International Union for the Study of Social Insects (IUSSI2018), August 5-10, 2018 in Guarujá, Brazil.

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A clasistic analysis of Neotropical swarm-founding wasps based on total evidence (Hymenoptera: (Vespidae: Epiponini)

Author(s):
Fernando Barbosa Noll, Fernando B. Noll , Yuri C. Grandinete , ​Rogerio B. Lopes , Marjorie da Silva , ​Raduan A. Soleman , Eduardo A. B. Almeida
Institution(s):
Late; Departamento de Zoologia e Botânica, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São José do Rio Preto, SP, Brazil. ; Departamento de Zoologia e Botânica, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São José do Rio Preto, SP, Brazil. ; Departamento de Zoologia e Botânica, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São José do Rio Preto, SP, Brazil. ; Departamento de Zoologia e Botânica, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São José do Rio Preto, SP, Brazil. ; Departamento de Zoologia e Botânica, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São José do Rio Preto, SP, Brazil. ; Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil.
The swarm-founding social wasps are divided into 19 genera in the tribe Epiponini (Vespidae, Polistinae). They are common across the Neotropics, and display extensive variation in a number of colony-level traits that make them an attractive model system for reconstructing the evolution of social phenotypes, including caste dimorphism and nest architecture.  Castes in these wasps can be catalogued into 5 different syndromes and present a phylogenetic pattern. Three main nest architectural types have been described within the tribe. Stelocyttarous nests have a petiole from which a single comb hangs; secondary combs, when present, are each connected to the previous comb by a petiole. Stelocyttarous nests can be open (gymnodomous) or enclosed by an envelope (calyptodomous). Astelocyttarous nests lack a petiole; the comb cells are constructed directly on a flat surface with an envelope covering the single comb. Phragmocyttarous nests also lack a petiole, but subsequent combs are added to the underside of the previous envelope. Inferences regarding the evolution of caste, nest architecture and other behaviors can be drawn only on the basis of phylogenetic information.  Phylogenetic inferences among genera of Polistinae were performed based on morphology or both molecular data (microsatellites and cytochrome oxidase I) and morphology. Epiponini has been held as a solid monophyletic group in most phylogenetic analyses carried so far, supported by molecular, morphological and behavioral data. However, the relationships among  the genera are debatable. We will present the resulting tree of our data combining nest architecture, adult morphology, and molecular data, which represent the most extensive study in terms of taxon sampling and number of characters. Based on this phylogenetic hypothesis, we will present discussions regarding the origin of evolution of certain behavioral traits.Financial support: FAPESP (2011/06058-5; 2018/13267-9)
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