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Worker ID Request, Philadelphia, PA (5/9/17)


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#1 Offline VoidElecent - Posted May 9 2017 - 5:40 PM

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1. Location of collection: Ambler, Pennsylvania (Suburb of Philly)
2. Date of collection: May 9th, 2017
3. Habitat of collection: Front yard, under a chunk of dead ash wood I had placed there, in the hopes that a nearby C. cerasi colony would move in. The dirt they were living in was cold and wet; it was 61° F outside.
4. Length (from head to gaster): Almost exactly 3 mm.
5. Color, hue, pattern and texture: Reddish brown, lighter feet & very round gaster. Seems to be covered in tiny hairs.
6. Distinguishing characteristics: Post-petiole present.
7. Distinguishing behavior: Curls up into a ball as a defense mechanism if disturbed.
8. Nest description: *See habitat, dirt under dead chunk of wood. This specimen, and a couple other workers seemed to have built a nest (or satelite nest) directly adjacent to Ponera pennsylvanica, Selonopsis molesta and Lasius flavus-group species inhabiting the space under the log.

 

Note: I'm hoping this is Myrmecina americana (hence my recent reply Michigan Ant's ID thread), but it could just be an unsuspecting Tetramorium worker that I really freaked out.

 

Here are some pictures. I tried to get a shot of her under 4x magnification, but it was nearly impossible to do so without killing her.

 

P1070716%20copy_zpse4lltitp.jpgP1070719_zpsaemcozgb.jpgP1070723_zpsqzilidkm.jpgP1070721_zps76tadysd.jpgP1070717_zpsqkgpeedn.jpgP1070731_zpsx5oke4ac.jpgP1070734_zpscq5zzqor.jpgP1070737_zps5b5sxgnh.jpgP1070739_zpsa4top0yg.jpgP1070735_zpsg1mivvan.jpgP1070743_zpsgvq5tox2.jpgP1070746_zpsaqt48bya.jpgP1070747_zpswke1s2uw.jpgP1070748_zpsqdvj6awt.jpgP1070761_zps5xdnihaa.jpgP1070763_zpsn8lol58e.jpgP1070767_zps0aqjdgkn.jpg


Edited by VoidElecent, May 9 2017 - 5:46 PM.


#2 Offline Martialis - Posted May 9 2017 - 5:55 PM

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Pretty sure this is just some Tetramorium you kidnapped.


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#3 Offline Aaron567 - Posted May 9 2017 - 6:16 PM

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Myrmecina americana?



#4 Offline Martialis - Posted May 9 2017 - 7:24 PM

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In revision, I agree with you and Aaron.

 

Uhh, if this truly is 3mm, I'm not convinced it's a worker.


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#5 Offline Nathant2131 - Posted May 10 2017 - 2:56 AM

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It is definitely Myrmecina americana. There are two pairs of propodeal spines.

Edited by Nathant2131, May 10 2017 - 3:04 AM.

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