Baronia brevicornis, Short-horned Baronia

Periodo de realización: 0001/01/01 al 2018/01/01

Tipo: Capítulo de libro

Lugar(es) de estudio: México
Resumen: "This relict species is known as probably the oldest extant butterfly linage, commonly referred to as a “Living Fossil” (Collins and Morris 1985), estimated to have evolved between 65 and 75 million years ago (Covarrubias-Camarillo et al. 2016). The subfamily Baroniinae contains only this species, and on the basis of morphology, it has been suggested to be the sister lineage to all other Papilionidae (Léon-Cortés et al. 2004). While the position of Baronia as the basal lineage within the Papilionidae family seemed assured (Munroe 1961, Hancock 1983), comprehensive morphological analysis of butterfly phylogeny by De Jong et al. (1996) has suggested that Parnassius might instead occupy this position. Baronia does, however, resemble one of the oldest known fossil butterflies, Praepapilio colorado, which occurred during the Eocene, some 48 million years ago (Durden and Rose 1978). The resemblance offers no evidence of its phylogenetic placement (Caterino et al. 2001), yet the phylogenetic position of this species has important implications for understanding butterfly evolution, such as whether the use of a leguminous host represents the "original" butterfly condition (Scott 1986).Due to the geographical isolation between the main populations and the Chiapas population, it had been suggested that there are two subspecies: the nominal B. brevicornis (Vázquez and Pérez-Ruiz 1961) and B. brevicornis rufodiscalis within Chiapas, Mexcio (De la Maza et al. 1987, Machkour-M’Rabet et al. 2014)."

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