Marta S. Loiácono

National University of La Plata | UNLP · Museo de La Plata

En esta contribución se presenta la información actualizada de los diaprioideos y se efectúa una recopilación acerca de indicadores biológicos -representatividad taxonómica y geográfica– aplicados a los ejemplares de la colección de Diaprioidea del Museo de La Plata, Argentina. Respecto a las subfamilias Ambositrinae y Diapriinae, el 62.3% y el 64,...

Telenomus pachycoris (Johnson) (Hymenoptera: Scelionidae) is a parasitoid of eggs of Pachycoris torridus (Scopoli) (Hemiptera: Scutelleridae), a main pest of physic nut (Jatropha curcas L.; Euphorbiaceae). The objective of this work was to know the biology of T. pachycoris in P. torridus eggs under various conditions in order to develop a rearing t...

This work is a brief outline of the consumption and use of several insect taxa and products taking into account historical sources of the 18th century for the Gran Chaco region and more recent ethnographic data. The Meridional and Central Chaco subregion of Argentina is a vast semi-arid plain in the north-east of the country between the Pilcomayo r...

We report the occurrence of an unidentified species of the wasp Microctonus Wesmael (Hymenoptera: Braconidae) parasitizing adults of the Fuller’s rose weevil Naupactus cervinus (Boheman) (Coleoptera: Curculionidae), a widespread pest of economically important crops included in the South American tribe Naupactini. Cytochrome c oxidase subunit I-base...

This study evaluated the occurrence of parasitoids in eggs of the stink bug, Edessa meditabunda (Fabricius, 1794) (Heteroptera, Pentatomidae) found on lettuce crop in Mato Grosso State, Brazil. Samples were collected in the vegetable garden “Cheiro Verde”, in the municipality of Tangará da Serra, in curly lettuce. A bed of lettuce was selected rand...

Szelenyiopria talitae sp. nov. is described and illustrated. This species is shown to be a larval parasitoid of Acromyrmex subterraneus subterraneus (Forel).

We provide an overview of diapriid wasps associated with ants in Argentina and the diversity of interactions they have developed with their hosts. As a result, we report 16 species of nine genera of Diapriinae, two new geographic distributions, three new association records, illustrations, and photographs. We highlight myrmecophile symphylic specie...

Esta contribución se refiere a la aplicación de indicadores biológicos -representatividad taxonómica y geográfica- a la colección de Diapriidae depositada en la División Entomología del Museo de La Plata. El análisis dio como resultado: Ambositrinae y Diapriinae, 62.03% y 64.28% de ejemplares identificados a nivel genérico respectivamente y Belytin...

Egg parasitoids of the stink bug Edessa meditabunda (F) were studied on rattlepod Crotalaria spectabilis used in soybean crop rotation in Campo Novo do Parecis, Mato Grosso state, central western Brazil. Seven species of parasitoids were found: two Encyrtidae, one Eurytomidae, and four Platygastridae. The occurrence of Trissolcus euchisti (Ashmead)...

La "avispa de la agalla del eucalipto", Leptocybe invasa Fischer & Lasalle (Hymenoptera: Eulophidae: Tetrastichinae) ha sido registrada en varios países como una importante plaga forestal. Su presencia en Brasil desde 2008 en híbridos de Eucalyptus, representaba una amenaza potencial de ataque para las plantaciones de la Argentina, hecho comprobado...

Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) is the main stink bug in the agricultural-grazing production systems of Uruguay. This species causes losses in soybeans and grazing legumes and accounts a few reports of natural enemies. In order to assess the incidence of egg parasitoids for this pentatomid in soybeans and forage legumes in...

A number of wasps in the family Diapriidae, subfamily Diapriinae (Proctotrupoidea), are parasitoids that specialize on ant larvae. These wasps are abundant and diverse in the Neotropics, but little is known about their biology. We studied parasitism rates by an array of diapriine wasps that attack the larvae of fungus-growing ants, Trachymyrmex cf....

