Oxygen consumption is a double-edged sword for organisms. Whereas it is key to the production of energy, it gives rise to toxic molecules such as hydroxyl radicals that can lead to death if accumulated in excess (Abele, 2002; Silva et al., 2010). Under certain conditions, the generation of high levels of toxic oxygen (reactive oxygen species, ROS) or nitrogen (reactive nitrogen species, RNS) can overcome the endogenous antioxidant capacity and cause oxidative stress. This in turn may trigger oxidative damage to proteins, lipids, and DNA, resulting in the deterioration of cells and tissues (Costantini, 2014; Garratt & Brooks, 2012; Pamplona & Costantini, 2011). Hence, avoiding damage to biomolecules by controlling pro-oxidant production is an essential aspect of the health and survival of animals (Garratt & Brooks, 2012). Given the importance of oxidative stress, females would prefer males exhibiting sexual traits that honestly portray their oxidative stress status (Garratt & Brooks, 2012; Metcalfe & Alonso-Alvarez, 2010; von Schantz et al., 1999). This hypothesis predicts that females would prefer males with elaborate sexual signals, which, in turn, are resistant to oxidative stress, compared with males with underdeveloped sexual signals and confronting oxidative stress. This hypothesis has been tested mainly with vertebrate models (Martínez-Lendech et al., 2018) and with a focus limited to visually perceived characteristics (Garratt & Brooks, 2012). Hence, it is necessary to determine in invertebrates whether sexual traits other than visual signals could be an indicator of the oxidative stress status of males.