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Mourgona anisti  Yonow & K. R. Jensen, 2018

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The sacoglossan Mourgona anisti is characterized by forked rhinophores which place it clearly in the former family Caliphyllidae  Tiberi, 1881 which had been synonymized by Bouchet et al. (2017) with Hermaeidae  H. Adams & A. Adams, 1854. It has green vesicles in the translucent flattened leaf-like cerata. The whole animal is translucent, covered with whitish/cream and brownish speckling. The specimen #2 has blueish spots at the margin of the cerata.
Dr. Richard C. Willan writes on the specimens #1 and #2 (pers. comment):"I would be happy to call them both Mourgona sp. for want of another more suitable genus (that is, a genus that bears little oral tentacles)." I posted this species on 24 July 2019 at these websites as Mourgona sp. 01  Genus: Er. Marcus & Ev. Marcus, 1970,
K. R. Jensen, 2018 identified the specimens #1 and #2 as possibly Mourgona anisti  Yonow & K. R. Jensen, 2018. I changed it on 26 July 2019. The specimens #3, #4, #5, and #6, werde identified by Andrey Ryanskiy.
Let me quote Yonow & K. R. Jensen (2018): "The colour slide shows a specimen with bifid rhinophores and leaf-like cerata containing dark branches of digestive gland. The margins of the cerata are scalloped with white glands at the tips, which are particularly deeply scalloped (Fig. 7H). The rhinophores are transparent with white dots (Fig. 7H). The preserved specimen has lost almost all cerata, though some of them are present in the vial. The body is strongly contracted and curved (Fig. 22A), and hence the length measurement is approximate. Eyes are located at bases of the rhinophores. Oral tentacles are distinct, thinner than the rhinophores, and folded. Between the oral tentacles a short oral veil overhangs the mouth (Fig. 22B)."
References:
Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families.
Malacologia. 61(1-2): 1-526.
Yonow N. & Jensen K.R. (2018). Results of the Rumphius Biohistorical Expedition to Ambon (1990). Part 17. The Cephalaspidea, Anaspidea, Pleurobranchia, and Sacoglossa (Mollusca: Gastropoda: Heterobranchia).
Archiv für Molluskenkunde. 147(1): 1 - 48., available online at https://doi.org/10.1127/arch.moll/147/001-048 page(s): 41, figs 7H, 22
How to cite:
Köhler, E. (2019), published 26 July 2019, Mourgona anisti  Yonow & K. R. Jensen, 2018
available from https://www.Philippine-Sea-Slugs.com/Sacoglossa/Mourgona_anisti.htm

 
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