Mysteries of the Insect World

by Belle Waring on April 20, 2005

This may just be the single most random post ever on Crooked Timber, but I, er, soldier on. Perhaps an entomologist or two reads this blog? Leftist entomologists who are sticking it to the man with their ground-breaking research in Roraima? So, I live in Singapore, where we’ve got lotsa ants. Big soldier ants. Little stinging ants. Medium-sized stinging ants. Demi-hemi stinging ants. And so on. When I walk my daughter to school we often see them running in little glistening jointed rivers, 15 ants wide, streaming from the corpse of a snail to the detritus at the edge of the sidewalk. And when the new queen ants are making their maiden flights we are tediously overrun by drones, even on the nineteenth story. They throng to the lights if you forget to close the windows. They also tend to induce menlancholy “to dust thou shalt return” feelings, being, as they are, so poorly put together. Their wings fall off at the feeblest provocation, leaving them to crawl around on the floor in circles. It’s as if a heartless Nature has put them together with the least possible care, thinking, “well, if they haven’t made it to the queen by that time…”. I have to kill dozens of them, usually smushing them with a wadded-up paper towel which I then throw away. This seems a peculiarly modern response; “I’m done with this insect—let’s throw it away in the trash!” But what I am I supposed to do, herd them back to the balcony in some Jain fashion? If they’re in my apartment, they ain’t impregnating the queen. Anyway, if I were to brush against them even slightly, their stupid wings would fall off. This wasn’t my point, though. Yesterday, I went out for a swim with my daughter around 4 o’clock. There is a waist-high stucco wall all around the pool. When I went to put our things on a chair, I noticed a strange sight. The top edge of the wall was thronged with ants, all of whom had their abdomen flexed up at a 90 degree angle to their thoraxes. They weren’t interacting with each other much, and were mostly all facing the same direction. When I leant over to look they rippled back in waves, then slowly edged back to their original positions, abdomens high as flags. WTF was up with that, then? I was struck with the vague thought that they were cooling off, but that didn’t really make any sense. When I got out of the pool 20 minutes later, they were still there, rippling back and forth, peculiarly bent. Thoughts?

{ 20 comments }

1

Barry 04.20.05 at 8:37 am

Belle, it means that they’ve adopted you as their queen. The good news is that your cooking days are over – they deliver. The bad news is on the reproductive front…. :)

2

DJW 04.20.05 at 8:41 am

My wife, my then-four-year-old son, and I lived for a summer in Yogyakarta, Java. We had serious ant problems in our house, with my son’s face the prime target of bites. We tried every gadget we could get and a small arsenal of chemicalia imported from Europe. Nothing worked. Finally someone recommended using “Tawon Minyak”, a chinese traditional medicine in a bottle with red paper wrapping and a picture of a honeybee. The main ingredient was citronella oil. Smelled great and scared the critters right away.

3

JRoth 04.20.05 at 9:59 am

Were they facing towards Rome, perchance?

4

doug 04.20.05 at 10:06 am

were they virgin queens? sounds like it, trying to get males to show up.

5

Matt Weiner 04.20.05 at 10:43 am

Some nice person has put up exactly the quote from Joy in the Morning that I seek!

Edwin was saying that they were members of the Hymenoptera family and self replying, “Well, well. Quite the nibs, eh?”
“They are characterized by unusual distinctions of three regions of the body-head, thorax, and abdomen-and by the stack or petiole of the abdomen moves very freely on the trunk of the thorax.”
“You wouldn’t fool me?
“The female, after laying her eggs, feeds the larvae with food regurgitated from her stomach.”
“Try to keep it clean, my lad.”
“Both males and females are winged.”
“And why not?”
“But the female pulls off its wings and runs about without them.”
“I question that. I doubt if even an ant would be such an ass.”
“It’s quite true. It says so in the book. Have you ever seen ants fight?”
“Not that I remember.”
“They rise on their hind legs and curve the abdomen.”

And, to my consternation and chagrin, whether because it was his intention to illustrate or because he found his squatting position cramping to the limbs, this was just what he did himself. He rose on his hind legs, and stood facing me, curving the abdomen-at the exact moment when I perceived Florence emerging from the house and walking briskly in our direction.

(Click the link to see why Bertie was chagrined and consternated.)

6

goesh 04.20.05 at 11:08 am

For a second there I thought you were talking about the Democrats after Bush was elected

7

Belle Waring 04.20.05 at 11:21 am

when Zoe was little we had more of an ant problem, not having come around to the whole “get everything drenched in poison” idea. we had to put each leg of her crib in a dish of water to keep the ants from coming up and biting her. and we had to change the water every day so that mosquitoes wouldn’t breed in it. ah, the tropics. but c’mon, entomologists, whassup?

8

Barry 04.20.05 at 12:01 pm

Belle, just put something in the water so that the mosquitoes couldn’t breed. Lots of salt, for example. That’d probably do for the ants, as well. I’d suggest *lots* of salt, because Murphy’s Law will cause any salt-water mosquito in ten miles to head straight for Zoe’s bedroom, knowing that it can breed freely.

9

blueshoe 04.20.05 at 12:23 pm

Librarian here, skimming Holldobler and Wilson’s The Ants (tremendous reference book). A raised abdomen is typically an aggressive display. The ants could be assembling to raid a rival colony. If so they might be spraying pheromones to confuse and subdue the rival. Or they could be assembling to fend off a raid by a rival colony–alien workers may recently have traipsed through the area, laying down some funk, drawing a line in the sand as it were. It seems likely the group you saw has its nest within the wall.

I don’t know that an interpretation of combat readiness squares with the amount of time you witnessed the behavior, and I’m not sure you can rule out an exercise in temperature regulation, given the group’s relatively calm demeanor. Apparently ants sometimes mass for the hell of it.
Were their mandibles opening and closing? If so could lend weight to an offensive or defensive purpose.

10

eudoxis 04.20.05 at 12:48 pm

There are ants, like the Liometopum apiculatum that are known to be highly aggessive defenders of nests and food sources. There may have been something sweet like a spilled drink on top of the wall and whenever someone came near, the ants would adopt an aggressive posture to defend the food.

11

Dr Pretorius 04.20.05 at 1:05 pm

The last time I lived in a place with breeder swarms we just ate the darn things. You pluck off the wings, put them in a skillet over a high heat and wait till they stop running around. They taste kind of like pecans, as I recall. Your mileage may vary, of course, as I suspect that you’re dealing with a different species.

12

Heloise 04.20.05 at 1:31 pm

Most ants can’t get past a barrier of Teflon tape on a vertical surface, and mosquitoes don’t breed in it.

13

Troutsky 04.20.05 at 1:56 pm

Proving once again Darwins common ancestor theory, you can bet they were either fighting, feeding or fucking.

14

todd. 04.20.05 at 3:42 pm

Were you making a funny, or was that actually a hint from Heloise?

15

Gillian 04.20.05 at 5:10 pm

Teflon tape? That’s brilliant. It’s teflon. Yet it sticks! I wonder if that is how they get it to stay on the frying pans.

16

yabonn 04.20.05 at 6:29 pm

I’d bet on a beacon-swarm, trying to reach the mothership.

17

Tom T. 04.20.05 at 6:32 pm

Be mindful. Doesn’t Singapore impose a fine for failing to clean up after one’s ants?

18

Danny Yee 04.20.05 at 7:48 pm

I second the recommendation for Holldobler and Wilson’s The Ants (link is to my review), but in this case I can’t find anything more useful than blueshoe did in it.

19

Mrs Tilton 04.21.05 at 5:32 am

Tritto on Hölldobler and Wilson. Love the thing myself, but some might find that it is to ants what Moby Dick is to whales: it will tell you more about them than you wanted to know (unless perhaps you are an entomologist). If that’s the case, you might prefer their Journey to the Ants, which is addressed more to curious laity than to the priesthood. Alas, I have nothing to add to what blueshoe and Danny Yee say about the belly-waving, other than to suppose the behaviour might facilitate dispersal of chemical alarm and aggression signals (ants make much use of such signals).

A woman once complianed to Ed Wilson that her house had been invaded by ants, and asked him what she should do about it. ‘Get a magnifying glass,’ was his advice (and no, I don’t think he was suggesting she ignite them with concentrated sunlight). I envy you your exotic infestors. We suffered an ant invasion one year, but it was plain boring old Lasius niger. I did hold a few up to the loupe (which is how, with the help of Stresemann’s Exkursionsfauna, I was able to determine the species). Didn’t burn any of them, though.

20

Tyrone Slothrop 04.24.05 at 10:02 am

My stepfather, an entomologist, suggests the following:

The ants waving their abdomens around sound like Crematogaster or some other genus exhibiting a standard defensive posture. Mandibles aren’t the only end of the ant that’s useful for defense. But the insects he describes shedding their wings don’t sound like nats at all, but rather termites which are sometimes called “white ants”. The winge of the termite reproductive are designed with a break-off line so that the insect can fly , if poorly, land, and then neatly walk away from its wings. Because male and female termites can mate repeatedly (unlike ants) the loss of ones wings should not be seen as the end of life, or reproductive failure. Though of course many would-be colony founders are eaten before they get anywhere.

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