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| Format: | Recurso digital |
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Zenodo
2025
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| Accès en ligne: | https://doi.org/10.5281/zenodo.15216805 |
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- <p><b>34. <i>Magnaspina siamensis</i> (Sinev et Sanoamuang, 2007)</b></p><p><b>Localities and specimens found: 25</b> – 2♀ em; <b>26</b> – 1♀, 1♀ ov.</p><p><b>Distribution and ecology.</b> <i>Magnaspina siamensis</i> (formerly <i>Alona siamensis</i> Sinev et Sanoamuang, 2007) is a rare species described from Thailand, an endemic to the Oriental region (Sinev & Sanoamuang 2007; Sinev 2016). Currently, the species is also known from Malaysia, Laos, India and South Vietnam (Korovchinsky 2013; Kotov <i>et al.</i> 2013b; Sinev & Korovchinsky 2013; Sinev 2016; Sousa & Padhye 2020). In Vietnam, <i>Magnaspina siamensis</i> was first recorded as <i>Alonella dentifera</i> Sars, 1901 by Shirota (1966) (see Remarks below for details).</p><p>The lifestyle and ecology of <i>Magnaspina siamensis</i> are little studied. To date, this chydorid has been discovered mainly in small, vegetated water bodies, namely swamps, rice fields, ponds, ditches, floodplains (Sinev & Sanoamuang 2007; Sinev & Korovchinsky 2013; Sousa & Padhye 2020; Choedchim & Maiphae 2023). In our material, a few individuals of this species were found in the open and overgrown littoral of a small reservoir (see Appendix 1).</p><p><b>Remarks.</b> It should be noted that probably all records of <i>Alonella dentifera</i> -like populations (later known as <i>Alona</i> or <i>Coronatella dentifera</i> (Sars, 1901)) from the Oriental region (e.g., by Shirota (1966), Idris & Fernando (1981), Idris (1983), Maiphae <i>et al.</i> (2005, 2008), etc.) are in fact <i>Magnaspina siamensis</i> too (Sinev & Sanoamuang 2007; Van Damme <i>et al.</i> 2010; Chartejee <i>et al.</i> 2013; Kotov <i>et al.</i> 2013b; Van Damme & Sinev 2013; Sousa <i>et al.</i> 2016b; Choedchim & Maiphae 2023). The recent species <i>M. dentifera</i> (Sars, 1901), the “successor” of <i>Alonella dentifera</i>, originally described from Brazil, is now considered an inhabitant of the Neotropics only (Sousa <i>et al.</i> 2016b).</p>