Resumen Se amplía el conocimiento sobre la distribución geográfica de Aedes patersoni Shanon y Del Ponte, Ae. scapularis (Rondani), Culex dolosus (Lynch Arribálzaga), Mansonia indubitans Dyar y Shannon, Psorophora cingulata (Fabricius), Toxorhynchites haemorrhoidalis separatus (Lynch Arribálzaga), Tx. purpureus (Theobald), Tx. theobaldi s. l. Dyar & Knab y Uranotaenia lowii Theobald en el Noroeste de Argentina. Asimismo, brindan las primeras localidades conocidas para Ma. indubitans en la provincia de Salta y para Ae. serratus (Theobald), Ma. titillans (Walker) y Ps. ciliata (Fabricius) en la provincia de Jujuy. Se discute sobre la presencia de Ae. fulvithorax (Lutz) en la provincia de Salta, de Ps. pallescens Edwards en la provincia de Jujuy, de Ur. pulcherrima Lynch Arribálzaga en Santiago del Estero y de Anopheles pictipennis (Philippi) en Argentina. Esta contribución actualiza la lista de mosquitos para las provincias del noroeste argentino, incrementando su número en Jujuy, La Rioja, Salta, Santiago del Estero y Tucumán a 68, 26, 102, 29 y 70 especies, respectivamente. Adicionalmente, se aporta información sobre el hábitat en el que se recolectaron y la importancia sanitaria de las especies mencionadas, así como una lista completa de las especies presentes en las provincias del noroeste argentino.

Abstract The knowledge about the geographical distribution of Aedes patersoni Shanon and Del Ponte, Ae. scapularis (Rondani), Culex dolosus (Lynch Arribálzaga), Mansonia indubitans Dyar and Shannon, Psorophora cingulata (Fabricius), Toxorhynchites haemorrhoidalis separatus (Lynch Arribálzaga), Tx. purpureus (Theobald), Tx. theobaldi s. l. Dyar & Knab and Uranotaenia lowii Theobald in the Northwest of Argentina is extended. Likewise, they provided the first known localities for Ma. indubitans in the province of Salta and for Ae. serratus (Theobald), Ma. titillans (Walker) and Ps. ciliata (Fabricius) in the province of Jujuy. The presence of Ae. fulvithorax (Lutz), Ps. pallescens Edwards in Jujuy, Ur. pulcherrima Lynch Arribálzaga in Santiago del Estero and Anopheles pictipennis (Philippi) in Argentina, is discussed. This contribution updates the list of mosquitoes for the northwestern provinces of Argentina, increasing their numbers of species in Jujuy, La Rioja, Salta, Santiago del Estero and Tucumán to 68, 26, 102, 29 and 70 species, respectively. Additionally, information on the habitat of immature stages and the sanitary importance of the species mentioned is provided, as well as a complete list of the species present in the northwestern provinces of Argentina.

Abstract Haemagogus leucocelaenus (Diptera: Culicidae) is considered the primary vector of yellow fever virus (Flaviviridae) in wild environments in South America. Previous research has defined Hg. leucocelaenus as a wild species with phytotelmata-type breeding sites. The objective of this study was to report the temporal and space occurrence of Hg. leucocelaenus at the microscale in the wild-periurban fringe through a systematic and spatially stratified sampling using 81 ovitraps between April 2019 and February 2020 in the locality of Puerto Iguazú, Argentina. Of the total ovitraps, eight were positive for Hg. leucocelaenus, six in the wild environment and two in the periurban environment. Regarding the time distribution, 98.5% of the occurrence was concentrated in November and December 2019 towards the beginning of the rainy season. The results confirm the habitat plasticity of Hg. leucocelaenus and establish the aptitude of artificial containers as a methodology in monitoring studies, since they illustrate the potential of wild populations to deposit fertile eggs in them at least up to 300 m from the wild-periurban fringe. This work is a contribution to determine the temporal and space risk of yellow fever virus transmission in the region, based on the distribution patterns of this species as a function to the ecotone associated with forest borders and climatic variables.

