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Siphopteron sp. 03  Genus: Gosliner, 1989

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This is an unidentified or undescribed species of the genus Siphopteron - I call it Siphopteron sp. 03, to distinguish it from other undescribed species of Siphopteron.
Siphopteron sp. 03 is characterized by a pale pink/whitish colour, yellow/orange borders at the parapodia and a distinctive yellow spot with a brown margin around the flagellum. There is a longitudinal orange line at the parapodia and a yellow medial line at the posterior end of the foot. There is an orange medial line on the headshield up to siphon, and brown bands are running from the posterior corners of the headshield up to the tip of the siphon. The flagellum is translucent pinkish with a diffuse brownish tip.
This species was identified by Dr. Juan Lucas Cervera Currado as Siphopteron sp. - and posted on 15 April 2004 at these websites as Siphopteron sp. C .
A picture of a very similar specimen from the island of Flores, Indonesia was BOW (Branch of the Week) at the Slugsite on 22 August 2011, identified by David W. Behrens as Sagaminopteron sp.
For some genera, such as Trinchesia was the alphabet almost through. I had to change the distinguishing alphabetic character into a number. I had chosen 2-digit numbers, even though '01' looks a little bit stupid, and now is only the genus italic written. Working on those changes, I followed Dave Behrens and moved this species on 15 February 2012 to the genus Sagaminopteron.
I noticed on 10 June 2017 that this species is as Siphopteron sp. 12 in Gosliner et al. (2015) page 61 and moved it back to
the genus Siphopteron  Gosliner, 1989.
Pretty similar is Siphopteron makisig which lacks the brown bordered yellow spot around the flagellum.
Gosliner, T.M, D.W. Behrens & Á.Valdés. 2015. Nudibranch &Sea Slug Identification Indo-Pacific.
New World Publications Inc. Jacksonville, FL. 408 pp.
How to cite:
Köhler, E. (2016), published 10 June 2017, Siphopteron sp. 03  Genus: Gosliner, 1989
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Siphopteron_sp_03.htm