Polymorphism has rarely been reported from dragonflies of the Libellulidae (Odonata: Anisoptera) family. Here, we report female-limited polymorphism in females of five species of the Libellulidae and a gynandromorph male of Brachythemis contaminata from South Asia. We describe the morphological variation between andromorph and heteromorph females, and collate records of andromorph females from various sources. Yearly number of andromorph females of Crocothemis servilia, Urothemis signata and Neurothemis tullia was calculated using records from published literature and unpublished sources, and social media.

中文翻译：

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亚洲唇形蜻蜓多态性新记录（昆虫纲：蜻蜓目）

从蜻蜓科（蜻蜓目：Anisoptera）家族的蜻蜓很少报道多态性。在这里，我们报告了五种 Libellulidae 的雌性和来自南亚的 Brachythemis contaminata 的雌雄同体型雄性的雌性限制多态性。我们描述了雄性和异形雌性之间的形态变异，并整理了来自各种来源的雄性雌性的记录。使用来自已发表文献和未发表来源以及社交媒体的记录计算了 Crocothemis servilia、Urothemis signata 和 Neurothemis tullia 的雄性型雌性的年数量。