Resumen Haemagogus leucocelaenus (Diptera: Culicidae) se considera el principal vector del virus de la fiebre amarilla (Flaviviridae) en entornos silvestres de Sudamérica. Investigaciones anteriores han definido a Hg. leucocelaenus como una especie silvestre con sitios de reproducción natural en fitotelmata. El objetivo de este estudio fue reportar la ocurrencia espacio-temporal de Hg. leucocelaenus a microescala en la franja silvestre-periurbana a través de un muestreo sistemático y espacialmente estratificado utilizando 81 ovitrampas realizado entre abril del 2019 y febrero del 2020 en la localidad de Puerto Iguazú, Argentina. Del total de las ovitrampas colocadas, ocho fueron positivas para Hg. leucocelaenus, seis en el ambiente selvático y dos en el periurbano. En cuanto a la distribución temporal, el 98,5% de las apariciones se concentraron en noviembre y diciembre de 2019, hacia el inicio de la temporada lluviosa. Estos resultados confirman la plasticidad del hábitat de Hg. leucocelaenus y establecen la aptitud de los contenedores artificiales como metodología en los estudios de seguimiento, ya que ilustran el potencial de las poblaciones silvestres para depositar huevos fértiles en ellos, al menos hasta 300 m de la franja silvestre-periurbana. Este trabajo es una contribución al riesgo espacio-temporal de transmisión del virus de la fiebre amarilla en la región, a partir de los patrones de distribución de esta especie en función del ecotono asociado a los bordes silvestres y variables climáticas.

ABSTRACT The redescription of male, female, pupa and larva of Anopheles (Anopheles) annulipalpis Lynch Arribálzaga, 1878 is presented. The species is included in the Cycloleppteron Series of Anopheles, although several authors consider that this is artificial. The redescription of Anopheles annulipalpis demonstrate that pupae have laticorn trumpet. By this fact is compared with An. grabhamii Theobald, 1901 and similar species of the Arribalzagia Series and Myzorhynchus Series. The laticorn type of trumpet joined the other differences and similarities found are sufficient to remove An. annulipalpis of Cycloleppteron Series and included as an unplaced member of the Angusticorn Section.

The following species represent first records for Argentina: Culex (Anoedioporpa) canaanensis Lane & Withman, Culex (Anoedioporpa) originator Gordon & Evans, Culex (Culex) declarator Dyar & Knab, Culex (Melanoconion) ribeirensis Forattini & Sallum, Culex (Microculex) neglectus Lutz, Culex (Microculex) pleuristriatus Theobald, Orthopodomyia fascipes (Coquillett) and Wyeomyia (Wyeomyia) medioalbipes Lutz. The species Anopheles (Nyssorhynchus) guarani Shannon and Ochlerotatus (Ochlerotatus) rhyacophilus (Da Costa Lima), recorded for Argentina, were recently resurrected from the synonymy of Anopheles (Nyssorhynchus) lutzii Cruz and Ochlerotatus (Ochlerotatus) scapularis (Rondani). The following species represent the first report for Misiones Province: Anopheles (Anopheles) neomaculipalpus Curry, Coquillettidia (Rhynchotaenia) fasciolata (Lynch Arribálzaga), Culex (Culex) acharistus Root, Culex (Culex) tatoi Casal & García, Culex (Culex) usquatus Dyar. With these new records the number of mosquito species for Misiones Province increases to 189 while for Argentina to 242.

Las siguientes especies representan el primer registro de la Argentina: Culex (Anoedioporpa) canaanensis Lane & Withman, Culex (Anoedioporpa) originator Gordon & Evans, Culex (Culex) declarator Dyar & Knab, Culex (Melanoconion) ribeirensis Forattini & Sallum, Culex (Microculex) neglectus Lutz, Culex (Microculex) pleuristriatus Lutz, Orthopodomyia fascipes Coquillett y Wyeomyia (Wyeomyia) medioalbipes Lutz. Las especies Anopheles (Nyssorhynchus) guarani Shannon y Ochlerotatus (Ochlerotatus) rhyacophilus (Da Costa Lima) fueron recientemente rescatadas de la sinonimia de Anopheles (Nyssorhynchus) lutzii Cruz y Ochlerotatus (Ochlerotatus) scapularis (Rondani). Las siguientes especies corresponden a nuevos registros de la provincia de Misiones: Anopheles (Anopheles) neomaculipalpus Curry, Coquillettidia (Rhynchotaenia) fasciolata (Lynch Arribalzaga), Culex (Culex) acharistus Root, Culex (Culex) tatoi Casal & García, Culex (Culex) usquatus Dyar y Toxorhynchites (Lynchiella) guadeloupensis (Dyar & Knab). Con estos nuevos registros el número de especies citadas se eleva a 189 de la provincia de Misiones y 242 de Argentina.

