How do you tell Lasius americanus (alienus) from brevicornis (flavus)?

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AntsDakota
Posts: 1153
Joined: Sat Mar 17, 2018 4:22 pm
Location: South Dakota

How do you tell Lasius americanus (alienus) from brevicornis (flavus)?

Post: # 47571Post AntsDakota
Wed Aug 15, 2018 2:52 pm

I recently mastered how to distinguish Lasius neoniger and americanus (The new name for the North American Lasius alienus) queens and was wondering how to tell Lasius americanus from brevicornis (The new name for the North American Lasius flavus). My lack of insight on this genus has led me to mis-id my queen several times. It went from Brachymyrmex depilis to Lasius flavus/brevicornis, then to Lasius americanus and now I'm almost sure on Lasius neoniger. I just don't want to make that mistake ever again.
"God made every kind of wild beasts and every kind of livestock and every kind of creeping things;" (including ants) "and God saw that it was good." Genesis 1:25

ClashOwenBash
Posts: 143
Joined: Sun Jul 15, 2018 1:58 am
Location: Oxfordshire, England

Re: How do you tell Lasius americanus (alienus) from brevicornis (flavus)?

Post: # 47612Post ClashOwenBash
Thu Aug 16, 2018 2:15 am

AntsDakota wrote:
Wed Aug 15, 2018 2:52 pm
I recently mastered how to distinguish Lasius neoniger and americanus (The new name for the North American Lasius alienus) queens and was wondering how to tell Lasius americanus from brevicornis (The new name for the North American Lasius flavus). My lack of insight on this genus has led me to mis-id my queen several times. It went from Brachymyrmex depilis to Lasius flavus/brevicornis, then to Lasius americanus and now I'm almost sure on Lasius neoniger. I just don't want to make that mistake ever again.
Lasius Flavus has bright yellow workers and the queen's underbelly is yellowish with the rest of her body being brown. So Lasius Brevicornis should be easy to tell apart from L.neoniger because of the different colouring.
Currently caring for a Lasius Niger colony :D

Founding: :)
Lasius Niger
Lasius Flavus
Myrmica Rubra

AntsDakota
Posts: 1153
Joined: Sat Mar 17, 2018 4:22 pm
Location: South Dakota

Re: How do you tell Lasius americanus (alienus) from brevicornis (flavus)?

Post: # 47641Post AntsDakota
Thu Aug 16, 2018 12:55 pm

ClashOwenBash wrote:
Thu Aug 16, 2018 2:15 am
AntsDakota wrote:
Wed Aug 15, 2018 2:52 pm
I recently mastered how to distinguish Lasius neoniger and americanus (The new name for the North American Lasius alienus) queens and was wondering how to tell Lasius americanus from brevicornis (The new name for the North American Lasius flavus). My lack of insight on this genus has led me to mis-id my queen several times. It went from Brachymyrmex depilis to Lasius flavus/brevicornis, then to Lasius americanus and now I'm almost sure on Lasius neoniger. I just don't want to make that mistake ever again.
Lasius Flavus has bright yellow workers and the queen's underbelly is yellowish with the rest of her body being brown. So Lasius Brevicornis should be easy to tell apart from L.neoniger because of the different colouring.
I know how the workers look, but neoniger and americanus queens also have a yellow underside.
"God made every kind of wild beasts and every kind of livestock and every kind of creeping things;" (including ants) "and God saw that it was good." Genesis 1:25

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