A new Anagrus (Hymenoptera: Mymaridae) from Argentina, an egg parasitoid of Delphacodes sitarea (Hemiptera: Archaeorrhyncha: Delphacidae)

A new species of the mymarid wasp genus Anagrus Haliday is described from the Province of Tucumán, Argentina. The type series of A. Anagrus miriamae, S. Triapitsyn and Virla sp. nov. was reared from eggs of the planthopper Delphacodes sitarea Remes Lenicov and Tesón on a common pasture and lawn grass, Stenotaphrum secundatum (Walter) Kuntze. Both the parasitoid and its host are widely distributed in Argentina. Anagrus Haliday is described from the Province of Tucumán, Argentina. The type series of A.(Anagrus) miriamae S. Triapitsyn and Virla sp. nov. was reared from eggs of the planthopper Delphacodes sitarea Remes Lenicov and Tesón on a common pasture and lawn grass, Stenotaphrum secundatum (Walter) Kuntze. Both the parasitoid and its host are widely distributed in Argentina.Fil: Triapitsyn, Serguei. University of California; Estados UnidosFil: Virla, Eduardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentin

Egg Parasitoids of Proconiini (Hemiptera: Cicadellidae) in Northwestern Mexico, with Description of a New Species of Gonatocerus (Hymenoptera: Mymaridae)

Nine species of Mymaridae and Trichogrammatidae parasitic on eggs of Proconiini sharpshooters (Cicadellidae: Cicadellinae) were collected in northwestern Mexico in relation to neoclassical biological control efforts against glassy-winged sharpshooter, Homalodisca vitripennis (Germar), in California. Gonatocerus chula Triapitsyn and Bernal sp. n., which belongs to the ater species group of Gonatocerus Nees (Mymaridae), is described. Specimens of G. chula sp. n. were reared from eggs of the smoke-tree sharpshooter, Homalodisca liturata Ball, on jojoba [Simmondsia chinensis (Link) C. K. Schneider] leaves collected in central Sonora state, Mexico. Also given are new data on other egg parasitoids of Homalodisca spp. and Oncometopia spp. in Sinaloa and Sonora states, Mexico, including Gonatocerus atriclavus Girault, G. morrilli (Howard), and G. novifasciatus Girault, and the Trichogrammatidae Burksiella sp(p)., Ittys sp., Pseudoligosita sp., Ufens ceratus Owen, and U. principalis Owen. For the first time, a species of Ittys is recorded from eggs of Proconiini, and U. principalis from Mexico. Colonies of G. atriclavus, G. novifasciatus and Pseudoligosita sp. were successfully established in a quarantine laboratory at University of California, Riverside, on eggs of the glassy-winged sharpshooter. These three parasitoid species had never been reared under laboratory conditions. In addition, seven species of Proconiini were collected in central and northwestern Mexico: Cyrtodisca major (Signoret), Homalodisca insolita (Walker), H. liturata Ball, Oncometopia sp. cf. clarior (Walker), O. sp. cf. trilobata Melichar, O. (Similitopia) sp., and Phera centrolineata (Signoret). Oncometopia sp. cf. clarior, O. sp. cf. trilobata, and O. (Similitopia) sp. appeared to be undescribed species

A New Host Record for the Egg Parasitoid Anagrus nigriventris (Hymenoptera: Mymaridae) of the Corn Leafhopper, Dalbulus maidis (Hemiptera: Cicadellidae)

A survey of the eggs parasitoids of the corn leafhopper, Dalbulus maidis (DeLong & Wolcott) was carried out in Tucumán Province, Argentina. Samples were collected during the summer of 2004-2005 with sentinel eggs. Anagrus nigriventris Girault was responsible for 7.2% of the total egg parasitism. That is the first record of this parasitoid reared from the eggs of D. maidis; A. nigriventris is one of three species of Anagrus known to affect populations of this leafhopper pest in Argentina.Fil: Luft Albarracin, Erica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Virla, Eduardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Triapitsyn, Serguei V.. University of California; Estados Unido

New World Stephanocampta (Hymenoptera: Mymaridae)—descriptions of a new species from Argentina and of the male of S. masoni

The genus Stephanocampta Mathot (Hymenoptera: Mymaridae) includes only two previously described species, S. yaosekoensis Mathot from the Democratic Republic of the Congo (Mathot 1966) and S. masoni (Yoshimoto) from Costa Rica and Panama (Yoshimoto 1990). Here we describe and illustrate a new species from Argentina based on a female, illustrate both sexes and newly describe the male of S. masoni, and provide a key to differentiate females of the three species.Fil: Aquino, Daniel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; ArgentinaFil: Triapitsyn, Serguei V.. University of California; Estados Unido

Annotated key to the genera of Mymaridae (Hymenoptera: Chalcidoidea) in Argentina

