Table 3 in Vietnamellidae (Insecta, Ephemeroptera) of Thailand
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Table 3. Comparison of larval characteristics of known Vietnamella species.
CharactersV. thaniV. sinensisVietnamella maculosa sp. nov.Vietnamella sp. AVietnamella sp. BMaxillary palp segment ratio1.3:1.3:11:1.6:11.3:1.2:11:0.9:0.71.3:1:1.1Outer pair of projections on headWithout serrationWithout serrationWithout serrationWith serrationWith serrationMedian ridge projection of abdominal tergaPair: I-IXPair: I-XPair: I-XPair: II-IXPair: II-VI, VIII-X; single: VIIPosterolateral projection on tergite XLess developedModerately developed aWell developedModerately developed bModerately developedDistributionVietnam, Thailand, ChinaChinaThailandIndiaThailand
a Hu et al. (2017). Definition based on fig. 1A, p. 383. b Selvakumar et al. (2018). Definition based on fig. 1, p. 995.
创建时间：
2025-04-04