This contribution provides new parasitoid/host associations for scelionid species distributed in Argentina, Brazil, Colombia and Uruguay, and new geographic records. The parasitoid species examined belong to the genera Gryon Haliday, Phanuropsis Girault, Trissolcus Ashmead, and Telenomus Haliday, and all of them attack insect pests. Three cases of...

Diapriids are predominately known as parasitoids of fly pupae. According to Huggert and Masner (1983), representatives of three subfamilies of ants (Myrmicinae, Formicinae and Dorylinae) are the known hosts of myrmecophilic diapriinae wasps (Diapriidae: Diapriinae); within the Myrmicinae, the genera known to be associated with diapriines are Soleno...

Seven species of Baeus occur in the Neotropical and Andean regions: B. achaearaneus Loiácono, B. auraticeps Girault, B. kuscheli Ogloblin, B. latrodecti Dozier, B. metazygiae Loiácono et Margaría, B. platensis (Bréthes), and B. ventricosus Ogloblin. All of them are associated with spiders of the families Araneidae and Theridiidae. In this study, a...

This study is a supplement of a previous list of Hymenoptera, parasitoids and predators of insects from Argentina (De Santis & Esquivel, 1966). We provide 392 insect hosts and 1003 associations. The highest number of associations has been recorded for Hemiptera.

Se describe e ilustra Telenomus chrysoperlae sp. nov. (Hymenoptera) que se comporta como parasitoide de huevos de Chrysoperla asoralis (Bank) (Neuroptera) en Mendoza, Argentina. Se compara con las especies afines T. chrysopae Ashmead y T. tridentatus Johnson & Bin.Telenomus chrysoperlae sp. nov. (Hymenoptera) egg parasitoid of Chrysoperla asoralis...

Two new species, Baeus anelosimus sp. nov. and Baeus jabaquara sp. nov., are described and illustrated from specimens reared from eggs of the subsocial spider species Anelosimus studiosus and A. jabaquara respectively. They mainly differentiate based on habitus, body color, pilosity, antennal morphology, and wing venation. An identification key is...

Se examinaron y listaron los 183 especímenes tipo de Chalcididae (1), Eucharitidae (3), Eurytomidae (127), Leucospidae (2), Tanaostigmatidae (41) y Torymidae (9) (Hymenoptera: Chalcidoidea) depositados en las colecciones de la División Entomología del Museo de La Plata. Para cada taxón se proporciona la información de etiqueta original y en algunos...

In this paper we listed and examined four type specimens of Ceraphronoidea, 94 of Cynipoidea and 198 of "Proctotrupoidea" (Hymenoptera) housed at the Museo de La Plata, Argentina (División Entomología) not included in previous papers. We also provide update information on categories of types, data of collection and hosts for all cases. These types...

The 20 type specimens of Eupelmidae and 230 of Trichogrammatidae (Hymenoptera: Chalcidoidea) housed at the Museo de La Plata, Argentina (División Entomología) were examined and listed, providing update information on categories of types, data of collection and hosts. The types belong to six species of Eupelmidae described by De Santis, and 26 of Tr...

The main purposes of this paper are to describe the larva of Anthonomus rubricosus Boheman (Curculionidae: Anthonomini) and to provide new information on its host plants. The species is similar to Anthonomus vestitus Boheman, based on the presence of four epipharyngeal sensilla arranged in a single cluster and the labial palpus one-segmented. It di...

Se describe Baeus metazygiae sp. nov. como endoparasitoide de ootecas de la araña Alpaida veniliae (Araneidae) de Rio Grande, Brasil. Se brinda un listado de las especies neotropicales del género Baeus, incluyendo nuevos registros de distribución y huéspedes.

Fueron examinados y listados los 293 tipos de Aphelinidae y 24 de Signiphoridae depositados en el Museo de La Plata (División Entomología), para cada taxón se brinda la información actualizada acerca de los materiales tipo, datos de recolección y huéspedes. Estos tipos pertenecen a 30 especies y dos subespecies de Aphelinidae descriptas por los sig...

