Natural history and biology of Chlamisus minax Lacordaire (Chrysomelidae: Chlamisinae)

Abstract

Neotropical Entomology 34(3): 357-362 (2005) Biologia e História Natural de Chlaminus minax Lacordaire (Chrysomelidae: Chlamisinae) RESUMO -Embora muito abundantes nos Neotrópicos, pouco se sabe sobre a biologia, ecologia e história natural dos besouros Chlamisinae brasileiros. No presente estudo investigamos diretamente no Cerrado aspectos da história natural e biologia de Chlamisus minax Lacordaire. Os resultados mostram que a espécie tem ciclo anual, com adultos presentes no campo durante a primavera e o verão, quando ocorre a reprodução. As fêmeas cobrem seus ovos com um "manto", mais tarde as larvas adicionam a casca do ovo e fezes ao manto para a confecção de uma capa cônica, que recobre a larva protegendo-a de seus inimigos naturais. Os seis morfo-estágios larvais são herbívoros, alimentando-se de botões florais de Heteropterys pteropetala A. Juss. (Malpighiaceae). As larvas empupam nas plantas hospedeiras e suas pupas caem no solo permanecendo em diapausa de abril a outubro. Este é o primeiro estudo a investigar a biologia e história natural de um Chlamisinae brasileiro diretamente no campo. PALAVRAS-CHAVE: Besouro, Cerrado, comportamento, herbivoria ABSTRACT -Although very abundant in the Neotropics, there is little information about the biology, ecology and natural history of Brazilian Chlamisinae beetles. In the present study we investigated directly in the Cerrado vegetation the aspects of natural history and biology of Chlamisus minax Lacordaire. The results showed that the species has annual cycle and the adults are present in the field during the spring and summer when the reproduction occurs. The females cover their eggs with a mantle, and later on the rests of the egg and faeces are added by the larva to the mantle to produce a protective case. The six larval morpho-stages are herbivorous and feed on floral buds of Heteropterys pteropetala A. Juss. (Malpighiaceae). The larvae pupate in the host plants and after that they fall on the ground remaining in diapause between April and October. This is the first study to investigate the biology and natural history of a Brazilian Chlamisinae beetle directly in the field.

Sexual size dimorphism, mating system and seasonality of a Neotropical damselfly,Telebasis carmesina(Coenagrionidae)

“…Data on longevity, size and abundance were collected only from July 2008 through to June 2009; to keep temporal continuity through the study, we divided the latter period into four intervals of 3 months, beginning in July 2008. Our study site typically experiences a wet season from October to March and a dry season from April to September (Table 1; see Réu & Del-Claro, 2005;Arruda et al, 2006, for more details of the area).…”

Spider–Plant Interaction: The Role of Extrafloral Nectaries in Spider Attraction and Their Influence on Plant Herbivory and Reproduction

“…The plant species studied, Heteropterys pteropetala, is a shrub approximately 2 m tall, with two extrafloral nectaries (EFNs) at the base of each leaf (Figure 4a), at the base of the pedicel of the flower buds, and on the bracts of the inflorescences [40]. The inflorescences are terminal panicles with pink flowers (Figure 4b) and are zygomorphic, with five petals and five sepals, and, at the base of each sepal, there are two elaiophores (oil glands), totalling between eight and ten glands per flower [41].…”

Ineficácia das formigas na proteção de duas plantas mirmecófilas simpátricas contra besouros endofíticos

“…Nos últimos 30 anos, uma série de estudos com espécies distintas de Malpighiaceae do Cerrado mostrou de interações benéficas mútuas entre plantas e formigas (Del‐Claro et al, 1997; Del‐Claro & Marquis, 2015; Fagundes et al, 2017; Pereira et al, 2020; Stefani et al, 2015; Vilela et al, 2014, 2018) para resultados neutros ou negativos (Alves‐Silva et al, 2014; Alves‐Silva & Del‐Claro, 2016; Assunção et al, 2014). Os besouros são herbívoros comuns nas inflorescências destas plantas (Reu & Del‐Claro, 2005), os adultos dos besouros do gênero Anthonomus têm corpo duro, enquanto as larvas endofíticas são protegidas dentro dos botões florais (Alves‐Silva et al, 2014; Torezan‐Silingardi, 2011), indicando que as formigas não são eficientes contra o impacto destes besouros (Alves‐Silva et al, 2013). Estes estudos são focados principalmente no comportamento das formigas e em sua eficiência na busca e predação de herbívoros endofíticos em plantas portadoras de NEFs (Alves‐Silva et al, 2013; Alves‐Silva & Del‐Claro, 2016; Torezan‐Silingardi, 2011).…”