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Issue: Vol. 2633 No. 1: 1 Oct. 2010
Type: Articles
Published: 2010-10-01
DOI: 10.11646/zootaxa.2633.1.1
Page range: 1–66
Abstract views: 35
PDF downloaded: 2

The nematode genus Fergusobia (Nematoda: Neotylenchidae): molecular phylogeny, descriptions of clades and associated galls, host plants and Fergusonina fly larvae

Australian Centre for Evolutionary Biology and Biodiversity, and School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen Osmond, South Australia 5064, Australia
North Carolina Department of Agriculture and Consumer Services, 1040 Mail Service Centre, Raleigh NC 27699-1040, USA
Fort Lauderdale Research and Education Center, University of Florida, 3205 College Ave, Davie, Florida 33314-7799, USA
Australian Centre for Evolutionary Biology and Biodiversity, and School of Earth and Environmental Sciences, The University of Adelaide, North Terrace, Adelaide, South Australia 5005, Australia
USDA Agricultural Research Service, Systematic Entomology Laboratory, 10300 Baltimore Ave, Beltsville, MD 20705
Hubbard Center for Genome Studies, University of New Hampshire, Durham NH 03824, USA
Nematoda Flies galls Myrtaceae phylogeny taxonomy clades dorsal shields morphology key diagnosis

Abstract

Collection data and biological information is presented on the genus Fergusobia (Nematoda: Neotylenchidae) from Australasia, India and The Philippines, an emended diagnosis of the genus is presented, and its putative phylogeny is discussed based on molecular and morphological evidence. About 20 clades have been found, and are outlined, including information on nematode and fly morphology; plant host species and distribution. Fly morphology, particularly the structure of the dorsal shield of third stage larvae, is congruent with the clades of nematodes, suggesting coevolution. However, little evidence of coevolution between the fly/nematode association and their host plants is apparent: host-switching appears to have been common, although host-specificity is stringent among most clades. A key to the species and morphospecies of nematodes collected from Corymbia, Angophora, Metrosideros, Syzygium, narrow-leaved Melaleuca, and Eucalyptus is presented.

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