Not really a Green Ant

Pod-sucking bug
Looks very like an ant but isn’t

There isn’t much insect activity in the garden at this (dry, cool) time of year but when I was ambling around it last week I saw a Green Ant which was too small – only about two thirds of the size of a normal Green Ant.

That was my first thought, anyway, Continue reading “Not really a Green Ant”

Let’s not wait for the rain

brown bugs
Shield bugs mating on the trunk of a guava tree

Townsville is still waiting for the rain – all we’ve had is a 12mm teaser nearly a week ago – but the garden is coming to life anyway. I spotted this mating pair of shield bugs (aka stink bugs, Poecilometis sp., Hemiptera, Pentatomidae) a few days ago, and they are not alone. Hawk moth caterpillars are stripping our pentas plants and madonna lilies (I wonder why they like those two in particular?) and we often see courting pairs of Cairns Birdwing butterflies. Other butterfly numbers are building up, too, especially the Pale Triangle and the Clearwing Swallowtail.

Abundant invertebrates

black butterfly attacking a black and white one on a pink-flowering creeper
A Common Crow, Euploea core, attacking a Marsh Tiger, Danaus affinis, feeding on Maiden’s Blush creeper

A week ago I mentioned my surprise and disappointment at how few bugs I found in a Hobart garden in the week after Easter. One of the expert Tasmanian bug-hunters I mentioned in that post was amused by my reaction:

I had a good laugh at your disappointment … Unfortunately you did come down at the beginning of the ‘slow’ period (especially bad April to August). We do have winter insects but for the most part it’s more a specialist pursuit of the very small critters :-)

In retrospect, I think there were two reasons that the low numbers surprised me. One is that my memories of childhood in South Gippsland (the nearest thing to a Tasmanian climate I have experienced) have probably been skewed by the fact we didn’t spend much time outdoors in winter, as well as blurred by the decades in between. The other is that I hadn’t really thought about the difference between Tasmania’s seasonal variation and Townsville’s. We have comparatively little variation in day length or temperatures and our far greater variation in rainfall seems not to matter quite so much. (N.B. the temperature scales on these two charts are the same but the rainfall scales are not.)

Hobart monthly temp and rainfall Townsville monthly temp and rainfall chart

A stop on the way home from Reef HQ Aquarium on Thursday drove home the difference quite emphatically, although quite by accident. I pulled up beside a mangrove creek which runs through a narrow strip of parkland between South Townsville and Hermit Park (something I have done several times before – see this post and links from it) and in the space of half an hour or so I was able to photograph, not just observe, more species of butterflies and more species of true bugs (Hemiptera) and more species of spiders than I had seen in my entire week in that South Hobart garden. I also saw, but didn’t photograph, another species of butterfly, some small grass moths, two species of native bee and various flies.

The links on this list mostly lead you to older photos, here on Green Path or on my Flickr photostream, but a couple taken on the day deserve more attention. One, showing the kind of behaviour that makes the observer rethink butterflies’ sweetness-and-light reputation, is featured at the top of this page.

orange-black bugs on twig
Assassin bug nymphs

Assassin bugs (Reduviidae) are common enough but this was the first time I had seen new hatchlings (here is a bigger one in the same parkland). They were dispersing down the mangrove twig away from the cluster of eggs they had just emerged from.