Resumen El 7 de mayo de 2018, en el jardín de un sitio arqueológico en el norte de Campeche, México, se observó una planta de Cycas revoluta con aproximadamente el 40 % del follaje dañado por un enjambre de Aulacoscelis melanocera (Coleoptera: Orsodacnidae). El presente trabajo constituye el primer registro de esta especie ocasionando daño severo en C. revoluta y su primer registro para el estado de Campeche.

Abstract On May 7, 2018, in the garden of an archaeological site in northern Campeche, Mexico, a Cycas revoluta plant was observed with approximately 40 % of the foliage damaged by a swarm of Aulacoscelis melanocera (Coleoptera: Orsodacnidae). The present work constitutes the first report of this species causing severe damage in C. revoluta and the first record of this insect for the state of Campeche.

ABSTRACTChemical investigation of Cycas vespertilio A. Lindstr. & K.D. Hill, Cycadaceae, a plant endemic to the Philippines, yielded pinoresinol (1), sesamin (2), paulownin (3), a mixture of β-sitosterol and stigmasterol, and triacylglycerols from the cone base; 1, 3, β-sitosterol, stigmasterol, triacylglycerols, and lariciresinol (4) from the cataphylls; β-sitosterol from the megasporophyll lamina; β-sitosterol and a mixture of trans-4-hydroxycinnamate fatty acid esters (5) and cis-4-hydroxycinnamate fatty acid esters (6) from the unripe sarcotesta; and β-sitosterol and triacylglycerols from the ripe sarcotesta. The structures 1–6 were elucidated by extensive 1D and 2D NMR spectroscopy.