Tenagobia incerta Lundblad, 1929

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 : 481-482

Tenagobia incerta Lundblad, 1929

Tenagobia incerta Lundblad, 1929 : Ark. Zool., 20A, 16–18.

Material examined. Galarza RS: 1 ♂, Yacaré Stream, 16.iv.2013; 9 ♂, 9 ♀, Luna Lagoon, sample 1, 17.iv.2013; 1 ♂, Luna Lagoon, sample 2, 17.iv.2013; 1 ♀, Isirí Stream near Luna Lagoon, sample 6, 17.iv.2013; 17 ♂, 20 ♀, Galarza Lagoon, Hermanos Fleita pier, 17.iv.2013; 1 ♂, Galarza Lagoon , sample 3, 18.iv.2013 ; 19 ♂, 21 ♀, flood-prone areas in Hermanos Fleita field, 18.iv.2013; 1 ♀, light trap, 16–18.iv.2013. Itatí RS: 4 ♂, 9 ♀, Estancia El Dorado , artificial pond, 28°45.60’S, 58°7.23’W, 28.iii.2014 ; 1 ♀, Corriente River , 28.iii.2014 ; 1 ♂, 3 ♀, Itatí Rincón Island , 28°42.73’S, 58°6.69’W, 29.iii.2014 ; 4 ♂, 2 ♀, Itatí marsh, 28°42.78’S 58°7.19’W, 29.iii.2014 ; 1 ♂, 5 ♀, Potrero Becasina, flood-prone areas in front of the ranger’s house, 28°44.93’S, 58°7.53’W, 30.iii.2014 ; 4 ♂, 4 ♀, Estancia El Dorado , pond, 28°45.13’S, 58°7.40’W, 30.iii.2014 ; 16 ♂, 12 ♀, place of arrival for boats, 28°44.28’S, 58°8.17’W, 30.iii.2014; 2 ♂, 5 ♀, Estancia El Dorado , artificial pond, 28°45.60’S, 58°7.23’W, 31.iii.2014 . Laguna Iberá RS: 4 ♂, Iberá Lagoon, Fraga pier, 28°31’50.00’’S, 57°11’13.68’’W, 3.xii.2012 ; 1 ♂, 6 ♀, Iberá Lagoon, Paso Claro , 28°33’29’’S, 57°11’37’’W, 16.ii.2018 ; 9 ♂, 7 ♀, artificial channel, 16.ii.2018. San Ignacio RS: 4 ♂, 1 ♀, Camping Monterrey, Aguará pedestrian path, long walkway, flood-prone areas, 27°52.213’S, 56°52.977’W, 2.iii.2015 ; 5 ♂, 2 ♀, Camping Monterrey, Aguará pedestrian path, short walkway, marshes, 27°52.152’S, 56°52.884’W, 2.iii.2015 ; 2 ♀, vehicle path, roadside marshland and ditches, 27°54.444’S, 56°53.319’W, 3.iii.2015; 2 ♂, 3 ♀, vehicle path, roadside marshland and ditches, 27°54.551’S, 56°53.254’W, 3.iii.2015; 1 ♂, vehicle path, roadside ditches, 27°53.263’S, 56°53.125’W, 3.iii.2015; 2 ♀, Camping Monterrey , ditches, 27°52.610’S, 56°52.690’W, 3.iii.2015 ; 11 ♂, 20 ♀, Camping Monterrey, Aguará pedestrian path, artificial well, 27°52.286’S, 56°52.767’W, 4.iii.2015 ; 2 ♂, 2 ♀, Reserva Privada Don Luis , Monte Don Luis, roadside ditches, 27°52.005’S, 56°55.073’W, 4.iii.2015 ; 3 ♂, 6 ♀, marshlands in front of the ranger’s house, 27°49.413’S, 56°50.929’W, 4.iii.2015; 16 ♂, 20 ♀, temporary puddle, 27°49.421’S, 56°50.877’W, 4.iii.2015; 37 ♂, 43 ♀, gate of “Las 600”, roadside marshlands, 27°50.888’S, 56°53.037’W, 5.iii.2015; 3 ♂, old pine tree forest of “Las 600”, artificial channel, 27°51.834’S, 56°54.285’W, 5.iii.2015; 1 ♀, light trap, 5.iii.2015; 1 ♀, vehicle path, roadside marshland and ditches, 27°49’26.64’’S, 56°50’52.38’’W, 17.xi.2018; 3 ♀, Camping Monterrey, Aguará pedestrian path, marshland, 27°52’14.10’’S, 56°52’59.70’’W, 18.xi.2018 ; 1 ♂, 1 ♀, Camping Monterrey, Aguará pedestrian path, long walkway, marshes, 27°52’14.58’’S, 56°52’59.76’’W, 18.xi.2018 ; 1 ♀, Camping Monterrey, Aguará pedestrian path, pond, 27°52’17.46’’S, 56°52’45.18’’W, 19.xi.2018 . San Nicolás RS: 1 ♀, Carambola Stream , 28°11.878’S, 57°26.350’W, 13.xii.2013 ; 2 ♂, 4 ♀, Carambola Stream , 28°10.866’S, 57°26.224’W, 14.xii.2013 ; 4 ♂, 3 ♀, Carambola Stream , 28°10.108’S, 57°25.787’W, 14.xii.2013 ; 1 ♀, Carambola Stream , 28°10.113’S, 57°25.788’W, 14.xii.2013 ; 1 ♂, 2 ♀, Carambola Stream , 28°11.067’S, 57°26.567’W, 14.xii.2013 ; 10 ♂, 10 ♀, light trap in the ranger station, 13–15.xii.2013. Yahaveré RS: 4 ♂, 1 ♀, Medina Lagoon, 11–13.xii.2014; 1 ♂, 4 ♀, Concepción de Yaguareté Corá, route 22, roadside marshes, 28°23’16.3”S, 57°54’25.6”W, 5.xi.2015 ; 7 ♂, 3 ♀, Campo Angelita , roadside marshes, 28°25’40.9”S, 57°49’12.3”W, 6.xi.2015 ; 1 ♀, Concepción de Yaguareté Corá, house for researchers, light trap, 28°23’25.7”S, 57°53’15.9”W, 6–7.xi.2015 .

