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Tetramorium ID - Jasper IN

tetramorium id

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#1 Offline CatsnAnts - Posted August 10 2021 - 5:53 AM

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Date: 8/9/21 and 8/10/21

Size: 4.5 mm

Time of nuptial flight: Sunrise

Weather: Just rained the night of/day before

Distinguishing behaviors: These queens will immediately play dead if you shine light on them.

 

 

I found 11 of these queens yesterday morning and this morning combined, and at first glance it seemed obvious that they were Tetramorium bicarinatum. However, there are several key differences:

 

 ~~~

 

1. The propodeal spine on these queens is much shorter than T. bicarinatum, and there is only one pair of them located at the center back, unlike T. bicarinatum who have a sort of "double" pair of spines.

 

~~~

 

2. The petiole node on the unknown queens is much smaller and more triangular than all other polygynous Tetramorium in the U.S. (check for yourself if you want, just in case I missed one).

 

~~~

 

3. These queens are distinguished from a lot of other Tetramorium because of their larger (relatively) size.

 

 

 

Here are some photos:

 

061 (2)
062 (1)
063
064
067
068
069
070 (2)

 

 

 

Maybe I'm totally incorrect on the genus, and am looking at these queens the wrong way. Input is appreciated.


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#2 Offline AntBoi3030 - Posted August 10 2021 - 6:02 AM

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Could it be some mini myrmica? I’m pretty sure that’s wrong though because myrmica would be larger then that.
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My favorite queens/colony’s:
Pheidole Tysoni, Selonopis Molesta, Brachymyrmex Depilis, Tetramorium Immagrians, Prenolepis Imparis, Pheidole Bicirinata 


#3 Offline PetsNotPests - Posted August 10 2021 - 6:08 AM

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I'm not sure, but she dosen't strike me as a Tetramorium sp. Like what AntBoi said, she could be some kind of Myrmica.

 

Awesome pics btw. 


Edited by PetsNotPests, August 10 2021 - 6:10 AM.

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Ants are Pets, not Pests. 

 

-Camponotus sansabeanus

-Camponotus US-CA02

-Camponotus vicinus

-Formica podzolica

-Monomorium spp.

-Pogonomyrmex californicus

-Solenopsis spp. 

 


#4 Offline NickAnter - Posted August 10 2021 - 6:09 AM

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Stenamma sp. Nice find!
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Species being kept:

 

Solenopsis truncorum, Solenopsis "plebeius", Solenopsis validiuscula, Solenopsis sp., Solenopsis xyloni, Solenopsis amblychila, Camponotus vicinus, Camponotus maritimus, Formica cf. subaenescens, Formica cf. aerata, Lasius cf. americanus, Lasius aphidicola, Lasius brevicornis, Lasius nr claviger, Pheidole navigans, Nylanderia vividula, Aphaenogaster occidentalis, Temnothorax rudis, Temnothorax cf. nitens, Pogonomyrmex californicus, and Strumigenys membranifera

 

People are stupid. It explains a lot...


#5 Offline CatsnAnts - Posted August 10 2021 - 6:12 AM

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Stenamma sp. Nice find!

Well that was rather unexpected :)

 

What a nice surpirse!


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#6 Offline Mettcollsuss - Posted August 10 2021 - 7:37 AM

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Yep, Stenamma. According to AntWeb, the Stenamma species that have been recorded in Indiana are S. brevicorne and S. schmittii.


Edited by Mettcollsuss, August 10 2021 - 7:37 AM.

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#7 Offline TennesseeAnts - Posted August 10 2021 - 7:49 AM

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I would say Stenamma schmitti is most likely.


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#8 Offline CatsnAnts - Posted August 10 2021 - 2:25 PM

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I would say Stenamma schmitti is most likely.


Stenamma schmitti is a possibility (although the size range for those queens is much smaller), all 10 of these queens that I caught are 4.5 mm+, some reaching closer to 5mm. My best guess would be Stenamma meridionale simply because of the size of the queens being so large. But then again, S. schmitti is highly variable, and I assume size would be variable as well.

Also antweb is way lacking in terms of species in Indiana, this list is a much better representation:
https://www.formicul...indiana-antweb/


When workers arrive, the eye size will be a dead giveaway to which species it is, since S. meridionale workers have abnormally large eyes for this genus.
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Also tagged with one or more of these keywords: tetramorium, id

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