Alberto Dorval

First record of Sinoxylon conigerum Gerstäcker (Coleoptera: Bostrichidae) in Brazil

This is the first register of Sinoxylon conigerum attacking timber of teak (Tectona grandis L.f.), mango tree (Mangifera indica L.) and (Astronium fraxinifolium Schott) in the municipalities of Cuiabá and Várzea Grande, State of Mato Grosso, Brazil.

Occurrence of the teak defoliator Hyblaea puera (Cramer, 1777) (Lepidoptera: Hyblaeidae) in teak (Tectona grandis L.f.) in Brazil

The occurrence of the Hyblaea puera (Cramer, 1777) in homogeneous plantations of teak, Tectona grandis L.f., in Brazil, is reported here. Infestations of this pest were observed in the districts of Caceres and Rosario Oeste, State of Mato Grosso, Brazil. The occurrence of this moth is also registered in other Brazilian areas such as: Chapada dos Guimaraes and Nobres (State of Mato Grosso), Jatai (State of Goias), Dourados (State of Mato Grosso do Sul) and Rio de Janeiro (State of Rio de Janeiro).

Distribuição Sazonal de Heterotermes Tenuis (Hagen) em Povoamentos de Eucalyptus spp.

This work aimed to study the sazonal distribution of Heterotermes tenuis (Hagen) using cellulosic traps installed at the soil level; 1,64 ft; 3,28 ft and 4,92 ft of depths. Sampling occurred every two weeks for a period of 12 months in Cuiaba-MT in Eucalyptus spp plantations. Data were analyzed using the Inflated Poisson Zeros (PIZ) statistical model. In total 266,918 individuals were collected, and the higher average was in traps at 3,28 ft depth. The analysis of sampled sites revealed MG1277 clone and the specie Eucalyptus camaldulensis with the highest and lowest amount of termites collected in traps, respectively. The increased number of individuals is related to the rainfall factor, but a greater number of individuals during the dry season was recorded due to the favorable conditions offered within the cellulosic traps such as food, temperature and humidity.

Formigas (Hymenoptera: Formicidae) Bioindicadoras de Degradação Ambiental em Poxoréu, Mato Grosso, Brasil

This work aimed to evaluate the ant species occurring in an area degraded by diamond mining, defining the bioindicators of this degradation. The present study was conducted bimonthly in the municipality of Poxoreu, Mato Grosso state, between June 2010 and April 2011. Four environments were sampled: A1 - area degraded by mining, A2 - area of Cerrado vegetation with recent anthropic activities, A3 - area of Cerrado disturbed approximately 30 years ago, and A4 - area of preserved Cerrado. In each environment, 11 pitfall traps, equidistant 15 meters, were installed to collect ants for 24 hours. The individuals were taken to the Laboratory of Forest Protection/FENF/UFMT and screened for later identification. The bioindicator species were indicated by faunal analysis. The ant species Camponotus (Myrmaphaenus) sp.1 and Forelius brasiliensis can be considered bioindicators of environmental degradation in the areas of ​diamond ​mining and human disturbance, while the species Camponotus atriceps, Pachycondyla crassinoda and Paraponera clavata can be considered bioindicators in the preserved Cerrado area.