Elio Corseuil

Análise faunística de espécies de moscas-das-frutas (Diptera: Tephritidae) na região Oeste de Santa Catarina

In order to characterize the ecosystems of fruit trees of the West Region of Santa Catarina State in relation to the Tephritidae species from twelve different fruit species grown in orchards located in four counties (Chapeco, Cunha Pora, Sao Carlos and Xanxere), McPhail traps, baited with glucose 10%, were used to sample flies, from October 1998 to September 2000. To characterize the faunistic fruit flies populations of each county, the abundance index, constancy, dominance and frequency of fruit flies population were analyzed. A total of 8,393 specimens of fruit flies were collected, belonging to 20 species in seven genera. In Chapeco, 17 fruit flies were sampled, corresponding to an index of diversity of 2.0, followed by Cunha Pora with ten species and an index of 1.5. In Xanxere the index was 1.1 to eight species. The smallest index was found in Sao Carlos (0.9), to seven species. Ceratitis capitata (Wied.) was found accidental in almost all the orchards, with exception to one orange orchard in Sao Carlos, where it was accessory. Anastrepha fraterculus (Wied.) was the predominant species in the four counties.

Culicinae (Diptera, Culicidae) ocorrentes no Estado do Rio Grande do Sul, Brasil

This work lists the species of Culicinae recorded in the State of Rio Grande do Sul, Brazil. The present data is based on adult collections carried out in 11 physiographic zones from September/2001 to August/ 2002, published literature and entomological collection records. Fifty-seven species are listed, including 22 new occurrences to Rio Grande do Sul. The present study increased the geographic distribution range of Aedeomyia squamipennis, Culex chidesteri, Culex quinquefasciatus, Haemagogus leucocelaenus, Mansonia titillans, Ochlerotatus albifasciatus, Ochlerotatus crinifer, Ochlerotatus fluviatilis, Ochlerotatus scapularis, Ochlerotatus serratus, Psorophora confinnis, Psorophora ferox, Sabethes aurescens, Trichoprosopon pallidiventer and Uranotaenia lowii.

Diversidade de Arctiinae (Lepidoptera, Arctiidae) capturados com armadilha luminosa, em seis comunidades no Rio Grande do Sul, Brasil

The Arctiinae fauna of Camaqua, Irai, Lagoa Vermelha, Mostardas, Piratini, and Sao Pedro da Serra, were studied. The moths were caught by using light traps, once a month in the new moon phase, from January 1998 to December 1999. The species richness, abundance, constancy, as well as, the diversity and evenness indexes of Shannon and Brillouin, were used to evaluate the communities. Analysis of variance was used to evaluate the variation of individuals among months and localities. In order to estimate the species richness for each locality the nonparametrics statistics procedures Bootstrap, Chao 1, Chao 2, Jackknife 1, Jackknife 2 and Michaelis-Mentem have been used. A total of 9,800 specimens of Arctiinae belonging to 192 species, into 6 tribes were collected. The abundance and species richness were greater in 1998 than in 1999. The highest values of diversity indices in 1998 were found in Camaqua, Irai and Sao Pedro da Serra; however in 1999 Irai, Piratini and Sao Pedro da Serra were the districts with highest diversity. According to species richness estimators could be found more 34% of species in Camaqua, 18% in Irai, 75% in Lagoa Vermelha, 47% in Mostardas, 66% in Piratini and 43% in Sao Pedro da Serra.

Native Hymenopteran Parasitoids Associated with Fruit Flies (Diptera: Tephritidae) in Santa Catarina State, Brazil

Abstract A survey of tephritid fruit fly species and their parasitoids was conducted in the western portion of Santa Catarina state, Brazil. A total of 9,197 fruits belonging to 46 plant species in 24 families was collected. The parasitoids recovered were Aganaspis pelleranoi (Brèthes), Lopheucoila anastrephae (Rhower) (Figitidae), Doryctobracon areolatus (Szèpligeti), Doryctobracon brasiliensis (Szèpligeti), Odontosema anastrephae Borgmeier, Opius bellus Gahan, Opius sp., Utetes (Bracanastrepha) anastrephae (Viereck) (Braconidae), and Trichopria anastrephae Lima (Diapriidae). Agasnaspis pelleranoi is the most frequent parasitoid species found in the west region of Santa Catarina. We recorded the first occurrence of L. anastrephae in Santa Catarina. Parasitism ranged from 1.2 to 46.9%.

Flutuação populacional de Anastrepha fraterculus (Wiedemann, 1830) (Diptera, Tephritidae) na Região Oeste de Santa Catarina, Brasil

Fruit flies are the major pests in fruit orchards and require a frequent insecticide aplication control, which increases production cost and chemical residues in fruits. Adults of Anastrepha fraterculus were sampled from twelve peach, plum, orange, tangerine and acid lime orchards in four counties in the Western Region of Santa Catarina. Modified McPhail plastic traps, baited with glucose 10%, were used to collect the flies from October 1998 to September 2000. Trap monitoring, bait replacement and fruit flies sorting by species and sex were done weekly. A total of 4,164 specimens of A. fraterculus was collected and highest population was registered in the county of Chapeco (64,8% of all sampled flies). Adults were collected all year long, with the highest population peaks occurring from December and January, although the fluctuation was different for each fruit species due to their particular phenology and in different years. Positive correlation among temperature, atmospheric humidity and population levels of adults of A. fraterculus was observed. According to the degree days obtained for each year, 4851.9, 4632.9 and 4983.7, respectively in 1998, 1999 and 2000, it was established that A. fraterculus could present an average of 11.2 generations a year.

