The external morphology and distribution of the antennal sensilla of 21 species from five families of semiaquatic bugs (Gerromorpha) were examined using scanning electron microscopy. Nine main types were distinguished based on their morphological structure: sensilla trichoidea, sensilla chaetica, sensilla leaflike, sensilla campaniformia, sensilla coeloconica, sensilla ampullacea, sensilla basiconica, sensilla placoidea and sensilla bell-mouthed. The specific morphological structure of one type of sensilla (bell-mouthed sensilla) was observed only in Aquarius paludum. Several subtypes of sensilla are described, differentiated by number, location and type of sensillum characteristic for each examined taxon. The present study provides new data about the morphology and distribution of the antennal sensilla in Gerromorpha.

中文翻译：

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Gerromorpha（昆虫纲：半翅目：异翅目）触角感受器的形态学研究

使用扫描电子显微镜检查了来自 5 个半水生昆虫 (Gerromorpha) 科的 21 个物种的触角感受器的外部形态和分布。根据其形态结构区分了九种主要类型：毛状感受器、毛状感受器、叶状感受器、钟形感受器、腔感受器、壶腹感受器、基本感受器、板状感受器和钟口感受器。一种类型的感受器（喇叭形感受器）的特定形态结构仅在 Aquarius paludum 中观察到。描述了几种感受器亚型，通过数量、位置和每个检查的分类群特征的感受器类型区分。本研究提供了关于 Gerromorpha 触角感受器形态和分布的新数据。