Banca de DEFESA: ALINE DE OLIVEIRA LIRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : ALINE DE OLIVEIRA LIRA
DATE: 29/05/2024
TIME: 10:00
LOCAL: Plataforma online do Google Meet
TITLE:

NEOTROPICAL DIVERSITY AND GLOBAL PHYLOGENOMICS OF FLOWER WEEVILS OF THE TRIBE EUGNOMINI (COLEOPTERA, CURCULIONIDAE, CURCULIONINAE)

KEY WORDS:

Anchored Hybrid Enrichment, Curculionoidea, evolution, flower visitors, natural history, taxonomy

PAGES: 233
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Taxonomia dos Grupos Recentes
SUMMARY:

The tribe Eugnomini comprises weevil flower visitors, some acting as pollinators of their host plants. The tribe has a Gondwanan distribution and the highest known diversity in Australasia and Pacific islands, while four genera occur in the Neotropics, including the genus Udeus, which has a specialized relationship with its host plant Cecropia.  Despite their ecological significance, there has been a notable absence of a comprehensive phylogenetic framework that allows an understanding of their evolutionary history and establishes a reliable classification. This study addresses this gap by presenting the first species-level phylogeny of a higher weevil taxon utilizing an extensive sampling of the global diversity of Eugnomini, employing Anchored Hybrid Enrichment to assess the monophyly of the tribe and elucidate its biogeographic history. In addition to the phylogenomic approach, we explore the Neotropical diversity of Eugnomini through the taxonomic revision of Udeus, investigating the intimate relationship of this genus with its host plants. Our phylogenomic analyses robustly supported the monophyly of the subtribe Meriphina while revealing the paraphyly of Eugnomina and the polyphyly of the tribe as currently defined, indicating a need for reassessment. Moreover, our broad taxonomic sampling facilitates the delineation of monophyletic genera and prompts a reevaluation of tribal diagnosis based on morphological traits in light of our phylogenetic findings. By delving into the internal relationships of Eugnomini, we briefly explored its biogeography, suggesting scenarios of both vicariance and dispersal to explain the current diversity and distribution of the tribe. The revision of Udeus allowed the taxonomic reassessment of valid species, establishing new synonymies and descriptions of 22 new species. We found that eugnomines are not only much more diverse than previously considered but also widely distributed throughout the entire Neotropical region.

 

COMMITTEE MEMBERS:
Presidente - PASCHOAL COELHO GROSSI
Externa à Instituição - ROBERTA DE MELO VALENTE - UFPA
Externa à Instituição - GABRIELA PROCÓPIO CAMACHO - USP
Externo à Instituição - VINICIUS S. FERREIRA
Externo à Instituição - BRUNO CLARKSON MATTOS - UENF