Flight is the main form of dispersion for adult triatomines. It is postulated here that some body morphological parameters vary in T. guasayana according to a greater or lesser wing development, which would allow to estimate their flight capacity. Furthermore, there are observations which allow to suggest that the wings alone would not present the entirety of the information on the flight ability of an insects. It is postulated here that some body morphological parameters vary in T.guasayana according to a greater or lesser wing development. The study aims to verify the hypothesis that the variation of the wing phenotype in triatomines is accompanied by variations of other body structures, particularly the head. Geometric morphometry of heads, thorax width and wing length of T.guasayana brachypterous and macropterous was used. The results allow to confirm that there is a relationship between the wing condition of T. guasayana and other variables – unrelated to wings – that can be associated with flight capacity. The shape of the head changes with the wing condition. The results obtained suggest that the diversity of wing morphotypes imply a diversity in head conformation, suitable for flight: macropterous have a greater distance between eyes and shorter heads, while brachy or micropterous exhibit smaller eyes and larger heads. For the first time, brachypterous individuals of T.guasayana are recorded here, posing the existence of a pronounced alary polymorphism in this species. Identifying these markers in triatomines is of special importance to understand the processes of domicile recolonization after vector control campaigns.

中文翻译：

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与短翅目 Triatoma guasayana（半翅目，赤翅目）相关的形态变化及其与飞行的关系

飞行是成人triatomines的主要分散形式。这里假设根据或多或少的翅膀发育，T. guasayana 的一些身体形态参数会有所不同，这将允许估计它们的飞行能力。此外，有观察结果表明，单靠翅膀并不能提供有关昆虫飞行能力的全部信息。这里假设根据或多或少的翅膀发育，T.guasayana 中的一些身体形态参数会有所不同。该研究旨在验证以下假设，即三角翼的翅膀表型的变化伴随着其他身体结构的变化，特别是头部。使用了 T.guasayana 短翅目和巨翅目的头部、胸宽和翼长的几何形态学。结果允许确认 T. guasayana 的机翼状况与其他与机翼无关的变量之间存在关系，这些变量与飞行能力相关。头部的形状随着翅膀的状态而变化。获得的结果表明，翅膀形态类型的多样性意味着头部构象的多样性，适合飞行：大翅目的眼睛和较短的头部之间的距离更大，而短翅目或微翅目则表现出较小的眼睛和较大的头部。此处首次记录了 T.guasayana 的短翅个体，表明该物种存在明显的 alary 多态性。识别 triatomines 中的这些标记对于了解病媒控制活动后的住所重新定殖过程具有特别重要的意义。