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Gastropteron minutum  Ong & Gosliner, 2017

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Gastropteron minutum is characterized by its clear to to translucent white colour with white and orange speckling.
let me quote Ong, Hallas & Gosliner (2017): "External morphology: Living animal 2–3 mm in length (Fig. 1A, B). Preserved holotype <1 mm in length (Fig. 2A). Ground colour of head shield, parapodia, visceral hump and flagellum almost colourless with opaque white and orange mottling speckling body. Orange and off-white spots condensing around visceral hump to form low, rounded tubercles and covering parapodia. Head shield and flagellum having fewer spots, almost clear. Head shield narrow anteriorly, broadening out before again narrowing posteriorly. Posteriorly, head shield forming a simple rolled siphon without medial crest. Parapodia covering visceral hump when retracted. At posterior end of visceral hump, elongate, acutely pointed flagellum extending posteriorly. Foot extending posteriorly, almost entire length of animal from head to end of visceral hump. At posterior end, foot narrowing into elongate, acutely pointed posterior tip. Gill situated on right side of body and consisting of seven tiny lamellae."
The above specimen was by Andrey Ryanskiy identified, thanks!.
Reference:
Ong E., Hallas J.M. & Gosliner T.M. (2017). Like a bat out of heaven: the phylogeny and diversity of the bat-winged slugs (Heterobranchia: Gastropteridae).
Zoological Journal of the Linnean Society. DOI: 10.1093/zoolinnean/zlw018., available online at https://doi.org/10.1093/zoolinnean/zlw018
How to cite:
Köhler, E. (2019), published 26 July 2019, Gastropteron minutum  Ong & Gosliner, 2017
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Gastropteron_minutum.htm

 
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