Aphis, Linnaeus, 1758

Nafría, Juan Manuel Nieto, Ortego, Jaime, Brown, Paul A., López Ciruelos, Sara I. & Durante, M. Pilar Mier, 2019, Aphis (Hemiptera, Aphididae) species living on Baccharis (Asteraceae) in southern South America, with description of three new species, Zootaxa 4656 (1), pp. 153-167 : 155

Aphis generalist species

Studied material. Argentinean specimens in Universidad de León collection and Chilean specimens in Natural History Museum, London collection.

Aphis (A.) craccivora Koch, 1854 = CHILE, Maule: Cauquenes prov., 10 km on Cauquenes to Pelluhue road, 14-January-1985, on Baccharis sp., Hollis leg., Eastop det..

Aphis (A.) gossypii Glover, 1877 = ARGENTINA, Mendoza: Maipú dep., Maipú, 18-November-2002, on Baccharis juncea ; Tupungato dep., Cruz Negra, 3-October-1997, on B. salicifolia, Ortego leg.; same locality, 21-November-2002 and 27-November-2012, on Baccharis sp., Ortego leg .. ARGENTINA, San Luis: General Pringles dep., El Trapiche, 19-November, 2002, on Baccharis sp.; Juan Martín de Puyrredón dep., Potrero de los Funes, 19-November, 2002, on Baccharis sp. ARGENTINA, Santiago del Estero: Río Hondo dep., Termas de Río Hondo, 2-October-2009, on B. salicifolia, Ortego leg. . CHILE, Valparaíso, Marga Marga prov., Limache, 19-October -1967, on Baccharis sp., Hille Ris Lambers leg., Eastop det. .

Aphis (A.) spiraecola Patch, 1914 = CHILE, Valparaíso: Quillota prov., Nogales, 28-November-1974, on Baccharis sp., Hille Ris Lambers leg. and det. .

From the previously known Argentinean records of Aphis craccivora , A. gossypii and A. spiraecola on Baccharis species in Argentina and Chile (see Introduction) and the newly studied material, it is possible to conclude that A. gossypii is relatively frequent in colonizing plants of Baccharis in the western strip of Argentina from Jujuy (in the North) to Mendoza and also possibly in corresponding Chilean territories. On the contrary, the other two species seem not to usually colonize plants of this genus.

Baccharis juncea (Lehm.) Desf. is recorded for first time as host plant for Aphis gossypii .

On the other hand, it is interesting to note that Aphis fabae Scopoli, 1763 , another generalist species, which is known both in Argentina and Chile, has never been collected in these countries on plants of this genus of Asteraceae .