The oviposition period of Aedes aegypti L. was studied for Santa Rosa, La Pampa, Argentina. Ovitraps were placed during the year 2011 in five different locations of this city and weekly samplings were carried out during that year. The relationship between temperature and weekly oviposition activity was also studied and a stop in the oviposition activity was observed when the temperature dropped below 16°C. These data allow us to extend the knowledge of this vector in the provincial capital, providing as well the necessary information to implement control measures in this city.

Se estudió el período de oviposición de Aedes aegypti L. para Santa Rosa, La Pampa, Argentina. Se ubicaron ovitrampas, durante el año 2011, en cinco ubicaciones diferentes de la ciudad. Se las revisó semanalmente durante todo ese año. También se estudió la relación entre temperatura y actividad de oviposición semanal, observándose un cese en la actividad de oviposición cuando la temperatura media descendió por debajo de los 16°C. Estos datos permiten ampliar el conocimiento de este vector en la capital de la provincia, información necesaria para la implementación de medidas de control en dicha ciudad.

We report the first record of Culex interfor Dyar, Culex lahillei Bachmann y Casal, Culex pipiens Linneo, Culex saltanensis Dyar, Culex tatoi Casal & García and Psorophora discrucians Walker for La Pampa Province. These records increase the number of species present in the province from 10 to 16. In addition, the geographical distribution of Aedes aegypti Linneo, Culex apicinus Philippi, Culex brethesi Dyar, Culex maxi Dyar, Culex quinquefasciatus Say and Ochlerotatus albifasciatus Macquart in the same Province is expanded.

Se reporta la primer captura de Culex interfor Dyar, Culex lahillei Bachmann y Casal, Culex pipiens Linneo, Culex saltanensis Dyar, Culex tatoi Casal & García y Psorophora discrucians Walker, para la provincia de La Pampa. Estos registros elevan el número de especies conocidas en la provincia de 10 a 16. Se amplía, además, la distribución geográfica de Aedes aegypti Linneo, Culex apicinus Philippi, Culex brethesi Dyar, Culex maxi Dyar, Culex quinquefasciatus Say y Ochlerotatus albifasciatus Macquart dentro de la provincia.

On the basis of recently collected specimens belonging to Odonata (Coenagrionidae, Aeshnidae, Gomphidae, and Libellulidae), Hemiptera (Corixidae and Notonectidae) and Diptera (Ceratopogonidae and Culicidae), new records and new localities of aquatic insects for the Somuncurá plateau and its area of influence (Argentinean Patagonia) are provided. Forty seven species in 20 genera are recorded, 25 of which for the first time from the area. Of them, 17 represent new records from Somuncurá, four from extra-andean Patagonia, one from Patagonia and three species are new to science. Two genera are recorded for the first time from Somuncurá, one of which is new from extra-andean Patagonia. The identity of five species previously recorded is established. Taking into account the preliminary inventory and recent bibliography, the total number of aquatic insects registered from the Somuncurá plateau increases to 104 species, grouped in 53 genera.

