Tiago Kütter Krolow

Chave pictórica para os gêneros de Tabanidae (Insecta: Diptera) do bioma Campos Sulinos, Rio Grande do Sul, Brasil

Krolow, T.K.; Kruger, R.F. and Ribeiro, P.B. Illustrated key for Tabanidae (Insecta: Diptera) genera of Campos Sulinos biome, Rio Grande do Sul, Brazil. Biota Neotrop. May/Aug 2007 vol. 7, no. 2. http://www.biotaneotropica.org.br/v7n2/pt/abstract?identification-key+bn03307022007. ISSN 1676-0603. Tabanids were collected and preserved along four years (2002-2006) in southern Rio Grande do Sul, Brazil. A list of 30 species is presented along with an illustrated key and diagnoses for identification of the 15 genera found in the area. Nine species are registered for the first time in the state of Rio Grande do Sul.

Description of Muscotabanus gen. nov. and Muscotabanus rafaeli sp. nov. (Diptera: Tabanidae: Diachlorini) from Amazon Basin, Brazil

A new genus of Tabanidae mimetic of flies is described: Muscotabanus new genus, Muscotabanus rafaeli new species, based on 12 females collected in the state of Amazonas, Brazil. It is presented a discussion for separating the new genus from Diachlorini species which resemblance with sarcophagids flies. It is characterised by striped thorax, banded abdomen, long slender palpus subequal antenna length, labella predominantly membranous, except for a narrow sclerotised plate, basicosta bare, wing hyaline and stigma brown.

Sobrevivência e reprodução de Synthesiomyia nudiseta (Diptera, Muscidae)

A reproducao e a sobrevivencia de Synthesiomyia nudiseta (Wulp, 1883) foram estudadas entre 22 e 28oC, UR de 70% e fotoperiodo de 12h. Os dados foram analisados atraves de classes de idade, tabelas de vida de fecundidade, analise de sobrevivencia pela distribuicao de Weibull e analise das curvas de sobrevivencia atraves do conceito de entropia (H). A taxa intrinseca de aumento natural (rm), taxa finita de aumento (l), taxa de reproducao liquida (R0) e tempo medio de uma geracao (T) foram 0,534; 1,7; 59,439 e 7,65 respectivamente, sugerindo rapido crescimento populacional nestas condicoes. Isso foi causado pela alta fecundidade, confirmando o que ocorre para esta especie, com media de 266 ovos/femea e periodo de pre-oviposicao de 10,25 dias. O modelo de Weibull demonstrou que a sobrevivencia nao foi constante ao longo da vida de adultos, com mortalidade pronunciada depois da quarta e quinta semanas e valores de H intermediarios aos valores teoricos esperados (0,0-0,5) para os ambos sexos, demonstrando que a curva de sobrevivencia e retangular (com maior impacto da mortalidade na quarta e quinta semanas apos a emergencia). Os resultados apresentados podem ser considerados como base para estudos pormenorizados da dinâmica e do crescimento populacional desta especie em habitats naturais.

Tabanidae (Diptera) no dossel da floresta amazônica atraídos por luz e descrição de machos de três espécies

Tabanids were collected at a height of 40 meters on a metallic tower, at Estacao Experimental de Silvicultura Tropical, Manaus, Amazonas, Brazil. Samples were collected monthly from January to December of 2004, during three nights of lunar transition third quarter moon/ new moon from 06 p.m. to 06 a.m. Horse flies were captured on a vertical sheet illuminated by a 250-watts mixed mercury vapor light and 20-watts black-light (BLB) lamps. 216 specimens were collected, of which 135 were males and 81 were females belonging to 29 species. Males of three species with unknown males are described for the first time, namely: Catachlorops halteratus Krober, 1931, Leucotabanus janinae Fairchild, 1970 and Leucotabanus pauculus Fairchild, 1951.

Descrição do macho de Chlorotabanus leucochlorus Fairchild (Diptera, Tabanidae)

The male of Chlorotabanus leucochlorus Fairchild, 1961 is described for the first time. The species is known from northern Brazil, Suriname, Venezuela and eastern Peru. Seven males from various locations in the state of Amazonas, Brazil were examined. The material was deposited in the Invertebrate Collections of the Instituto Nacional de Pesquisas da Amazonia (INPA) and Zoological Collection Paulo Buhrnheim (UFAM), both in Manaus, Brazil.

Seasonal patterns of horse fly richness and abundance in the Pampa biome of southern Brazil

ABSTRACT: Fluctuations in seasonal patterns of horse fly populations were examined in rainforests of tropical South America, where the climate is seasonal. These patterns were evaluated with robust analytical models rather than identifying the main factors that influenced the fluctuations. We examined the seasonality of populations of horse flies in fields and lowland areas of the Pampa biome of southern Brazil with generalized linear models. We also investigated the diversity of these flies and the sampling effort of Malaise traps in this biome over two years. All of the 29 species had clear seasonality with regard to occurrence and abundance, but only seven species were identified as being influenced by temperature and humidity. The sampling was sufficient and the estimated diversity was 10% more than observed. Seasonal trends were synchronized across species and the populations were most abundant between September and March and nearly zero in other months. While previous studies demonstrated that seasonal patterns in population fluctuations are correlated with climatic conditions in horse fly assemblages in South America rainforests, we show a clear effect of each factor on richness and abundance and the seasonality in the prevalence of horse fly assemblages in localities of the Pampa biome.

Descrição de uma nova espécie de Chlorotabanus (Insecta, Diptera, Tabanidae) da Região Neotropical

We described a new species of Tabanidae (Diptera), Chlorotabanus flagellatus sp. nov., distributed in the Amazon region, in the States of Amazonas and Para. Diagnosis, discussion and illustrations of external and internal characters are provided.

A new species of Spiroberotha Adams 1989 (Neuroptera: Berothidae) and the first record of the genus in Brazil

The genus Spiroberotha Adams, 1989 is classified in Berothidae (Neuroptera) with two described species: S. fernandezi Adams, 1989 from Venezuela and S. sanctarosae Adams, 1989 from Colombia, Costa Rica and Venezuela. Here we describe a new species, S. tocantinensis n. sp., from Palmas, Tocantins, Brazil. This is the first record of the genus in Brazil, extending its geographical distribution.

Description of Dichelacera (Dichelacera) matogrossensis sp. nov. (Diptera, Tabanidae) of Brazilian Midwestern

Dichelacera matogrossensis sp. nov. is described based on females from the Chapada dos Guimaraes, state of Mato Grosso, Brazil. Diagnosis, discussion and illustrations are provided.

The Tabanidae of the Mitaraka expedition, with an updated check list of French Guiana (Diptera)

Abstract This paper documents the horse fly fauna collected in lowland rainforest in the southwesternmost part of French Guiana (Mitaraka). During this “Our Planet Revisited” survey nine tabanid species were recorded from French Guiana for the first time: Chrysops ecuadorensis Lutz, C. incisus Macquart, Catachlorops amazonicus Henriques & Gorayeb, Chlorotabanus flagellatus Krolow & Henriques, Cryptoylus cauri Stone, Phaeotabanus phaeopterus Fairchild, Philipotabanus stigmaticalis (Kröber), Stypommisa captiroptera (Kröber) and Tabanus amapaensis Fairchild. An updated check list of Tabanidae of French Guiana is presented, including 79 species and one unidentified Chrysops.