Triatomines (Heteroptera: Reduviidae) include around 139 species, widely known as vectors of Chagas disease. Our aim is to review the existing knowledge of the genital morphology and sexual behavior and provide some functional analysis of these traits in triatomines. A complex set of traits comprise genitalia and these are highly variable among species. The components of the phallus and seminal products (secreted by action of testes and two accessory glands) interact to allow successful sperm transfer to the female spermathecae (usually a pair of blind tubes that emerge from the common oviduct). Seminal products may inhibit female physiology and extend mating duration. Mating behavior in triatomines is best characterized as scramble competition. We suggest that males may evaluate female condition prior to copulation, given that female fitness is largely affected by food (blood) source. Although rearing several triatomine species may be difficult and discourage from undertaking studies on this group, any further investigation on sexual behavior and mating interactions may provide data for applicative studies including Chagas disease vectors control.

中文翻译：

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Triatomine bug（Reduviidae：Triatominae）中的生殖器形态和交配行为。

Triatomines（Heteroptera：Reduviidae）包括约139种，被广泛称为恰加斯病的媒介。我们的目的是回顾有关生殖器形态和性行为的现有知识，并提供对这些功能的功能分析。一组复杂的特征包括生殖器，并且这些特征在物种之间变化很大。阴茎和精液的成分（通过睾丸和两个附属腺的作用分泌出来）相互作用，使精子成功转移到雌性精子囊（通常是从普通输卵管中出来的一对盲管）。精液可能会抑制雌性生理并延长交配持续时间。三氢嘧啶的交配行为最能描述为争夺竞争。我们建议男性可以在交配之前评估女性状况，鉴于女性的健康状况很大程度上受食物（血液）来源的影响。尽管饲养几种三松散碱物种可能很困难，并且不鼓励对此人群进行研究，但是对性行为和交配相互作用的任何进一步调查都可能为包括查加斯病病媒控制在内的应用研究提供数据。