Figueroa Castro, Dulce MaríaCano Santana, Zenón2023-04-182023-04-182004-04-01https://hdl.handle.net/20.500.12371/18226"In this research,we determined the insect guilds visiting the ßower heads of Þve Asteraceae species (Eupatorium petiolare Mocin˜ o ex De Candolle, Senecio praecox De Candolle, Dahlia coccinea Cavanilles, Tagetes lunulata Ortega,and Verbesina virgata); the role of ßoral phenology and morphology on species composition and frequency of visits of different insect order; and the diurnal schedules of anthophilous visitors and their relationship to temperature and relative humidity. Collections and observations of ßoral visitors for each species were made over 24 h per day. The Þve Asteraceae were visited by 137 Diptera,Hymenoptera, Coleoptera,and Lepidoptera species. Tagetes lunulata had the highest species richness of ßoral visitors, while V. virgata had the lowest . Apis mellifera L. was the only visitor found visiting all Þve species. Species composition of insect visitors was closely related to plant phenology. Order-level frequency of visits was closely related to ßoral morphology. Two separate principal component analyses based on frequency of visits and ßoral morphology showed similar plant species groupings. Two groups of insects and two ßoral traits, respectively, were the variables determining these groupings. The combination of diurnal activity and guild visitor analyses in this study showed the importance of including both characteristics in pollination studies".engAsteraceaeFloral visitorsSimilarity indexesTemporal variationXeric communityArtículoopenAccess