Entomologists: What the heck are these moths doing?!?

Factual Questions
1

So, movement from my sunken patio catches my eye. I look over to see two moths engaged in some weird behavior.

At first, I thought maybe it was some kind of mating ritual, but what I looked up online didn’t corroborate that theory.

I got some video so you could see the behavior tell me what is going on:

This went on for a good 20 minutes or more. The brown moth would fly away and come back to do this over and over.

The white moth just walks around in circles.

In fact, it’s been about an hour an a half and the white moth is still walking around in circles on my patio floor…

I have more info in the video description.

Is this some territorial display?

Is the white moth dying? (it looks a bit ratty now and almost acts drunk)

What kind of moths are these?

2

Gypsy moths.

Since what you seem to have there is a male and a female, I’d guess that is mating behaviour like you first suspected.

Squish 'em. Squish 'em good and don’t feel bad about it.

3

The white moth is the female. Female gypsy moths are unable to fly. The males fly about looking for them.

I assume it’s courtship behavior, although I haven’t been able to find much on gypsy moth mating.

4

Well, son of a gun. So they ARE gypsy moths! I’ve never seen them before.

It says in the link you provided that the females can’t fly. She disappeared somewhere in the 3 o’clock hour but she didn’t seem able to climb up the 3 foot “wall” of my patio “pit” earlier on (I have an apartment that’s slightly below ground).

I wonder how she got out?

Well, now that I know better, I won’t be too friendly towards them.

I checked out Wikipedia to see more about them and found that it’s natural predator was hanging around my door as well:

Maybe he took off with the female?

Thanks for the info!!

ETA: Maybe I have the first footage of the courtship process? LOL…

5

Speaking of moths, I saw an incredible (to me) looking moth flitting around my butterfly bush. At first I thought it was a hummingbird, but it was too small and not a bird. It allowed me a very close look. When I told my gf about it, I was kind of effusive describing it. She yawned and told me it was a sphinx moth. My ignorance (I had never seen one!) was fought. :wink:

6

Did she also tell you that they are (maybe) the infamous tomato worms in their youth? Too bad, because as moths they are really cool.

7

No freaking way?!?! Very cool.

8

I just looked up the Sphinx Moth. That is WAY cool! (Thought I’m not sure I’d be all that happy to see a moth the size of a hummingbird! :eek:)

9

Hummingbird moth. http://www.plantswap.net/forum/f58/bird-moth-5582/

We’ve gotten these here before, and they are COOL! but I haven’t seen any in a couple of years now.

10

Hm. I wonder why they have wings.

11

For god’s sake kill them NOW! If you let them breed you’re a part of the problem, not the solution.

12

Ostriches have wings, too.

The females may have lost the power of flight too recently for there to have been much selection for reducing or losing the wings; or perhaps there isn’t strong selection for reducing them. Perhaps they serve as species recognition or mating signal for the male moth.

13

:rolleyes:

14

It would be reasonable to ask why. I would guess that ornithologists could give us a very good answer.

I don’t buy the “no strong selection” argument because 1. I would expect selection, based on wasted resources alone, to be sufficiently strong (greater than the reciprocal of population size) and 2. in any case, if there were no selection to keep wings they would be lost, even if there were no selection for loss.

Sure, the other things are possible, but so are numerous guesses we could all make.

15

Right back atcha.

16

You guess wrong. No we can’t, at least any better than the ones I mentioned for the moth.

Propose another hypothesis.

Make some guesses of your own, then, and we can see how well they fly.:slight_smile:

17

I didn’t know what they were when I got the video, or I would have!

I’ve been seeing the male around, but just as I get ready to open the slider to smash him, he flies away. The female flat out disappeared after 3pm that day.

If she can’t fly, I have no idea how she got out of my patio pit. When she tried to walk the walls, she’d fall off.

I’ve alerted my landlords and they plan to do something as we have lots of pretty trees they’d like to keep on the property.

I have been seeing the predator wasp that eats the gypsy moth, so I’m hoping they’re having a good feed!