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The Oryctini (Coleoptera: Scarabaeidae: Dynastinae) is a large tribe of worldwide distribution with approximately 26 genera and 230 species. Fourteen genera and 113 species are found in the Neotropical region. Knowledge of the tribe in the Neotropics is fragmentary, necessitating further studies that address taxonomy, biology, and geographical distribution patterns. This study surveyed the Oryctini of the Brazilian Amazon. The composition of the group in the study area consisted of 7 genera, 18 species and 2 subspecies found in 7 states, 91 municipal districts, and approximately 167 specific localities. States with larger number of species are Amazonas and Pará, with 17 and 13 species respectively. Heterogomphus eteocles Burmeister, Heterogomphus aidoneus (Perty), Heterogomphus telamon Burmeister, Megaceras crassum Prell, and Megaceras laevipenne Prell are reported for the first time from the study area. Megaceras laevipenne is reported for the first time from Brazil. The taxonomy, descriptions, distribution maps, and biological and ecological data are provided for all species. A character analysis is provided as well as an identification key for all oryctine species that occur in the Brazilian Amazon.
The Oryctini (Coleoptera: Scarabaeidae) are dynastine scarab beetles with a worldwide distribution consisting of 26 genera and about 230 species, of which 14 genera and 135 species are distributed in the Neotropical region. The species of this tribe occur in habitats ranging from temperate and tropical dry forests to rain forests and cloud forests from sea level to 2600 m in elevation. Some species feed on organic matter or decaying fruits while others bore into the stems of living plants, in which case they occasionally reach pest status. Knowledge of the tribe in the Neotropics is still fragmentary, necessitating further studies that address taxonomy, phylogeny, and geographical distribution patterns of the species. This study surveyed the Oryctini of Colombia. In Colombia there are 7 genera and 32 species, found in 29 departments, 330 municipal districts and approximately 628 specific localities. Heterogomphus curvicornis Prell, Megaceras jason (Fabricius), and Podischnus oberthueri Sternberg are reported for the first time from Colombia. Taxonomic descriptions and distribution maps are provided for all species. An identification key, in Spanish and English, is provided for all oryctine species that occur in Colombia. A checklist of the oryctine beetles of the Colombia is provided.
An unusual eye malformation observed in Trichiotinus rufobrunneus (Casey) (Coleoptera: Scarabaeidae: Cetoniinae: Trichiini), is described and illustrated. The functionality of the ectopic compound eye is discussed. According to label data, larval association with oak rotten log habitats is reported.
Dyslexia Skelley and Gasca-Álvarez, new genus (Coleoptera: Erotylidae: Erotylinae: Erotylini), is described and illustrated. The genus is comprised of four new species, all described by Skelley and Gasca-Álvarez: D. belamyi, D. dathomirria, D. pulcricolor, and D. tomasi. The unique broad head structures of this genus are characterized and compared with other genera. Problems associated with the taxonomy of Erotylini are discussed.
