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Photo#1199056
1215a - Ptenothrix

1215a - Ptenothrix
Finn Hill Park Kirkland, King County, Washington, USA
March 12, 2016
Size: ~5mm
Found at edge of pond.

Images of this individual: tag all
1215a - Ptenothrix 1215a - Ptenothrix

Moved

Dicyrtomidae
Could be Dicyrtoma else Ptenothrix.
Do you have a frontal shot in which we can see the midfacial setae?
And a lateral shot in which we can see the shape of the small abdomen?

 
Hi, Thanks for narrowing i
Hi,

Thanks for narrowing it down. All shots were taken from above, but I added one where you can see more hairs on the face because the critter is looking upwards. I could try to go back and get some more pics from different angles. However, I'm sure you realize how tough it is to shoot stuff this small.

Thank you!

 
Ptenothrix sp. new
Thx for adding the extra shot. It is definitely Ptenothrix. New species. We have it currently at www.collembola.org with tentative name Ptenothrix sp.3.

 
Very cool. I will likely go b
Very cool. I will likely go back and try to get more pictures of other collembola. In general will it be hard to ID with a shot from above? That is infinitely easier to shoot with my set up than from the side.

 
The thing is...
we can ID them by comparing the dorsal pattern with other specimens of which we know already the ID. But there is a lot of infraspecific variability of patterns... E.g. females and males (may) have a different pattern. Also juveniles (may) have different patterns. As a general rule each instar has its own pattern. Given 5 juvenile and 5 adult male and 10 adult female instars are usually present, you end up with 10 different patterns for male and 15 patterns for female specimens. To sex a specimen we need a lateral shot in which the small abdomen is in focus. But do not worry about this. Dorsal shots are fine to ID specimens on habitus shots based on an educated guess. ;-)

Moved for expert attention
Globular Springtail. Moved from ID Request.

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