A key to the genera of Mymaridae occurring in Argentina is given, and information on the 178 determined and several undetermined species in 35 genera is provided, including data on their distribution and host associations. New host records are provided for several species of Anagrus Haliday and Gonatocerus Nees. The genus Kikiki Huber & Beardsley is recorded for the first time from the New World, and the genera Australomymar Girault, Camptopteroides Viggiani, Gahanopsis Ogloblin, Myrmecomymar Yoshimoto, and Ptilomymar Annecke & Doutt are reported for the first time from Argentina. Eucleruchus Ogloblin, syn. nov. is synonymized under Cleruchus Enock, and its type species E. neivai Ogloblin is transferred to Cleruchus as C. neivai (Ogloblin), comb. nov.Fil: Luft Albarracin, Erica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Triapitsyn, Serguei V.. University of California; Estados UnidosFil: Virla, Eduardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentin

Taxonomic identification and biological traits of Platystethynium triclavatum (Donev & Huber, 2002), comb. n. (Hymenoptera, Mymaridae), a newly recorded egg parasitoid of the Italian endemic pest Barbitistes vicetinus (Orthoptera, Tettigoniidae)

The little known fairyfly (Hymenoptera, Mymaridae), Platystethynium (Platystethynium) triclavatum (Donev & Huber, 2002), comb. n. from Pseudocleruchus Donev & Huber, 2002, is newly recorded as an egg parasitoid of Barbitistes vicetinus Galvagni & Fontana, 1993 (Orthoptera, Tettigoniidae). This bush-cricket is endemic to northeastern Italy (mainly Euganean Hills of Veneto Region), where it has recently become an economically significant agricultural and forest pest. Data on discovery, distribution, and some remarkable biological traits of this gregarious egg parasitoid are presented. Its identification and availability of many well-preserved fresh specimens have made possible to re-define Pseudocleruchus Donev & Huber, 2002 syn. n., with type and the only described species Pseudocleruchus triclavatus Donev & Huber, 2002, as a synonym of Platystethynium Ogloblin, 1946 and its nominate subgenus, P. (Platystethynium), and also to describe the brachypterous male of P. (Platystethynium) triclavatum. It is the first known male for the entire genus. Enlarged mandibles of the megacephalous males are used to chew holes in the hard chorion of the host egg, allowing fully winged females, whose mandibles are strongly reduced and do not cross over, to emerge after mating with the males inside it. Up to 136 individual parasitoids (about 77 on average) can hatch from a single egg of B. vicetinus, with their sex ratio being strongly female biased (80–97% females per egg)

Taxonomic notes on primary and secondary parasitoids (Hymenoptera: Encyrtidae and Signiphoridae) of Hypogeococcus spp. (Hemiptera: Pseudococcidae) in Argentina

Se presenta una revisión de los himenópteros parasitoides y sus hiperparasitoides, asociados a Hypogeococcus spp. (Hemiptera: Pseudococcidae), cochinillas que se alimentan de Alternanthera spp., otra Amaranthaceae y diversas cactáceas nativas (Cactaceae). Estas especies de himenópteros parasíticas fueron recogidas y criadas en el curso de un estudio realizado en Argentina durante 2010-2014. De particular interés son los encírtidos (Encyrtidae) parasitoides primarios de H. pungens Granara de Willink que son potenciales candidatos de control biológico de Hypogeococcus sp. (comúnmente llamado «Harrisia cactus mealybug» e identificado como H. pungens pero que posiblemente no pertenezca a esta especie) que amenaza cactus nativos de algunas islas del Caribe y Florida, Estados Unidos, y está devastando a los cactus columnares nativos de Puerto Rico. Leptomastidea sp. (Encyrtidae) es registrado por primera vez para Argentina como un parasitoide primario de Hypogeococcus spp., incluso de H. pungens. Los dos hiperparasitoides colectados en Argentina son Chartocerus ?axillaris De Santis (Signiphoridae) y Prochiloneurus sp. (Encyrtidae); este último pertenece a una especie no descripta. Además se proveen notas taxonómicas de Gyranusoidea pseudococci (Brèthes) (Encyrtidae) [= Leptomastidea pseudococci Brèthes, para el cual se designó un lectotipo]; también es un parasitoide primario de pseudocóccidos pero no de Hypogeococcus spp.A review is presented of the hymenopterous parasitoids, and their hyperparasitoids, associated with Hypogeococcus spp. (Hemiptera: Pseudococcidae), mealybugs that feed on Alternanthera spp., other Amaranthaceae, and various native cacti (Cactaceae). These parasitic Hymenoptera species were collected and reared in the course of a survey conducted in Argentina during 2010-2014. Of particular interest are the encyrtid (Encyrtidae) primary parasitoids of H. pungens Granara de Willink which are potential candidate biological control agents against a Hypogeococcus sp. (commonly called the Harrisia cactus mealybug and identified as H. pungens but possibly not belonging to that species) which threatens the native cacti in some Caribbean islands and Florida, USA, and is devastating the native columnar cacti in Puerto Rico. A Leptomastidea sp. (Encyrtidae) is for the first time recorded from Argentina as a primary parasitoid of Hypogeococcus spp. including H. pungens. The two hyperparasitoids collected in Argentina are Chartocerus ?axillaris De Santis (Signiphoridae) and Prochiloneurus sp. (Encyrtidae); the latter belongs to an undescribed species. Taxonomic notes are also provided on Gyranusoidea pseudococci (Brèthes) (Encyrtidae) [= Leptomastidea pseudococci Brèthes, for which a lectotype is designated]; it is also a primary mealybug parasitoid but not of Hypogeococcus spp.Fil: Triapitsyn, Serguei V.. University of California; Estados UnidosFil: Aguirre, María Belén. Fundación para el Estudio de Especies Invasivas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Logarzo, Guillermo Alejandro. Fundación para el Estudio de Especies Invasivas; ArgentinaFil: Dal Molin, Ana. Texas A&M University; Estados Unido

