Dspdrew's Lasius cf. flavus Journal  (Discontinued)
Offline - Posted February 18 2015 - 12:00 AM
On 9-5-2014 in Twin Peaks, California, while looking for brood to give to a parasitic Lasius queen I recently caught, I found a colony of these ants living under a rock. I took home a whole bunch of brood, alates and workers.
ID Thread: https://www.formicul....php/topic/522-
1. Location of collection: Twin Peaks, California.
2. Date of collection: 9-10-2014.
3. Habitat of collection: Pine/Oak Forest.
4. Length (from head to gaster): 8 mm (female), 3 mm (male), 3 mm (worker).
5. Color, hue, pattern and texture: Brown, with yellowish-orange gaster, legs, and underside (female); all dark brown (male); all yellowish-orange (worker).
6. Distinguishing characteristics:
7. Anything else distinctive:
8. Nest description: Under a flat rock.
It had rained a day or two before this, so that evening when I brought them into my hot apartment, they started swarming and trying to have a mating flight. I had to put a lid on their container because they kept trying to fly out. The next morning I found a bunch of the female alates had removed their wings, so I gathered them all up and put them in test tubes to see if they could actually be fertile. I didn't feel like setting up test tubes for all of them considering how unlikely it was that any of them were fertile, so one of the test tubes ended up with five queens together. A few days went by and some of them started to lay eggs.
Offline - Posted February 18 2015 - 12:03 AM
Offline - Posted February 18 2015 - 12:10 AM
I took these out of hibernation. Unfortunately, since this journal is being created much later, I don't remember which of these two remaining test tubes was hibernated and which one wasn't. One tube has a dealate, a couple of her sister workers, and a pile of eggs. The other test tube has five dealates and a larger pile of eggs.
Offline - Posted February 18 2015 - 12:21 AM
About a week ago, Gregory2455 suddenly noticed one of his has larvae developing. At the same time, I noticed that the one of mine with five queens has a bunch of eggs that looked slightly curved, as if they were developing into larvae.
Now yesterday, I found quite a few larvae in mine! If these larvae turn out to be workers, then that means I successfully mated these queens in captivity.
As for the other test tube with just the one dealate and a couple workers, they don't seem to have any eggs developing.
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Offline - Posted February 21 2015 - 10:03 AM
Well this is wonderful. I checked on these today, and found all but one queen dead. I have no idea why they died, as I didn't see anything obvious under the microscope. A couple of them were starting to grow mold, so I moved the remaining queen and all the brood into a new test tube. I'll be very lucky if the remaining queen is one of the fertile ones that have been laying eggs.
Offline - Posted March 3 2015 - 9:57 AM
Offline - Posted March 3 2015 - 11:55 AM
That is what happened to my Lasius neoniger!
Offline - Posted March 25 2015 - 11:34 PM
The last queen died, and one of the workers eclosed shortly after. This proves that these successfully mated in captivity in my apartment. I took the callow worker and brood and put them in with my brand new Lasius niger colony to see if they'll be accepted.
Offline - Posted March 26 2015 - 12:42 PM
Can you use the callow worker for a positive ID to flavus?
Offline - Posted March 26 2015 - 3:41 PM
Oh yeah huh...
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