ants
awild | April 5, 2010Today's breaking news in Ant Science is this:
Newly discovered pieces of amber have given scientists a peek into the Africa of 95 million years ago, when flowering plants blossomed across Earth and the animal world scrambled to adapt.
Suspended in the stream of time were ancestors of modern spiders, wasps and ferns, but the prize is a wingless ant that challenges current notions about the origins of that globe-spanning insect family...Inside the Ethiopian amber is an ant that looks nothing like ants found in Cretaceous amber from France and Burma.
Wow- that's big news! I wonder what this…
awild | April 5, 2010[a guest post by myrmecologist Andrea Lucky]
Andrea & her intrepid field team in New Guinea
It was a dark and stormy night...
...actually, it was a dark and stormy morning. The dawn of the 7th day of ceaseless frigid rain to be precise, and I was reminiscing about the grand old days one week before when the sun emerged and for a glorious 10 minutes it was warm enough to splash some water on my arms, legs and neck and wipe away the accumulated grime that is synonymous with field work. I wondered if that lovely burst of sunshine would ever come again (no, it wouldn't), and every time I…
awild | April 4, 2010
Prenolepis imparis - winter ant (queen)
Urbana, Illinois
Photo details: Canon mp-e 65mm 1-5x macro lens on a Canon EOS 50D
ISO 100, f13, 1/250 sec, diffused flash
awild | April 1, 2010
Myrmicocrypta camargoi Sosa-Calvo & Schultz 2010
Brazil
The world's ant fauna continues to yield new treasures. Myrmicocrypta camargoi, described in a new paper by Jeffrey Sosa-Calvo & Ted Schultz, is the largest species in this fungus-growing genus.
source: Sosa-Calvo, J., Schultz, T.R. 2010. Three Remarkable New Fungus-Growing Ant Species of the Genus Myrmicocrypta (Hymenoptera: Formicidae), with a Reassessment of the Characters That Define the Genus and Its Position within the Attini. Annals of the Entomological Society of America 103(2):181-195.
doi: 10.1603/AN09108
artwork by…
awild | March 31, 2010
Leptomyrmex darlingtoni, Australia
A big day for ant evolution! The Ant Tree of Life research group (AToL) has published their dolichoderine phylogeny in the journal Systematic Biology.
Dolichoderines are one of the big ant subfamilies, comprising just under ten percent of the world's ant species. These are dominant, conspicuous ants noted for having ditched the heavy ancestral ant sting and armor in favor of speed, agility, and refined chemical weaponry. Most dolichoderines live in large colonies with extensive trail networks, and they fuel their frenetic lifestyle through copious…
awild | March 30, 2010
Who were those magical mystery insects?
The ant is Prenolepis imparis, recognizable by the attractive hourglass constriction in her mid-thorax. Congrats to Julie for the answer. The ant's hapless prey was, as Ted McRae proferred, a hackberry psyllid Pachypsylla celtidismamma (Hemiptera: Psyllidae).
The hard part was figuring out what the heck sort of group the oddball prey insect belonged to. Psyllids are related to aphids but haven't suffered such extreme modification over the course of their evolutionary descent. They retain all sorts of general buggy traits, rendering them difficult to…
awild | March 30, 2010Have Australians lost their fight against imported fire ants?
Despite $215Â million being poured into eradication programs nationally, fire ants have claimed territory in an arc from Logan City, between Brisbane and the Gold Coast, to near Grandchester, about 80km west of where the first outbreak was found at the Port of Brisbane in 2001.
Authorities now concede a new and even more expensive long-term campaign might be needed to stop them threatening our lifestyles.
I am curious as to how fire ants threaten the Aussie lifestyle, though. Do they eat Vegemite?
awild | March 29, 2010
While photographing a Lasius alienus colony in the park yesterday I noticed a red, round mite hanging off the leg of this worker ant. I'm glad we humans don't have parasites like these.
Perhaps if we're really nice, Macromite will tell us something about the little guy.
Photo details: Canon MP-E 65mm 1-5x macro lens on a Canon EOS 50D
ISO 100, f13, 1/250 sec, diffused flash heads positioned for backlighting and fill
awild | March 27, 2010No, not really. I'm just kidding. Wouldn't it be great to have an ant field guide, though?
