Wednesday, December 18, 2013

Video of Mike King's Sarracenia collection (Shropshire Sarracenias)





Mike King's collection/nursery - Shropshire Sarracenia's - is the stuff of legend among Sarracenia fanatics. I was mucking around on YouTube tonight and came across a virtual tour of his nursery that he had posted. Now THIS is a collection! And just look at the colours! Just magnificent...

Monday, December 2, 2013

Cicadas!

Like North America, Australia has very spectacular cicada outbreaks. This year has seen massive emergences in the Sydney basin, which I was very lucky to see this past weekend.

Thopha saccata

Australia’s cicadas are rather spectacular, and have been given affectionate and often colourful names by children of generations past that have stuck and even entered common useage. These include names like the greengrocer, yellow monday, masked devil and bottle cicada. Others have names reflecting their musical abilities, such as razor grinder (a species that sounds like an angle grinder being used on sheet metal). The one shown above is similarly called the double drummer (Thopha saccata). This is the songless female.

Thopha saccata_M

Male double drummers have very impressive soun dproducing organs (tymbals), making them one of the loudest insects on Earth. Their tymbals are so large that they even have massive covers over them that look like sidesaddles. You can see them just behind the last pair of legs, under the wings. This male has been around for a while and has milky, torn wings.

Psaltoda moerens_F

Here is a less colourful species, the aptly named red eye (Psaltoda moerens), again a female. What most people don’t realise about cicadas is how beautiful they look like as they emerge as adults.

Psaltoda_emerging_1

Here is another female red eye cicada just after she emerged from her nymphal shell. Her colours are spectacular!

Psaltoda_emerging_2

Her wings became iridescent blue, almost like a Morpho butterfly, as they fully expanded.

Psaltoda_emerging_2a

Magnificent!

Psaltoda_emerging_3

Unfortunately, the colours fade rather quickly once their integument starts to dry out. The body soon becomes very dull, and fades to black as the exoskeleton undergoes a complex chemical reaction.

Thopha saccata_stuck

Unfortunately, some cicadas get stuck or attacked by ants as they emerge. Here is a poor male double drummer who suffered this fate. We tried to rescue him, but his wings had already dried out at a wonky angle.

Danima banksiaeDanima banksiae aposematic

We also ran a light sheet and saw a few nice moths. This is a Notodontid, Danima bankiae.

Endoxyla encalypti

And to finish up, a Cossid or Goath moth, Endoxyla encalypti. This species has some blue iridescence on the thorax. The larvae bore into Eucalyptus trees.

The Sarracenia are doing well, but still recovering from the hail the other week. More photos of this season’s progress are due soon.

Good growing ‘till then!

Thursday, November 21, 2013

And then came the hail.

The title says it all.

Here are some photos taken over the weekend. The wind had been back to normal over the last few weeks. New, non-malformed pitchers were up, replacing the manky looking ones. Everything was looking magnificent.

Collection_1_thumb[1]

flava_thumb[1]

tray 1_thumb[1]

tray 2_thumb[1]

And then came the storm. Typical Bureau of Meteorology: the public pages said “chance of thunderstorms”. But the pay-to-see aviation service pages had maps showing high risk of severe storms over a large swath of New South Wales, with Canberra right in the middle.

So, around 6 PM, the skies darkened and it quickly grew quite ominous:

Canberra storm 21112013_webStorm 3

The storm dumped pea to small marble hail on us for 5 minutes. Lots and lots of close lightning strikes too. We got 23 mm (nearly 1”) of rain in about 10 minutes. We were lucky; a few kilometres away there was hail slightly larger than golf balls.

Here is the aftermath in the collection. I would hate to see what golf ball hail would do:

Hail 1 Hail 2

Hail 6Hail 5

Hail 3Hail 7

Well, it least the rain brought out some food:

Hail 4

Hail 8

Till next time.