General distribution. Panama, the Lesser Antilles, Colombia, Venezuela, Suriname, Brazil, Peru, Bolivia, Paraguay, Argentina ( Moreira et al. 2011b).

Habitat. Tenagobia incerta has been found in the margins of ditches, pools, ponds, lakes, lagoons, marshes, channels, springs, streamlets, streams and rivers ( Hungerford 1948; Nieser 1975, 1977; Poi de Neiff 1984, 1993). This species seems to prefer small and temporary habitats, with little or no vegetation, and the shallow parts of stagnant waters with little vegetation ( Nieser 1975; Bachmann 1981; Melo & Nieser 2004). It has also been taken at lights ( Hungerford 1948; Nieser 1975, 1977; Bachmann 1981).

Tenagobia incerta was previously recorded from Iberá in association with Leersia hexandra , Egeria najas and Cabomba caroliniana ( Poi de Neiff 1984, 1993, 2003). During the present study, it was collected from unshaded margins with dense floating, emergent and submerged vegetation (mainly Azolla filiculoides , Pontederia azurea , P. crassipes , P. cordata , Hydrocleys nymphoides , Nymphoides indica , Cyperus giganteus , Myriophyllum aquaticum , Leersia hexandra , Egeria densa , Sagittaria montevidensis , Salvinia biloba and Nymphaea prolifera Wiersema ) in lentic habitats (ponds, including artificial ones; Luna Laggon; Galarza Lagoon; Iberá Lagoon; Medina Lagoon; ditches; marshes; marshlands; flood-prone areas), and lotic habitats (artificial channels, Yacaré Stream, Isirí Stream, Carambola Stream and Corriente River) in standing or slow-moving water. Additional specimens of this species were taken at lights in Concepción de Yaguareté Corá, San Ignacio Ranger Station, Galarza Ranger Station, and San Nicolás Ranger Station.

Remarks. Tenagobia incerta is one of the most widespread species of water bugs in the INR. This species was often collected together with T. schadei , and only once with T. selecta tarahui .