This study reports the first occurrence of Coptera haywardi Loiácono as a pupal parasitoid of fruit-infesting Tephritidae in Brazil. We reared this diapriid from fruits of Eugenia uniflora (Surinam cherry) infested by Anastrepha fraterculus (Wiedemann) and/or Anastrepha sororcula Zucchi. We also identified two other species of pupal parasitoids: Pa...

The wasps of the "Proctotrupoidea complex" (Ceraphronoidea, Proctotrupoidea y Platygasteroidea) are a very large and diverse group of parasitic Hymenoptera. It is a relatively old group, with fossils from the Jurassic period. All of them are parasitoids or hiperparasitoids of other arthropods, attacking most groups of terrestrial insects as well as...

A redescription of the genus Bruchopria and its two species, B. hexatoma Kieffer (female and male) and B. pentatoma Kieffer (male only) is presented. New record for B. hexatoma from Argentina is provided. Some aspects of diapriid biology with emphasis on their myrmecophilic evidence and association with ants are discussed. Scanning photographs of m...

Seven new species of Gymnopria Loiácono from Brazil are described and illustrated: Gymnopria clavata, G. coriacea, G. distinguenda, G. elongata, G. masneri, G. minima and G. pilosa. A generic redescription of Gymnopria and a key to species are given. A cladistic analysis of the nine known species, using Szelenyiopria Fabritius to root the tree, res...

Seven new species of Gymnopria Loiacono from Brazil are described and illustrated: Gymnopria clavata, G. coriacea, G. distinguenda, G. elongata, G. masneri, G. minima and G. pilosa. A generic redescription of Gymnopria and a key to species are given. A cladistic analysis of the nine known species, using Szelenviopria Fabritius to root the tree, res...

The solitary egg parasitoids (Hymenoptera: Scelionidae) of Pentatomidae species complex are potential candidates for soybean (Glycine max L.) integrated pest management programs in Brazil. The correct identification of species and strains of these parasitoids is necessary to implement the use of biological control. Polymerase chain reaction (PCR) w...

A survey of egg parasitoids of soybean Pentatomidae was carried out in Planaltina, DF, Brazil. Twelve species of egg parasitoids (Telenomus edessae Fabricius, Telenomus podisi Ashmead, Telenomus sp., Trissolcus basalis (Wollaston), Trissolcus brochymenae Ashmead, Trissolcus sp., Trissolcus teretis Johnson, Trissolcus urichi Crawford; Anastatus auri...

The mortality of Euschistus heros (F.) at the egg stage was studied at the field. The experiments were carried out in Planaltina - D.F., Brazil, in 1993 and 1994, on sunflower (Helianthus annuus) cultivated following the soybean (Glycine max) crop season. Egg masses found in the field were marked and checked daily for four days, and taken to the la...

The mortality of Euschistus heros (F.) at the egg stage was studied at the field. The experiments were carried out in Planaltina - D.F., Brazil, in 1993 and 1994, on sunflower (Helianthus annuus) cultivated following the soybean (Glycine max) crop season. Egg masses found in the field were marked and checked daily for four days, and taken to the la...

RESUMEN. Se realizó el análisis crítico y se listaron los 195 especímenes tipo de Pteromalidae (Chalcidoidea) depositados en las colecciones de la División Ento-mología del Museo de La Plata. Para cada taxón se brinda la información ac-tualizada acerca de los materiales tipo. Estos tipos pertenecen a 38 especies de Pteromalidae des criptas por Blan...

RESUMO - Este estudo relata a primeira ocorrência de Coptera haywardi Loiácono como parasitóide de pupa de Tephritidae que infestam frutos no Brasil. Este diapriídeo foi obtido de frutos de Eugenia uniflora (pitanga) infestados por Anastrepha fraterculus (Wiedemann) e/ou Anastrepha sororcula Zucchi. Foram também identificadas outras duas espécies d...