Mallomonas vietnamica Gusev, Kezlya & Tran, 2021

Gusev, Evgeniy, Kezlya, Elena, Tran, Hoan & Kulikovskiy, Maxim, 2021, Mallomonas vietnamica Gusev, Kezlya & Tran, sp. nov. (Synurales, Chrysophyceae), a new species, that shares some features with fossil taxa, Cryptogamie, Algologie 20 (3), pp. 39-46 : 40-41

Mallomonas vietnamica Gusev, Kezlya & Tran , sp. nov.

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HOLOTYPE SPECIMEN. — Portion of a single gathering of cells on SEM stub No. BaVi 17 deposited at the Herbarium, Papanin Institute for Biology of Inland Waters RAS, Borok ( IBIW). Material from the Da river (Sông Đà), Hanoi, Vietnam, collected by E.S. Gusev on 7.V.2019. Figure 2A illustrates a representative scale from the holotype specimen.

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TYPE LOCALITY. — Vietnam, Hanoi, the Da river (Sông Đà), latitude/longitude: 21°5.673’N, 105°19.149’E .

EPITHET. — Species name derived from “ Vietnam ”, country from which this taxon was described.

DISTRIBUTION. — To date, Mallomonas vietnamica Gusev, Kezlya & Tran , sp. nov. has only been observed in the type locality. At the time of collection, the pH was 7.82, specific conductance 153 ΜS·cm-1, and temperature 25°C.

Figures

FIG. 2. — Mallomonas vietnamica Gusev, Kezlya & Tran sp. nov. scanning electron microscopy images (SEM: A-J): A-D, scales with recessed domes, shifted to the right part of the scales, oriented at different angles to the longitudinal axis (Fig. 2A is a representative scale from the holotype specimen); E-F, undersurface view of the scales; G, long straight bristle; H, J, tips of bristles with teeth; I, foot of the bristle. Scale bars: A, B, D, I, 1 μm; C, E, F, H, J, 2 μm; G, 10 μm.