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OK, Artemia parthenogenetica is not a true species, just the name given to a bunch of different parthenogenetic populations of Artemia. The correct denomination for this population is 'Artemia diploid parthenogenetic strain', but the name is still in use because no one has formally described it. Marinha da Troncalhada is one of the last refugia in Portugal of the native parthenogenetic strain from the invasive Artemia franciscana:
http://www.fc.up.pt/pessoas/nmonteir/Nuno_Monteiro_Homepage//Publications_files/wetlands.pdf

Video: https://youtu.be/zaUt7iisPhc

Photos are snapshots of the same individual in the video.

Cell size: 81 µm in length, 17 µm in max. width

Site of collection: Katsurashima Ryokuchi south pond (a freshwater habitat), Sendai, Japan

Date of collection: February 11th 2022

Weather: Sunny

Water temp.: 5.2°C

pH 6.6

Date of observation: February 13th 2022 (the collected sample in a plastic container was left near a window out of direct sunlight at room temperature until observation)

Bright field observation using a Wraymer microscope (model BX-3500TL, Osaka, Japan) equipped with a Floyd-2 HDMI ethernet digital camera (Wraymer, Osaka, Japan).