of the snout – in the case of Gray’s Blind Snake, 22 scales and a rounded rather than lobed snout .
According to the Victorian Biodiversity Atlas, the last confirmed record of a Gray’s Blind Snake in Flowerdale was in 1949, but Bertram did find one at Homewood near Yea during a Striped Legless Lizard search in 2005.
It can grow up to 75cm long and is found throughout central and north-east Victoria, and right up to south-east Queensland. It feeds mostly on soft-bodied burrowing invertebrates, including ant eggs, larvae and pupae, termites and earth-worms.
Blind snakes are not totally blind, but they do have poor vision due to greatly reduced eyes covered by a transparent scale – not a great disadvantage for a burrowing animal.
New AND surprising
The reward of logging the daily visits of the furred and feathered to our birdbath is occasionally something new puts in an appearance. We classify these as either ‘new but not surprising’, which applies to creatures we know are in the area but they just haven’t bothered to visit, and ‘new AND surprising’ – first-time visitors we just would not expect to see.
In the former category is the Olive-backed Oriole (Oriolus sagittatus) (from the Latin word aureolus meaning golden and sagitta meaning arrow – referring to the arrow-like markings on the breast). It was photographed recently (above) during a long bout of high temperatures. The characteristic ‘orry, orry-ole’ call is common in the surrounding bush. The deep-pink bill and red eyes make it memorable.
Trash-talking with the Rosellas
In the category of ‘new AND surprising’, was the Australian Kestrel (click HERE to view post), which turned up at the bath during the same spell of hot weather. Last week, a visitor in the same category was a Sacred Kingfisher (Todiramphus sanctus), pictured right. The Sacred Kingfisher (previously featured, click HERE to view) is a common woodland bird but in our ten years on Junction Hill we had neither seen nor heard one. A close relative of the Laughing Kookaburra, it feeds on insects, fish, crustaceans, small rodents and reptiles.
On a more sobering note, the photo left shows a ‘new but UNFORTUNATELY not surprising’ visitor – a cat (Felis catus). It was just a matter of time before this night-time wildlife hotspot got some attention it didn’t need. Stay tuned for developments. When I catch the critter I am going to nail his tail to the wall. Is this a cat-ass-trophy? For the cat I guess it is.
Unearthed !
While digging over a shrivelled-up patch of beans in our rather sad-looking vegie garden the other day, this frog-shaped lump, about 60 to 70 mm long, flopped out of a clod of earth. A quick hose down revealed it to be a healthy Pobblebonk or Banjo Frog (Limnodynastes dumerilii) that had fortunately avoided the sharp edge of the spade.
Pobblebonk exposed
The obvious swelling (tibial gland) on its lower hind leg, and the pale raised stripe below its eye, readily distinguish it from the other large burrowing amphibian that may be found in our district, the Common Spadefoot Toad (Neobatrachus sudelli). Another identifying feature of the latter is that its eyes have vertical pupils as opposed to the horizontal pupils of the Pobblebonk (and most other frogs). The tibial gland is thought to emit secretions that deter potential predators, although it obviously doesn’t always work – see a previous post Excuse me. I’ve got a frog in my throat.
This season’s look is …
Green Long-legged Fly (Dolichopodid Fly) – iridescent body and wings
The insect fashionistas have spoken – and the look for this season is iridescent. Iridescence (from the Greek word ‘iris’ meaning rainbow and the Latin word ‘escent’ meaning becoming or resembling) is a term used to describe the rainbow-like play of colours seen in such things as soap bubbles, sea shells and insects (see photo left). In insects the colours are caused by ridges or veins on the surface of the body or wings. If the spacing between these ridges is of similar distance to the wavelength of light, approximately tens of thousandths of a millimetre, iridescence will be observed. The colour depends on the spacing of the ridges and the angle of the light shining on the creature.
Black or blue? – depends on the viewing angle
In the beetles (pictured right), membranes on the outer wing casings are made up of slanted plate-like layers. These layers bend and then reflect light to give the observed colours. Similarly butterfly and moth wings are covered with overlapping layers of scales that are lined with parallel veins. In the example of the Southern Old Lady Moth (Dasypodia selenophora) pictured below, the scales on the eye-spot (shown below right) have the right spacing to cause visible iridescence. In some tropical butterflies the entire wing is iridescent. Strangely enough it is a camouflage mechanism. Because the effect also depends on the angle of the light striking the wings, when the butterfly is flying it seems to appear and disappear as it flaps its wings, thus putting predators off their game.
For any of the local Flowerdale Ute Club members now thinking of painting their vehicles with iridescent paint to make them appear and then disappear (for whatever reason) as they drive by, I’m not sure it works like that.
