Los quilópodos escolopendromorfos del Museo de La Plata

Fil: Coscarón, Sixto. UNLP. FCNyM. Zoología Vertebrado

The subgenus Scaptia (Lepmia) fairchild: redescription of females and description of a male (Diptera: Tabanidae: Pangoniinae)

The subgenus Scaptia (Lepmia) Fairchild, known only from mountanous areas of Southeast of Brazil, is redescribed and illustrated. It is contrasted with similar species of Scaptia (Pseudoscione). It is more similar to the Australian Myioscaptia and Plinthina than to the other New World Scaptia subgenera.Facultad de Ciencias Naturales y Muse

Description of male, larva and pupa of <i>Stibasoma theotaenia</i> (Wiedemann) (Diptera-Tabanidae)

Unknown male, larva and pupa of Stibasoma theotaenia from northern Argentina are described and illustrated. Larvae were collected from terrestrial Bromeliaceae of Aechnea sp. and maintained in the laboratory through development.Facultad de Ciencias Naturales y Muse

The Preimaginal Stages of Cryptotylus unicolor (Wiedemann) and Tabanus nebulosus ornativentris Kroeber (Tabanidae-Diptera-Insecta)

A larva with peculiar very long pubescence on the integument, the pupa of Cryptotylus unicolor, and the larva and pupa of Tabanus nebulosus ornativentris are described and illustrated.Facultad de Ciencias Naturales y Muse

The immature stages of Myiotabanus barrettoi fairchild (Tabanidae-Diptera-Insecta)

Larva and pupa of Myiotabanus barrettoi living between leaves of Pistia stratiotes in ponds of Formosa Province (Argentina) are described. As immature stages of Lepiselaga crassipes inhabit the same environment and have very a similar appearance, new information on ornamentation and morphology is added to differentiate both species. Larvae and pupae were maintained individually in moist vials at laboratory temperature until adults emerged.Facultad de Ciencias Naturales y Muse

Luis Peña Guzmán

El 27 de septiembre de 1995 dejó de existir en Santiago, Chile, a los 74 años de edad, el Sr. Luis Peña Guzmán. Con él desaparece un reconocido entomólogo chileno, que tuvo una destacada actuación en el conocimiento de las Ciencias Naturales en la región sur occidental de América del Sur. Si bien su obra más conocida se refiere a la taxonomía y biogeografía, especialmente de Coleópteros (Tenebrionidae), su producción científica, que supera un centenar de publicaciones, abarcó otros órdenes de insectos tales como Odonata y Lepidoptera. Amante y defensor de la biota, escribió sobre divulgación en diversos ternas de Ciencias Naturales, colaborando además a través de los medios televisivos en programas de índole conservacionista.Facultad de Ciencias Naturales y Muse

The immature stages of Myiotabanus barrettoi fairchild (Tabanidae-Diptera-Insecta)

Larva and pupa of Myiotabanus barrettoi living between leaves of Pistia stratiotes in ponds of Formosa Province (Argentina) are described. As immature stages of Lepiselaga crassipes inhabit the same environment and have very a similar appearance, new information on ornamentation and morphology is added to differentiate both species. Larvae and pupae were maintained individually in moist vials at laboratory temperature until adults emerged.Facultad de Ciencias Naturales y Muse

Simuliid blackflies (Diptera: Simuliidae) and Ceratopogonid midges (Diptera: Ceratopogonidae) as vectors of Mansonella ozzardi (Nematoda: Onchocercidae) in northern Argentina

Mansonella ozzardi, a relatively non pathogenic filarial parasite of man in Latin America, is transmitted by either ceratopogonid midges or simuliid blackflies. In the only known focus of the disease in north-western Argentina the vectors have never been incriminated. This study investigated the potential vectors of M. ozzardi in this area. The only anthropophilic species of these Diptera families biting man at the time of the investigation were Simulium exiguum, S. dinellii, Culicoides lahillei and C. paraensis. Using experimentally infected flies S. exiguum and both species of Culicoides allowed full development of microfilariae to the infective stage, with C. lahillei being a more competent host than S. exiguum. Based on these data, biting rates and natural infectivity rates it is probable that at the begininning of the wet season C. lahillei is the main vector of M. ozzardi and both C. paraensis and S. exiguum secondary vectors. Additionally, it was found that a single dose of ivermectin was ineffectual in eradicating M. ozzardi from infected individuals in this area.Facultad de Ciencias Naturales y Muse

Keys and geographical distribution of the blackflies of the genus <i>Gigantodax</i> (Insecta-Diptera-Simuliidae) in Argentina

Basándose en datos preliminares, pero especialmente sobre material coleccionado y criado por el autor, se procedió a confeccionar claves para identificar los diferentes estadios de las distintas especies del género Gigantodax en la Argentina. Las especies consideradas son las siguientes: Gigantodax antarcticum, G. araueanium, G. bonorinoruin, G. chilense, G. feminoum, G. fulveseens, G. horcotiani, G. igniculum, G.marginale, G. rufescens, G. shannoni y G. wittmeri, Se incluye además la distribución geográfica de cada una de dichas especies.With preliminary records but specially based on material collected and breaded by the author, keys with the different stages of blackflies of genus Gigantodax of Argentina are maked. Species here included are: Gigantodax antarcticum, G. araucanium, G. bonorinorum, G. chilense, G. femineum, G. fulvescens, G. horcotiani, G. igniculum, G. marginale, G. rufescens, G. shannoni and G. wittmeri. Geographical distribution of each species is added.Facultad de Ciencias Veterinaria

A new species of Dasybasis Macquart from NW of Argentina (Tabanidae, Diptera, Insecta)

Female and male of Dasybasis diaguita n. sp. from high area of NW of Argentina is described and illustrated