Ranatra signoreti Montandon, 1905

Mazzucconi, Silvia Ana, Reyes, Cristina Armúa De & Estévez, Ana Lía, 2022, Aquatic and semiaquatic Heteroptera (Insecta: Hemiptera) from Iberá Natural Reserve (Corrientes Province, Argentina), Zootaxa 5104 (4), pp. 451-505 : 472

Ranatra signoreti Montandon, 1905

Ranatra signoreti Montandon, 1905 : Bull. Soc. Sci. Bucarest, 392–393.

Material examined. Galarza RS: 1 ♂, Luna Lagoon, sample 1, 17.iv.2013. Itatí RS: 1 ♂, Estancia El Dorado, artificial pond, 28°45.60’S, 58°7.23’W, 28.iii.2014. Laguna Iberá RS: 2 ♂, Lobo Cuá marsh, 28°32’37.14’’S, 57°12’3.89’’W, 2.xii.2012; 3 ♂, 5 ♀, Iberá Lagoon, Fraga pier, 28°31’50.00’’S, 57°11’13.68’’W, 3.xii.2012; 1 ♂, 1 ♀, Iberá Lagoon, 28°31’36.54’’S, 57°8’45.91’’W, 3.xii.2012; 1 ♂, 4 ♀, Iberá Lagoon, sample 2, 2.xii.2012; 1 ♀, Baletón San Pedro, 3.xii.2012 ; 3 ♂, 6 ♀, rice channel, 3.xii.2012; 1 ♀, route 40, roadside pond, 17.ii.2018. San Ignacio RS: 1 ♀, vehicle path, roadside marshland and ditches, 27°54.551’S, 56°53.254’W, 3.iii.2015; 1 ♂, vehicle path, roadside marshland and ditches, 27°49’26.64’’S, 56°50’52.38’’W, 17.xi.2018. San Nicolás RS: 1 ♂, Carambola Stream, 28°11.878’S, 57°26.350’W, 13.xii.2013; 1 ♂, Carambola Stream, 28°11.871’S, 57°26.292’W, 13.xii.2013; 1 ♂, Carambola Stream, 28°10.866’S, 57°26.224’W, 14.xii.2013; 1 ♂, 1 ♀, marshland next to the house for the rangers, 15.xii.2013.

General distribution. Venezuela, Brazil, Bolivia, Paraguay, Argentina ( Moreira et al. 2011b).

Habitat. Little information exists regarding the habitat associations of this species. It is known from rivers ( Nieser 1975) and the margins of unshaded marshlands with muddy bottoms and with dense vegetation and plant debris ( Torres et al. 2007).

At the INR, R. signoreti was collected from the margins of the Iberá Lagoon in shallow waters with emergent and floating vegetation (Estévez et al. 2003). During the present study, this species was collected from the unshaded margins with dense floating and emergent vegetation, and organic debris of lentic habitats (Luna Lagoon, Iberá Lagoon, Lobo Cuá marsh, Baletón San Pedro, marshlands and ponds) and lotic habitats (Carambola Stream, roadside ditches and rice channels).

Remarks. Ranatra signoreti was very often collected together with R. sjostedti .