Acanthognathus teleductus

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Hypoponera sp.

I found this worker in my sample bag several days ago, but when I tired to ID it things didn’t make sense. The key I was using relied heavily on measurement data and where it lead me didn’t make sense.

IMG_1351Then I saw the top of its head where three ocelli were. I still haven’t identified it fully yet but I thought I would share this morphological quirk.IMG_1352

Progress…

IMG_1346~8%

Some cool ones so far:
Acanthognathus teledectus
Prionopelta amabilis
Carebara unichi
Hylomyrma dentiloba
Lachnomyrmex scrobiculatus

Hylomyrma and I have a shitty camera

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Hylomyrma dentiloba. Such a chunky mesosoma.

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The mandibles really remind me of the genus Gnamptogenys. Would it be possible to look at census data and do some kind of stat test to look at frequency of co-occurrence between the two genera, to test if they have similar predation? My camera really does not capture the beauty of the rugae.

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An odd feature on the gaster where the rugae almost abruptly ends.

Lachnomyrmex scrobiculatus

IMG_1325 GUnRs9TqwQKIA_400-ZD67_1dp0Z_Bw2Sts5mGPYpY0

Labidus coecus

Apparently¬†Labidus coecus can come in two different color morphs; a reddish brown type that I only collected once and a black form which was very common. Or, perhaps the lighter worker has simply recently eclosed? I’m sure they are the same species as they both have the same defining feature that the key uses. The lighter morph worker was collected within a raid trail that had other workers of the color but, army ant brood is raised in cycles, so I’m left clueless.

 rfgIMG_1309 2 IMG_1312

Leptogenys

315316Leptogenys punctaticeps

I would see this species, or what I presumed to be this species approximately every week in my study site at La Selva.¬† I once observed a small colony of 8-10 workers moving in compact single file in the litter and over a log until disappearing into the litter. They were carrying 4 brood items, all of different developmental stages. No morphologically distinct members could be seem. If disturbed, foraging workers are very hard to catch as they run haphazardly and can “disappear” into the litter. Leptogenys in the neotropics is presumed to be an isopod specialist. Most species are nomadic and have a small colony size. For more information see Jack Longinos website here: http://academic.evergreen.edu/projects/ants/genera/leptogenys/home.html

317318Leptogenys josephi

This single worker was encountered crossing a dirt path.

  • Questions? e-mail me at dylan.levar@gmail.com
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