Photo achieved by gently scooping some water into a container while on-site at a small freshwater pond. After photographing, the springtail was quickly returned to the same portion of the pond where it was found.

Purple-coloured digitations, either a new colour morph of H. brevispinosa, or a new cryptic species.

Three such coloured springtails were encountered (two adults of approx. 6 mm length, and one juvenile approx. 4 mm in length). The specimens possessed a dense covering of two different lengths of apically rounded dorsal digitations: the longer ones purple and shorter ones yellow/orange, with a row of lighter/white digitations on either side of the dorsal midline of each segment, running the full length of the animal. No well-developed digitations were present on the antennae, although a small, raised patch of pigmentation featured on antennal segments I and II in the adults. Based on the morphological features visible from the photographs taken (with the exception of the purple digitation colour), the species are at present considered a loose match for Holacanthella brevispinosa using the identification key of Stevens et al. (2007). However, this identification requires confirmation through proper investigation of a collected specimen (none were collected at the time due to lack of permit for invertebrate sampling on NZ Department of Conservation land).

Observation report: https://weta.ento.org.nz/index.php/weta/article/view/429

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