Compartir
Título
A new Aphid genus and species (Hemiptera: Aphididae: Macrosiphini) living on ferns in Costa Rica and Mexico
Autor
Facultad/Centro
Área de conocimiento
Cita Bibliográfica
Canada Entomologist, 2013,vol. 145,n. 5
Editorial
Entomological society of Canada
Fecha
2013-10-20
Resumen
Aphid species colonising ferns belong to the subfamily Aphidinae (Hemiptera:
Aphididae) and the majority of these to the tribe Macrosiphini. A new genus in this tribe and its type
species: Gibbomyzus pteridophytorum new genus, new species, are established. Apterous and alate
viviparous females are described from specimens collected on Blechnum buchtienii Rosenstock
(Blechnaceae) in Costa Rica and on Pteridium aquilinum (Linnaeus) Kuhn (Dennstaedtiaceae) and an
unidentified fern in Mexico. The taxonomic validity of the two new taxa is discussed based on
morphological and molecular data. Morphologically, the new genus is compared with genera with
swollen siphunculi recorded in the New World, and also with genera living on ferns anywhere in the
world. The identification key by Blackman and Eastop to aphids living on ferns is modified. Molecular
analyses were carried out on the sequences of a fragment of the mitochondrial gene encoding for
cytochrome c oxidase subunit 1 and of a fragment of the nuclear gene encoding elongation factor-1
alpha. In both analyses, G. pteridophytorum new species sequences showed considerable divergence
(,4% or more) from those of 23 other species from diverse genera of Macrosiphini, supporting the
conclusions of the morphological study and justifying the establishment of the new genus
Materia
Palabras clave
Peer review
SI
URI
Aparece en las colecciones
- Artículos [4599]