Off and on for the past couple years I've been playing with concepts. A potential format is this (click to download pdf):
The salient features, in my opinion:
Targeted at the general naturalist, so less technical than the excellent Fisher & Cover guide
Organized around genera, as species IDs remain problematic without microscopes
With synopses of the most commonly encountered species
Containing brief chapters on ant ecology, collection, culture, etc
But that's what I'd like in an ant book.…
ddobbs | March 19, 2010
Cordyceps in glass, by glass artist Wesley Fleming -- a strange depiction of a rather horrid business. For more, do go to the source, the lovely Myrmecos Blog, which is all about bugs.
Now, the best of the week's gleanings. I'm going to categorize them from here out, and at least try to keep them from being from completely all over everywhere about everything.
Mind, brain, and body (including those gene things)
While reading Wolpert's review of Greenberg's book about depression (he didn't much like it), I found that the Guardian has a particularly rich trove of writings and resources on…
edyong | March 18, 2010
One night of passion and you're filled with a lifetime full of sperm with no need to ever mate again. As sex lives go, it doesn't sound very appealing, but it's what many ants, bees, wasps and termites experience. The queens of these social insects mate in a single "nuptial flight" that lasts for a few hours or days. They store the sperm from their suitors and use it to slowly fertilise their eggs over the rest of their lives. Males have this one and only shot at joining the Mile High Club and they compete fiercely for their chance to inseminate the queen. But even for the victors, the war…
awild | March 17, 2010Not a fire ant.
But I'll give ten Myrmecos (â¢) points to the first person who can identify what species it really is.
awild | March 16, 2010Podomyrma sp.
Cape York Peninsula, Queensland, Australia
Photo details: Canon MP-E 65mm 1-5x macro lens on a Canon EOS D60
ISO 100, f13, 1/200 sec, flash diffused through tracing paper
ddobbs | March 16, 2010
The Science of Reading is the Harvard library's nice new site about reading. Lots of great old texts and some history of reading science.
BBC News - Man assaulted female police officer with penis. The court heard he had been drinking heavily and could not remember committing the offence at his home in Aberdeen
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Indiana Jones & the Ants - The New York Review of Books
In her review of Harvard entomologist E.O. Wilson's first novel, Anthill, in the April 8 issue of The New York Review, Margaret Atwood encourages anyone interested in ants to "take a look at the daring eco-…
awild | March 16, 2010You may remember Wesley Fleming, the glass artist I blogged about last year. It seems he's accomplished a remarkable new piece: a leafcutter ant infected with a parasitic Cordyceps fungus. As far as I know this is the first Cordyceps ever created from glass.
If you'd like to see it in person, this and some of Fleming's other pieces will be on display at the Racine Art Museum this summer.
What is Cordyceps, you ask? Watch:
awild | March 14, 2010
To create this video, I fed honey water to a captive colony of Camponotus pennsylvanicus carpenter ants and recorded them passing the liquid among nestmates. The sharing behavior is called trophallaxis, and it means more to ants than mere nutrition. They use the behavior to spread chemical messages around the nest and to create a unified colony odor.
As a case in point, near the end of the video workers are visible licking the queen. Her scents are picked up this way and passed around the colony via trophallaxis. It's how the ants know the queen is present and reproducing.
For the record, I…
awild | March 13, 2010
Theodore Pergande (1840-1916)
Over 12,000 ant species have been described since the inception of modern taxonomy 252 years ago. From Formica rufa Linneaus 1758 to Paraparatrechina gnoma LaPolla & Cheng 2010, where did all those names come from?
Now it's easier than ever to find out. The Global Ant Project is assembling a biography for each of the 917 people responsible for our current taxonomy. These are the researchers who have defined the species, assembled them into genera and subfamilies, supplied the latin names, and refined the work of their predecessors.
Efforts like these help…
illconsidered | March 12, 2010Not really apropos to climate change, but I saw this and just had to share.
Ever wondered what it would look like if you could actually see the entire network of tunnels that make up a large ant colony? Well, all it takes is 10 tons of concrete and a few months of labour.
Oh yeah, it also takes a willingness to destroy what you want to study. I have always had mixed feelings about that.
awild | March 10, 2010Also, my first ever video blog:
Watch the HD version if you can. The ants are actually visible, if you squint.