Análise faunêstica de moscas-das-frutas (diptera, tephritidae) em pomares de pessegueiro em Porto Alegre, Rio Grande do Sul

In order to characterizc the peach trees ecosystem in Porto Alegre related to tephrilidea species, a faunal study was developed over the data of the collects of these insects with traps in tvvelve months. For the characterization of the communities, constancy, abundance and frequency index were determined. Relation between sex were obtained by correlation matrix, sexual proportion and sexual rates. Anastrepha fratercalus (Wiedemann, 1830) was abundant, constant and frequent, Ceratitis capitata (Wiedemann, 1824) was accessory and Anastrepha grandis (Macquart, 1845) accidental. A greatcr number of females than males was observed.

Noctuídeos (Lepidoptera, Noctuidae) coletados em quatro Áreas Estaduais de Conservação do Rio Grande do Sul, Brasil

The objective of this work was to analyze the composition of the Noctuidae communities at Reserva Biologica de Ibirapuita (Alegrete) and at Parque Estadual do Turvo (Derrubadas), Parque Estadual de Rondinha (Sarandi) and Parque Estadual do Espigao Alto (Barracao). Ten light traps were used to collect the insects from November/2000 to February/2001, sampling one night per area. The lepidopterous were identified at family and subfamily levels and, when it was possible, at genera and species levels. A total of 6,374 noctuids belonging to 249 taxa, distributed in 17 subfamilies were collected. The large number of species observed in all areas emphasize the importance of Conservation State Unity for the biodiversity maintenance.

Diversidade dos noctuídeos (Lepidoptera, Noctuidae) em Salvador do Sul, Rio Grande do Sul, Brasil

Diversity of owlet-moth (Lepidoptera, Noctuidae) in Salvador do Sul, Rio Grande do Sul, Brazil. The purpose of this paper is to describe the Noctuidae community in Salvador do Sul, Rio Grande do Sul. Light traps captured the insects of this research. The quantitative data were collected through weekly sampling, during one year (1994-1995); the qualitative data were collected through non-systematic sampling, during four consecutive years. The community characterization was based on the richness, abundance, specific constancy, diversity indices and abundance distribution; also total richness estimates were calculated, by nonparametric statistical procedures. In the systematized collecting there were captured 4017 noctuids of 108 species, distributed in 14 subfamilies; in the non-systematized, another 189 additional species and two subfamilies. Amphipyrinae, Hadeninae and Ophiderinae had the largest species richness. The more constant species were noctuids of great economic importance; the accessories were related to specific vegetable groups; the accidentals have their host unknown. The accessories and accidental species were captured more in spring and summer; also in these periods were measured the highest values of richness, abundance and diversity. There was no fit between observed/calculated log normal and log series distribution models. The 2nd order Jackknife and Michaelis-Menten equation procedures estimated that the total richness values were close to the total number of the species in the studied area.

Arctiinae (Lepidoptera, Arctiidae) coletados em unidades de conservação estaduais do Rio Grande do Sul, Brasil

Arctiinae (Lepidoptera, Arctiidae) coletados em unidades de conservacao estaduais do Rio Grande do Sul, Brasil. O presente estudo foi realizado com o objetivo de analisar a composicao das comunidades de Arctiinae no Parque Estadual do Espigao Alto (Barracao), Parque Estadual de Rondinha (Sarandi), Parque Estadual do Turvo (Derrubadas) e na Reserva Biologica de Ibirapuita (Alegrete). Dez armadilhas luminosas foram utilizadas para coletar os lepidopteros, de novembro de 2000 a fevereiro de 2001, amostrando-se uma noite em cada local. Os lepidopteros foram identificados aos niveis de subfamilia, tribo e, quando possivel genero e especie. Obteve-se um total de 5.969 arctiineos pertencentes a 137 morfo especies, distribuidos em seis tribos.

Aspectos Morfológicos de Lonomia obliqua Walker (Lepidoptera: Saturniidae)

Lonomia obliqua Walker (Lepidoptera, Saturniidae) has urticant spines in larval stages. This species may cause death as a result of haemorrhages caused by a toxin released from the caterpillars spines onto the skin of the victim when touched. In order to determine the morphological features of this species, studies were performed at the Laboratory of Entomology of the Pontificia Universidade Catolica do Rio Grande do Sul. The morphological aspects of eggs, larvae, pupae and adults are discussed as well as illustrated with pictures and drawings. The eggs are light green, 1.98 mm mean height, 1.45 mm large and 1.61 mm long. From the first to the sixth larval instar, the insect has spines on the body with different sizes and they are green-brownish with strong and dark heads. The mean sizes are 5.19 mm long at the first larval instar and 53.49 mm at the sixth instar. The head capsules are 1.01 mm and 4.83 mm wide at the first and sixth instars respectively. The mean lengths of the pupae are 28.73 mm for males and 30.23 mm for females. Adults have sexual dimorphism in which the male is smaller and yellow and the female is larger and grey-brownish. The mean adult wing span is 60.47 mm in males and 80.33 mm in females.