Showing posts with label Insects. Show all posts
Showing posts with label Insects. Show all posts

Saturday, April 20, 2013

Fynbos Flora

There have been two occasions to explore the fynbos around Plettenberg in the last few weeks.  The first was coastal fynbos and the second being at the Groot River Pass in the Tsitsikamma section of the Garden Route National Park.

The fynbos is a world renown biome - the Cape Floristic Region - that comprises a stunning diversity of 9,000 species of flowering plants, two thirds of which are endemic. [more detail] 


The coastal fynbos on the Robberg coastline.... 13 April 2013








On the 14th April further inland at the Groot River Pass, the Tsitsikamma section of the Garden Route National Park...









Revisiting the Groot River Pass area on a wet morning on the 4th of May, and then fortunately a dry morning the following day...
















Friday, April 5, 2013

Dragons and Damsels


The last two days have been very cold, and snow has fallen at Sani Pass in the Drakensberg.  Winter is just around the corner!

As summer comes to a close, I suppose the vibrant and abundant insect life will begin to shut up shop.  So in addition to the butterflies featured last week, I though I’d highlight some of the wonderful dragonflies seen over the summer.  Sadly again, there is only a small selection of photos that I would like to pursue and expand on, with a conspicuous lack of Damselflies. In South Africa there are 160 species of Odonata (which include both the Dragon- and Damelflies), so, a long way to go then.

unknown blue, pelham park

stream hawker, queensburgh durban

fitzsimons jewel, mkambati

broadtail scarlet, pelham park

dropwing species, mkambati



My interest peaked back in August last year when Warwick Tarboton contacted me about his planned trip to Mongolia. I found on Warwick’s website a fantastic accumulation of dragonfly photos.  Please please peruse these!  Warwick is an all-round naturalist, and has a depth of knowledge developed from a lifetime of keen attention and sharp senses that only few people possess.  The new Roberts Birds Nests & Eggs is simply spectacular.

To expand on the theme. The New Zealand Bush Giant Dragonfly Uropetala carovei is the largest NZ endemic with a wingspan of 13 cm.

NZ bush giant, kaingaroa forest, 2006

There were also a couple of pretty dragonflies in Mauritius. Through the long standing MWF grapevine, a bit of an entomologist from Mauritius got in touch to help me identify these species, so thanks Andrew Skinner ! (who collected over 900 beetle specimens while working on the Mauritian kestrel project for several years - thats dedication!)

a female Trithemis annulata (Violet Dropwing), black river gorge, nov 2006

Orthetrum brachiale, black river gorge, nov 2006

The ancient ancestors of the order Odonata were the top predators of the Permian and Carboniferous food chain, their apex predator status enabled them to become the largest flying insects ever known, the extinct genus Meganeura, ancestor relatives of dragonflies named, and I love this - Griffinflies, includes Meganeura permiana which had a wingspan of 71 cm!  This appears to exceed the theoretical threshold of size for insects, but may have been possible by higher atmospheric oxygen concentrations and respiratory pumping of the Griffinflies tracheal system. Looking for a picture to show off the magnificence of Meganeura I found the blog of Leandro Sanches Costa, a biologist and sculptor who makes some pretty amazing reconstructions of extinct animals!

reconstructed Meganeura permiana from Leandro's blog

Friday, March 29, 2013

Psyches Metamorphosis


I’ve been busy with plenty of office work and life events which are difficult to express.  So time for a different perspective. The year 2013 has been nothing if not interesting.  I have had to face some gargantuan questions and challenges.  While facing these challenges head on, I have had many moments both of ecstasy and of troubling wobbles.  So while this kind of business doesn’t provide the most compelling blog posts, I thought a nature-oriented metaphor could

Metamorphosis

A wonderful transition that the sluggish, legged-worm creatures we call caterpillars take on their journey in life to being bright, expressive, often gaudy, creatures of flight.  The ancient Greeks used the word Psyche, meaning soul (now mind)

To put it in context, let’s start with a little bit of homework.  The first 20 years of my life, in New Zealand, was spent in great ignorance of butterflies and moths.  Later, with a couple of years of entomology courses at Massey University, I learned that NZ’s Lepidoptera diversity bears such resemblance to other groups of animals on this long isolated, remote, south pacific land.  The butterfly diversity is particularly embarrassing with only 13 native species, however the remaining 1800 species are of moths, with a very high endemism of about 90%.  Moths though are mostly covert and camouflaged creatures of the night

South Africa in contrast, is a place of mind-blowing diversity for a humble Kiwi.  There are 666 species of butterfly, and further, there are more than this number of brightly-colored day-flying moths alone, with a wild estimate of some total of 10,000 species of moths

So I have given them much appreciation and paid some glancing attention of the butterflies and moths while out at my eagle sites.  Summer has been a wonderful spectacle of emergence

Having delved into my collection of photos from this year gone, I’ve found a few nice photos to share here.  I’ve also added one or two of Glen McLean’s photos, who has helped identify some of these species, and is making a good start to developing a digital collection of the butterflies of South Africa. Maybe in coming years I’ll be seen wandering gardens with my butterfly net and camera

Take a look at the website of the Lepidoptera Society of South Africa, the home page has a magnificent photostream

The ADU’s Virtual Museum is a depository and citizen science project of digital specimens of all types of wildlife. And submitting digital butterfly specimens will contribute to the SABCA, a joint project of Lepsoc, ADU and SANBI to revise the Atlas of SA butterflies distribution and conservation status


stunning and very large caterpillars of the emperor moth

unexpectedly touching hairy caterpillars is an uncomfortable experience

the metamorphosis is so extreme there is no way to tell what this will look like as an adult. photo G McLean

despite widespread and such obvious aposematism, cuckoo's thrive eating caterpillars. photo G McLean

this species is extremely toxic to touch, it looks as dangerous as a nudibranch! photo G McLean

one of the vivid day flying moths of the superb moth family

possible Black Pie

Brown-veined White

False Dotted Boarder (one of the Whites)

the boring underside of the beautiful Green-banded Swallowtail

a male Mocker Swallowtail. females have a variety of mimetic patterns of the monarch group, hence 'mocker'

Orange Tip. photo G McLean

Common Mother-of-Pearl. one of SA's showiest butterflies.

Brown Pansy

White-barred Acraea. a close muellerian mimic of the african monarch. this haggard one is 'mud-puddling'

either a Smokey Blue or Ant Blue species. Ant Blues so named because their larvae live in ants' nests 

summer form of the Garden Commodore, also called Garden Inspector. 

likely a Speckled Red Acraea. with the dark forewing veins either atypical form or another species