Leafhopper host plant associations for Anagrus parasitoids (Hymenoptera: Mymaridae) in the Okanagan Valley, British Columbia

Anagrus spp. are important natural regulators of leafhoppers infesting grapes, tree fruits, and other crops in south central British Columbia (BC). Predominantly four species of these egg parasitoids, A. atomus (L.), A. avalae Soyka, A. daanei Triapitsyn, and A. erythroneurae Triapitzyn and Chiappini, were reared from dormant host plants and from summer host plants in the Okanagan Valley. The largest numbers of Anagrus specimens were collected from roses, Rosa spp; blackberry, Rubus spp; apple, Malus domestica; and other members of the rose (Rosaceae) family. Species of mint, family Lamiaceae, were important host plants for several species, with lavender, Lavendula angustifolia, and garden sage, Salvia oficinalis, being both a summer and winter host plant for some species. The most likely leafhopper host on these plants is the mint leafhopper, Eupteryx melissae Curtis. This study contributes to our knowledge of the biology of Anagrus species in south central BC and could contribute to future efforts to preserve or enhance populations of these beneficial insects

Bionomics of Oncometopia tucumana (Hemiptera: Cicadellidae), a sharpshooter from Argentina, with notes on its distribution, host plants, and egg parasitoids

Bionomics of the proconiine sharpshooter Oncometopia tucumana Schröder (Hemiptera: Cicadellidae) from northern Argentina is reported. Leafhoppers were monitored during the entire season in a citrus orchard in Horco Molle, Tucumán Province, and also sampled in Jujuy and Salta Provinces. The sharpshooters were found from spring to late fall; they overwinter as adults and females do not lay eggs from Apr to Oct. Oncometopia tucumana is polyphagous, 12 plants in 11 families were recorded as its hosts for the first time. Egg masses of O. tucumana were attacked by 3 parasitoid species, Gonatocerus annulicornis (Ogloblin), G. metanotalis (Ogloblin), and G. tuberculifemur (Ogloblin) (Hymenoptera: Mymaridae), that collectively produced egg mortality close to 60%. Gonatocerus annulicornis was the main egg parasitoid, emerging from nearly 80% of the parasitized eggs.En este trabajo se informan aspectos biológicos del proconino Oncometopia tucumana Schróder (Hemiptera: Cicadellidae) en el norte de Argentina. Las chicharritas fueron monitoreadas durante todo un año en un cultivo de citrus en Horco Molle, provincia de Tucumán, así como en las provincias de Jujuy y Salta. Estas chicharritas fueron encontradas desde la primavera hasta finales del otoño, pasando el invierno como adultos y sus hembras no depositan huevos durante dicho período, entre abril y octubre. Oncometopia tucumana es polífaga y habiendo sido registrada en 12 plantas hospedadoras, pertenecientes a 11 familias. Las posturas de O. tucumana son atacadas por tres especies de parasitoides, Gonatocerus annulicornis (Ogloblin), G. metanotalis (Ogloblin) y G. tuberculifemur (Ogloblin) (Hymenoptera: Mymaridae), quienes en conjunto producen una mortalidad de huevos cercana al 60%. Gonatocerus annulicornis fue el principal parasitoide oófago, emergiendo de aproximadamente un 80% de los huevos parasitizados.Facultad de Ciencias Naturales y Muse

A new Gonatocerus (Hymenoptera: Mymaridae) from Argentina, with taxonomic notes and molecular data on the G. tuberculifemur species complex

Gonatocerus deleoni Triapitsyn, Logarzo & Virla sp. n., reared from sentinel eggs of Tapajosa rubromarginata (Signoret) (Cicadellidae: Cicadellinae: Proconiini) on citrus plants, a new member of the ater species group of Gonatocerus Nees (Mymaridae), is described from the state of Mendoza, Argentina. Taxonomic notes and host association data are provided to help differentiate this new species from the morphologically similar but genetically distinct taxon, G. tuberculifemur (Ogloblin). The female of the latter is redescribed and the male is newly described. Gonatocerus deleoni, G. tuberculifemur, and three forms (different molecular clades) comprise the G. tuberculifemur complex. These forms are identified but not formally described because of lack of morphologically distinguishing features. The taxonomic conclusions are supported by molecular data, and by results of reciprocal cross-breeding experiments between most of them.Fil: Triapitsyn, Serguei V.. University of California; Estados UnidosFil: Logarzo, Guillermo Alejandro. United States Department of Agriculture. Agricultural Research Service; ArgentinaFil: de León, Jeese H.. United States Department of Agriculture. Agricultural Research Service; ArgentinaFil: Virla, Eduardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentin