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Aphididae (Hemiptera) on ornamental plants in Córdoba (Argentina) Aphididae (Hemiptera) en plantas ornamentales de Córdoba (Argentina)  [cached]
Alfonsina Szpeiner
Revista de la Sociedad Entomol?3gica Argentina , 2008,
Abstract: In 30 surveys across Cordoba city and surroundings (Argentina) I recorded, from November 2001 to May 2002, a total of 109 ornamental plants infested with aphid colonies. Surveys were conducted in the local botanical garden as well as homestead gardens and nurseries. Seventeen species of aphids were identified, 4 of which are new species in the area, from 47 ornamental plants. In a total of 59 plant/aphid associations, 38 new associations were found. I present the first record of aphids colonizing Cactaceae in Argentina. Most aphid colonies were medium and a high proportion (more than 40%) showed alate individuals. The most frequent aphid species, Aphis gossypii Glover and Aphis craccivora Koch were especially associated with the most frequent damages: curled leaves or buds and necrosis, respectively. More than 30% of aphid colonies were attended by ants. Camponotus Mayr and Prenolepis Mayr were the ant genus attending the highest number of aphid species. En 30 censos realizados en la ciudad de Córdoba y alrededores (Argentina) se registraron, entre noviembre de 2001 y mayo de 2002, un total de 109 plantas ornamentales infestadas de colonias de áfidos. Los censos fueron realizados en jardines, viveros y el jardín botánico de la ciudad. Se identificaron 47 especies de plantas ornamentales infestadas con 17 especies de áfidos (4 nuevas en el área). Se establecen 59 relaciones áfido/planta, de las cuales 38 son nuevas. Se obtuvo el primer registro de áfidos que colonizan Cactaceae en Argentina. La mayoría de las colonias de áfidos fueron medianas y una alta proporción (más del 40 %) mostró individuos alados. Aphis gossypii Glover y Aphis craccivora Koch, fueron las especies más frecuentes y generaban los da os más conspicuos, como el enrollamiento y la necrosis foliar. Más del 30% de las colonias estuvieron atendidas por hormigas, siendo Camponotus Mayr y Prenolepis Mayr los géneros de hormigas que frecuentaban el mayor número de especies de áfidos.
Cochinillas (Hemiptera: Coccoidea) presentes en plantas ornamentales de la Argentina
Granara De Willink, María C.;Claps, Lucía E.;
Neotropical Entomology , 2003, DOI: 10.1590/S1519-566X2003000400013
Abstract: many native and exotic plants are cultivated at urban environments, where they provide shade and appeal to our aesthetic sensibilities. almost no research has been done on the coccoidea associated with ornamentals in the neotropics, although they seem especially well adapted for survival in urban ecosystems. the objective of this paper is to provide information about some scale insects families that attack ornamentals in argentina. this work was accomplished by examining scale insects in argentine collections, as well as by studying new material collected in the field, or sent for identification by colleagues throughout the country. ninety species of coccoidea were identified, belonging to eigth families, and 53 genera. fifty-two species of diaspididae, 15 pseudococcidae, 18 coccidae, only one species in asterolecaniidae, eriococcidae, lecanodiaspididae, margarodidae, and ortheziidae families were found. seventy-one species are cosmopolitans and 19 endemics. about 190 ornamental species in many different families were affected. a list of the scale insects in alphabetical order, hosts, distribution, economic importance, relevant bibliography, and an alphabetical host plants list, with the scale insects affecting them, are given.
Primeiro registro de Aphis craccivora Koch 1854 (Hemiptera: Aphididae) sobre plantas daninhas em Santa Maria, RS
Sturza, Vinícius Soares;Dequech, S?nia Thereza Bastos;Machado, Sérgio Luiz de Oliveira;Poncio, S?nia;Bolzan, Anderson;Guths, Candice;
Ciência Rural , 2011, DOI: 10.1590/S0103-84782011001100001
Abstract: aphis craccivora koch (hemiptera: aphididae) is an aphid pest which occurs in different crops and causes damages related to habit of sucking sap. in brazil information about host weed species are rare, particulary in rio grande do sul (rs) state. weeds infested by aphids were found at an experimental area located at the universidade federal de santa maria, santa maria, rs, in two different dates, february 22nd and march 25th 2010. in the second record (march 25th), each weed plant was measured and evaluated on the number of aphids. the aphid species was identified as aphis craccivora and the host weed as amaranthus hybridus linnaeus, 1753 (amaranthaceae), and solanum americanum mill, 1768 (solanaceae). this is the first report of both a. hybridus and s. americanum hosting a. craccivora in santa maria, rio grande do sul state.
Intera??o silício-imidacloprid no comportamento biológico e alimentar de Schizaphis Graminum (Rond.) (Hemiptera: Aphididae) em plantas de trigo
Costa, Rosane Rodrigues;Moraes, Jair Campos;Costa, Ronelza Rodrigues da;
Ciência e Agrotecnologia , 2009, DOI: 10.1590/S1413-70542009000200014
Abstract: the greenbug schizaphis graminum (rond.) (hemiptera: aphididae) is one of the main pest insects on wheat crop, being capable of leading a plant to death by sap suction and toxin injection, in addition to transmitting viruses. a strategy recommended to the management of aphids on wheat is the use of selective insecticides, mainly in the seed treatment. this way, in this research, the objective was to monitor the feeding behavior of s. graminum on wheat plants treated with silicon and/or imidachloprid, in addition to evaluate some biological features of the insect. the experiment was carried out at the entomology department, ufla, on wheat cultivar embrapa 22, s. graminum, 1% silicic acid, and imidachloprid seed treatment. the biology assay was conduced, starting at 15, 30, and 45 days after the seed germination, and the honeydew excretion was evaluated. the treatments were distributed in factorial scheme 2 (with silicon and without silicon) x 2 (with imidachloprid and without imidachloprid), with 10 replicates. it was observed that the systemic insecticide imidachloprid acts as a deterrent on adults and it is lethal on nymphs of s. graminum up to 45 days after seed treatment. furthermore, the plants treated with silicon showed resistance to s. graminum.
Asociaciones áfido-parasitoide (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae) en cultivos hortícolas orgánicos en Los Cardales, Buenos Aires, Argentina
Andorno,Andrea V.; López,Silvia N.; Botto,Eduardo N.;
Revista de la Sociedad Entomol?3gica Argentina , 2007,
Abstract: ten aphid species (hemiptera: aphididae) were found parasitized by seven aphid parasitoid species (hymenoptera: braconidae, aphidiinae) on organic vegetable crops. myzus persicae (sulzer) was the most frequent aphid found on a wide variety of crops, with the largest parasitoid diversity associated. aphidius colemani viereck was the most frequent aphidiine attacking several species of aphids. eight tritrophic associations involving aphidius matricariae haliday are reported for the first time for argentina.
Asociaciones áfido-parasitoide (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae) en cultivos hortícolas orgánicos en Los Cardales, Buenos Aires, Argentina Aphid-parasitoid associations (Hemiptera: Aphididae; Hymenoptera: Braconidae, Aphidiinae) on organic vegetable crops in Los Cardales, Buenos Aires, Argentina  [cached]
Andrea V. Andorno,Silvia N. López,Eduardo N. Botto
Revista de la Sociedad Entomol?3gica Argentina , 2007,
Abstract: Diez especies de áfidos (Hemiptera: Aphididae) se hallaron parasitados por siete especies de parasitoides (Hymenoptera: Braconidae, Aphidiinae) en cultivos hortícolas orgánicos. Myzus persicae (Sulzer) fue el áfido más frecuentemente encontrado sobre una amplia variedad de cultivos, y con mayor diversidad de parasitoides asociados. Aphidius colemani Viereck fue el afidiino más usual, que ataca varias especies de áfidos. Ocho asociaciones tritróficas, involucrando Aphidius matricariae Haliday, han sido registradas por primera vez para la Argentina. Ten aphid species (Hemiptera: Aphididae) were found parasitized by seven aphid parasitoid species (Hymenoptera: Braconidae, Aphidiinae) on organic vegetable crops. Myzus persicae (Sulzer) was the most frequent aphid found on a wide variety of crops, with the largest parasitoid diversity associated. Aphidius colemani Viereck was the most frequent aphidiine attacking several species of aphids. Eight tritrophic associations involving Aphidius matricariae Haliday are reported for the first time for Argentina.
