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          Institute: MPI für Evolutionsbiologie     Collection: Tropical ecology     Display Documents

ID: 322633.0, MPI für Evolutionsbiologie / Tropical ecology
Molecular phylogeny of Megacephalina Horn, 1910 tiger beetles (Coleoptera: Cicindelidae)
Authors:Zerm, Matthias; Wiesner, Jürgen; Ledezma, Julieta; Brzoska, Dave; Drechsel, Ulf; Cicchino, Armando C.; Rodríguez, Jon Paul; Martinsen, Lene; Adis, Joachim; Bachmann, Lutz
Date of Publication (YYYY-MM-DD):2007-12
Title of Journal:Studies on Neotropical Fauna and Environment
Issue / Number:3
Start Page:211
End Page:219
Review Status:not specified
Audience:Not Specified
Abstract / Description:The pantropical subtribe Megacephalina represented by more than 100 species is the most diverse of the basal cicindelid groups. Today, most taxonomists recognize eight genera within the subtribe. This is in contrast to Horn who, back in 1910, conceded only two genus-level taxa: the monospecific Aniara and Megacephala sensu Horn (a genus which united the seven other taxa). In the present study we provide a molecular phylogeny of Megacephalina based on the nuclear 18S and the mitochondrial 16S and cytochrome oxidase III genes. The dataset includes 60 specimens of more than 40 mostly South American and Australian taxa. Three cicindelid species of derived lineages were used as outgroups. The resulting phylogenetic trees are basically in agreement with the current classification system. Megacephala and Grammognatha are placed basal in the dendrogram. Pseudotetracha and Australicapitona form a monophyletic Australian clade. Phaeoxantha, Tetracha and Aniara also form a monophyletic group. The position of Metriocheila remains uncertain. The most striking deviation from the traditional classification is the well-supported placement of Aniara within Tetracha, rendering the latter a paraphyletic taxon. Several monophyletic subgeneric species groups are observed in Pseudotetracha, Phaeoxantha and Tetracha/Aniara. Within the latter the monophyletic sobrina, carolina and brasiliensis clades together represent a monophyletic group. Additionally, habitat types were assigned to the taxa and mapped on the phylogenetic tree. The basal African species inhabit non-flooded uplands. The Australian species moved to inland and/or coastal salt plains. The American groups were most likely first confined to river margins and then colonized secondarily and independently non-flooded uplands and/or coastal habitats.
Free Keywords:Aniara; Australia; cicindelid; habitat; Megacephala; monophyletic group; phylogenetic tree; South America
External Publication Status:published
Document Type:Article
Communicated by:Brigitte Lechner
Affiliations:MPI für Limnologie/AG Tropenökologie
External Affiliations:Wolfsburg, Germany; Dep. Entomologia, Museo Noel Kempff Mercado, Santa Cruz, Bolívia; Naples, Florida, USA; Asunción, Paraguay; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina; Centro de Ecología, Instituto Venezolano de Investigaciones Científicas, Venezuela; Natural History Museum, Department of Zoology, University of Oslo, Oslo, Norway
Identifiers:ISSN:0165-0521 (paper) [ID-No:1]
ISSN:1744-5140 (electronic) [ID-No:2]
DOI:10.1080/01650520701409235 [ID-No:3]
LOCALID:2574/S 38728 [Listen-Nummer/S-Nummer]
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