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New two registers of Aphidophagous Coccinellids (Coleoptera: Coccinellidae) on filbert aphid, Myzocallis Coryli (Goeze) (Hemiptera: Aphididae) in Chile

Aguilera, A., Escobar S., S.
Acta horticulturae 2014 no.1052 pp. 305-308
Adalia, Corylus avellana, Eriopis connexa, Hemiptera, Hippodamia convergens, Hyperaspis, Myzocallis coryli, Scymnus, adults, farms, geographical distribution, hazelnuts, indigenous species, insect pests, national parks, orchards, predators, surveys, trees, Argentina, Chile
One of the most important insects pest associated with Corylus avellana L. is the filbert aphid, Myzocallis coryli (Goeze) (Hemiptera: Homoptera: Aphididae), considered specific and unique on hazelnut orchards in Chile. Since 1992 a survey was carried out of predators Coccinellidae (Coleoptera) each year from October to April in La Araucanía, Chile. Here, hazelnut is an important cultivated nut tree. So, in 2006 for the first time in Chile, seven species and one sub species of predators coccinellids on filbert aphid were registered. These Coccinellidae were reported as Adalia angulifera Mulsant, A. bipunctata (L.), A. deficiens Mulsant, Eriopis connexa chilensis Hofmann, Hippodamia convergens Guérin-Méneville, H. variegata (Goeze), Scymnus bicolor (Germain) and S. loewii Mulsant. In this present work two Coccinellidae are identified for the first time in Chile and the world as aphidophagous predators on filbert aphid. The two species are Eriopis eschscholtzi Mulsant and Hyperaspis sphaeridioides (Mulsant). By 8 April 2011 adults of these species were observed and collected in the south of Chile from Santa Elena farm, near the rural way Pitrufquén to Gorbea in La Araucanía Region. E. eschscholtzi is an entomophagous aphidophagous coccinellid belonging to the Coccinellinae subfamily, Coccinellini tribe. This species is reported from Argentina and in Chile, the geographical distribution corresponds from Petorca in Valparaíso Region to the National Park of Torres del Paine in Magallanes y Antártica Chilena Region. H. sphaeridioides is also an aphidophagous predator coccinellid that belongs to the Scymninae subfamily, Hyperaspidini tribe. This species is endemic of Chile and the geographical distribution corresponds from Elqui valley in the Coquimbo Region to Osorno in the Los Lagos Region.