Seedlings

Back in 2011, I noticed a number of Sarracenia seedlings had germinated in pots throughout the collection. As I had done a big Sarracenia flava pollination the previous season (crossing every clone of each flava form I had with each other and pinching out any other species’ flowers!), it was pretty obvious what species the seedlings would be. In order to see what I would get out of them, I transplanted them into a foam produce box full of peat, along with a bunch of sundews I recovered out of pots when I repotted the collection last year. Here is what the box looks like now:

Seedling tray

There are a few very nice looking plants coming up in here. Here are my favourites:

atropurpurea seedling

To longtime readers of this blog, it is pretty obvious that I love Sarracenia flava var. atropurpurea. During the mega pollination, I crossed all of my (then) clones together: FRT 1-1, FRT 1-5 and a clone originating from Phil Reytter’s collection. This seedling is presumably the progeny of one of these crosses (I suspect FRT 1-1 x Reytter clone – FRT 1-5 has a cut-throat blotch that I suspect would have been passed on).

rubricorpora seedling

Sarracenia flava var. rubricorpora – nice red tube, and the only seedling true to type from these seedlings. In contrast, there are a number of flava var. rugellii, flava var. cuprea and flava var. flava / ornata.

Thursday, November 14, 2013

On Sarracenia, drugs and Lepidoptera…

flava fly

Saracenia flava with soon-to-be dinner.

Way back in 1976, a group of researchers extracted coniine, a narcotic drug, from the nectar of Sarracenia flava. Using the fire ants (Solenopsis invicta) as test subjects, they demonstrated that the amount of coniine in the nectar was sufficient to paralyse the ants. While I can’t access the original study online, I have often wondered what effect the coniine has on prey capture? (NB – the amount of coniine secreted by Sarracenia is not anywhere near enough to affect humans!).

BDQyIJ8CEAEoaAu.jpg large

Over the past couple of seasons, I have made some interesting observations with butterflies and moths coming to my Sarracenia. Last season, I watched a number of adults of the dayflying grapevine moth (Phalaenoides glycinae, Noctuidae sensu stricta: Agaristinae) drink the nectar of Saracenia leucophylla x psittacina pitchers (see photo above).

I was bemused that these moths would be attracted to Sarracenia, but became more intrigued when I found them alive but very intoxicated on the surface of the Sarracenia pots. When I picked them up, they barely but up a struggle, strange for such a strong flying (and often hard to catch) moth. However, they were never trapped by the Sarracenia hybrid they drank from, as the opening is too constricted for the moth to get inside. It was always this hybrid they were feeding at too – I never saw them at any other Sarracenia.

Now, fast forward to this season.

Heteronympha merope_M_R_sml

Over the past few days, we have had Common Brown butterflies (Heteronympha merope merope, Nymphalidae: Satyrinae) make their first appearance in Canberra. The above photo shows a male specimen, which are more conspicuous than females at this time of year.

Here is where I found one today (plant is an S. leucophylla ‘Tarnok’):

merope in pitcher_sml

What is impressive here is the relative sizes of the common brown butterfly…

Heteronympha merope 50c_b

and the pitcher that caught it…

tarnok 50c

As you can see, males of the common brown have a wingspan nearly twice the size of the mouth of this S. leucophylla pitcher. In fact, the specimen I photographed (from Tenterfield, NSW), is a little smaller (and paler) than the ones I often see here in Canberra.

merope in pitcher_2

And yet, this leucophylla managed to snag one. Sure, with its wings folded above its back, the butterfly could fall in, but the feeding behaviour of these butterflies is such that they usually settle head up, on top of the flower they are feeding on, and rhythmically open and close their wings while they feed. Once inside the pitcher, I think the butterfly’s struggling would suck it further down the pitcher, but I really wonder whether it would fall in on its own.

Perhaps the leucophylla had a little help from some coniine?

I will keep watching what goes on with insets around my Sarracenia over the summer and see if I can photograph some interesting encounters.