Roadside raptor
In a recent post (click on An unexpected visitor), Ronlit mentioned the difficulty of getting close enough to raptors to get a good look and to take half-way decent photos. One exception in the more open areas of this district is the Brown Falcon (Falco berigora) which can sometimes be seen on roadsides, perched on a dead tree, fence-post or power pole, which offer the falcon clear views of prey crossing the road and open farmland.
A number of times in past weeks we have screeched to a halt at the sight of a Brown Falcon perched beside one of our local roads. A pity our photographic skills don’t match our enthusiasm !
Brown Falcon, Murchison Spur Rd, Strath Creek
The Brown Falcon is easily recognised by the double dark streaks either side of its paler cheek patch, but its plumage can vary considerably from almost uniform dark brown to various shades of brown above and whitish below. In flight it is often noisy, emitting screeches and high-pitched cackles.
Brown Falcon, Fairview Rd, Kerrisdale
For clear photos of raptors it would be hard to beat Geoff Park’s “Natural Newstead” blog. The grassy plains around Newstead in central Victoria provide ideal habitat for a range of raptors, and we would recommend going to the home page (click HERE) and select Bird observations/Raptors in the ‘Categories’ box – or simply scroll back through past posts to see superb images of local birds of that area.
No roos but heaps of hoppers
It looks like a battle scene from Lord of the Rings, but what you are seeing is a very peaceful trophobiotic relationship (an association where food is provided) between adult Black Gumtree Hoppers (black wings with brown heads), their nymphs (black, red and yellow) and Sugar Ants (Camponotus consobrinus).
Eurymelessa moruyana?
Gumtree Hoppers (Eurymela spp.) like cicadas are of the Order Hemiptera. This means they are characterised by having sucking mouthparts and feed by extracting the sap from young trees. The food trees are primarily eucalypts (in this case a Yellow Box, Eucalyptus melliodora) but also include acacias (wattles) and allocasuarinas (she-oaks). They feed in large groups of adults and nymphs.
Treehoppers exude a sugar-rich liquid known as honeydew. This is what ants feed on. In
Ant tending treehopper
exchange for this nourishment the ants provide the gumtree hoppers with protection from other predators. In separate trees in the same stand of young Yellow Boxes, different species of treehoppers were tended by different species of ants (see photo right). A truly symbiotic relationship. Any excess honeydew remains on the eucalypt leaves and leads to the growth of sooty mould.
If the top photo was a battle scene, being Hemipterans the battle cry would be ‘Suck on this’.
A case of …
It’s somewhat of a mystery how this cocoon came to be attached to our kitchen window. It belongs to a Faggot Case Moth (Clania ignobilis), which normally feeds on the foliage of species of Eucalyptus, Callitris or Pinus. We didn’t know this at the time and carefully relocated it onto a branch of a nearby sheoak tree, where it seemed well camouflaged, then returned to sit on the veranda with a refreshing drink. A short time later we noticed a Grey Butcherbird fly into the sheoak and out again. We thought we had better check on the case moth – no caterpillar, no case, neither on the branch nor on the ground ! It seems the butcherbird had taken the lot. So our well intentioned relocation did the insect no favours at all !
Case moth on sheoak
The Faggot Case Moth can be identified by its case having one stick noticeably longer than the rest in its silk and twig construction – faggot meaning “a bundle of sticks bound together”. The larva only extends its thick-skinned head and thorax out of the case to feed and travel, leaving its soft abdomen in the protective case. After pupation the wingless females remain in the case, whereas the males emerge as moths with translucent grey wings spanning about 3cm.
Faggot Case Moth on window
The assumed case-snatcher was an immature butcherbird identified by its brown and fawn plumage. It will eventually develop the black, white and grey adult plumage of the bird picture below right.
Young Grey Butcherbird
Adult Grey Butcherbird
Where’s Wally 2?
Wally and friend (ring-tailed possum)
I fear for Wally. Our Wally is a frog who has appeared previously on this blog site (click HERE to view). He has been a night-time visitor to our bird bath for the past four years. Wally is not big enough to trigger the remote camera but when a larger animal does, Wally is usually somewhere in the scene. You can locate him by his eye-shine. It’s a case of “Where’s Wally?” (see picture left), as in the kids’ picture books. With the regular herbivores that visit the birdbath—Sugar Gliders, Common Ringtail Possums and Common Brushtail Possums—Wally is particularly safe from harm.
Recently the bird bath has been frequented by a Brush-tailed Phascogale (Phascogale tapoatafa). These creatures are known to eat invertebrates, small birds and mammals—in my books there is no mention of reptiles or frogs. But phascogales are opportunistic feeders and the sequence of still shots below show Wally minding his own business at the back of the bath, the phascogale seeing Wally and moving towards him, then an empty space where Wally once had been. Wally is now nowhere to be seen—and has not been seen since.
Focus On Fauna 