Aphids (Hemiptera: Aphididae) of midfield thickets in an agricultural landscape
Janina Bennewicz
Polish Journal of Entomology / Polskie Pismo Entomologiczne , 2012, DOI: 10.2478/v10200-011-0060-x
Abstract: The occurrence and structure of associations and communities of aphids (Hemiptera: Aphididae) in different types of midfield thickets (boundaries, bushes and "forest islands") characteristic of the Lower Vistula River Valley region are described. The study shows that midfield thickets in an agricultural environment are more attractive to aphids than those in a landscape park. It indicates that aphids choose sites with a superior availability and quantity of food and where midfield thickets border a large area of fields under cultivation. Midfield thickets are habitats which are either not inhabited by aphid species considered to be plant pests, or are treated by them as sites for further dispersal. Moreover, the aphids are often subspecies not regarded as pests, as in the case of Aphis fabae, or they feed mainly on herbaceous plants, like Hyalopterus pruni, which is most commonly recorded on common reed.
A new species of Hyperomyzus (Neonasonovia) (Hemiptera: Aphididae) from Jamaica
Hall, Tannice A;Garraway, Eric;
Neotropical Entomology , 2009, DOI: 10.1590/S1519-566X2009000600011
Abstract: hyperomyzus (neonasonovia) pullatus hall & garraway sp. n (hemiptera: aphididae) is described based on apterous specimens collected from eupatorium sp., (asteraceae) in jamaica. photos and illustrations are provided. it is compared with an undescribed species from costa rica. it is distinguished from hyperomyzus (neonasonovia) nigra (baker) by having narrower siphunculi, less secondary rhinaria and a longer rostrum.
Acyrthosiphon (A.) loti (Hemiptera: Aphididae) hallado sobre alfalfa en la Argentina Acyrthosiphon (A.) loti (Hemiptera: Aphididae) founded on Lucerne in Argentina  [cached]
Jaime Ortego,Milagros P. Mier Durante
Revista de la Sociedad Entomol?3gica Argentina , 2003,
Abstract: Se informa del hallazgo por primera vez en la Argentina y en América del Sur de Acyrthosiphon ( A. ) loti (Theobald) (Aphididae), una especie de pulgón que puede colonizar fabáceas cultivadas, entre ellas la alfalfa ( Medicago sativa L.) Se comentan las peculiaridades de los ejemplares estudiados y se modifica una clave existente para separar las siete especies de pulgones halladas sobre esta especie de leguminosa en la Argentina. Acyrthosiphon ( A. ) loti (Theobald) (Aphididae) has been found for the first time in Argentina and South America, on cultivate lucerne ( Medicago sativa L.) (Fabaceae). This is the seventh aphid species recorded in Argentina on lucerne. The peculiar characteristics of studied specimens are given. Modifications to a previous identification key are presented.
First report of Idiopterus nephrelepidis Davis, 1909 (Hemiptera: Aphididae) from Bulgaria  [PDF]
Elena Tasheva-Terzieva,Maria Yovkova,Anelia Pencheva
ZooNotes , 2011,
Abstract: Idiopterus nephrelepidis (Hemiptera: Aphididae) is reported for the first time in Bulgaria on ornamental ferns in four greenhouses in Sofia and Varna. Dense colonies of apterous viviparous females and larvae were observed. The established host plants are Nephrolepis exaltata, Asplenium nidus and Pteris cretica. Infested ferns exhibit leaf deformation. The aphids were reared in laboratory conditions for four months. A morphometric study of apterae was carried out. Taking into account the presence of host plants of I. nephrelepidis in Bulgaria which are native to the local flora and the reports of the aphid from the Balkan area, it may spread in the country outdoors.
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