Se brindan nuevas citas y localidades de los insectos acuáticos de la Meseta de Somuncurá y su área de influencia (Patagonia, Argentina), sobre la base de recolecciones de los órdenes Odonata (familias Coenagrionidae, Aeshnidae, Gomphidae y Libellulidae), Hemiptera (familias Corixidae y Notonectidae) y Diptera (familias Ceratopogonidae y Culicidae). Se registran 47 especies (agrupadas en 20 géneros), de las cuales 25 se citan por primera vez para el área. De ellas, 20 representan nuevos registros para Somuncurá (incluso tres especies nuevas para la ciencia), cuatro nuevas para la Patagonia extra-andina y una para la Patagonia. Se mencionan por primera vez dos géneros para Somuncurá, uno de los cuales es nuevo para la Patagonia extra-andina. Asimismo, se esclarece la identidad de cinco especies citadas previamente. Teniendo en cuenta el inventario preliminar y bibliografía reciente, el número total de especies de insectos acuáticos registrados en la Meseta de Somuncurá asciende a 104, agrupadas en 53 géneros.

Twenty one new records and 12 new distributional records of species of the genus Anopheles Meigen, Coquillettidia Dyar, Culex L., Haemagogus Williston, Ochlerotatus Lynch Arribalzaga, Onirion Harbach & Peyton, Orthopodomyia Theobald, Psorophora Robineau-Desvoidy, Sabethes Robineau-Desvoidy, Stegomyia Theobald, Toxorhynchites Theobald are reported. Comments and changes in the status of species of Howardina Theobald, Ochelrotatus and Lutzia Theobald are included. Currently, in Argentina are present 226 species distributed in 23 genera.

Se presentan 21 nuevos registros de especies y se amplía la distribución de otras 12 especies de los géneros Anopheles Meigen, Coquillettidia Dyar, Culex L., Haemagogus Williston, Ochlerotatus Lynch Arribalzaga, Onirion Harbach y Peyton, Orthopodomyia Theobald, Psorophora Robineau-Desvoidy, Sabethes Robineau-Desvoidy, Stegomyia Theobald, Toxorhynchites Theobald. Se incluyen comentarios y cambios de estatus para especies de Howardina Theobald, Ochlerotatus y Lutzia (Theobald). Actualmente, en la Argentina se hallan presentes 226 especies distribuidas en 23 géneros.

From September 1993 to August 2001, 7,190 phlebotomine were collected with CDC light trap in an endemic area for human leishmaniasis, in the departments of Misiones and Itapúa, Paraguay. Eleven species were identified: Lutzomyia neivai (93.7%), L. whitmani (4.1%), and L. fischeri, L. shannoni, L. migonei, L. misionensis, L. cortelezzii, L. pessoai, L. alphabetica, Brumptomyia avellari and B. guimaraesi (less than 1%). The last three species are new records for the country. The biodiversity and phlebotomine abundance were associated with the proximity to primary forest or gallery forest, but L. neivai was also found in peridomestic periurban environment. L. neivai was found throughout the year, and showed a period of higher activity from September to April (spring to fall) with a unimodal or bimodal pattern in relation to the annual rainy peaks during the summer. Background literature about phlebotomine from Paraguay has been reviewed.

A species of the Lutzomyia oswaldoi group is recorded from the Valcheta stream basin, Somuncura plateau, Patagonia. It represents the World southermost record of a species of Phlebotominae, apparently supporting the hypothesis about the relictual character of several components of the Somuncura plateau biota, particularly for those species belonging to the Paranaense lineages.

The first epidemic tegumentary leishmaniasis´ outbreak in the province of Misiones was recorded in 1998, in the locality of Puerto Esperanza. Phlebotominae collected in the region, previously or simultaneously to the outbreak (September 1993-December 1998) showed that the species Lutzomyia intermedia s. l. was prevalent (94%, n 6,150) at all the sites sampled with miniature light trap (10) and Shannon trap (3). L. pessoai, L. whitmani, L. migonei, L. shannoni, L. fischeri, L. misionensis, Brumptomyia avellari and B. guimaraesi were also captured. Sand fly distribution in time and space suggests that in the province of Misiones (1) the species already present before 1990 could give rise to the epidemic by the density/dispersion fluctuation of their local populations; (2) the abundance of L. intermedia s. l. was associated with environments with ecotones of primary-secondary vegetation, close to water bodies and with moderate human disturbance; (3) this species showed, towards the end of 1997, peaks of exceptional abundance, subsequent to rainfall peaks in 1996. This increase in abundance of potential vector sand fly populations close to houses with colonizable surroundings could have generated the 1998 epidemic outbreak.