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      Two new species of Pambolus (Hymenoptera, Braconidae) from Jamaica

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      Journal of Hymenoptera Research

      Pensoft Publishers

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          Abstract

          Pambolus albospina sp. n. and Pambolus rastafari sp. n. are described from Jamaica. Pambolus rastafari can be distinguished from all other Neotropical species of the genus by its antennal color pattern and the smooth sculpture of the head and mesoscutum. Pambolus albospina is morphologically close to P. hemitaeniatus van Achterberg, from which it can be distinguished by the number of white antennal segments and the sculpture on the first metasomal tergite. These two new species constitute the first records of the genus for the Caribbean Islands.

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          Systematics of the cyclostome subfamilies of braconid parasitic wasps (Hymenoptera: Ichneumonoidea): a simultaneous molecular and morphological Bayesian approach.

          Phylogenetic relationships among 95 genera collectively representing 17 of the 18 currently recognized cyclostome braconid wasp subfamilies were investigated based on DNA sequence fragments of the mitochondrial COI and the nuclear 28S rDNA genes, in addition to morphological data. The treatment of sequence length variation of the 28S partition was explored by either excluding ambiguously aligned regions and indel information (28SN) or recoding them (28SA) using the 'fragment-level' alignment method with a modified coding approach. Bayesian MCMC analyses were performed for the separate and combined data sets and a maximum parsimony analysis was also carried out for the simultaneous molecular and morphological data sets. There was a significant incongruence between the two genes and between 28S and morphology, but not for morphology and COI. Different analyses with the 28SA data matrix resulted in topologies that were generally similar to the ones from the 28SN matrix; however, the former topologies recovered a higher number of significantly supported clades and had a higher mean Bayesian posterior probability, thus supporting the inclusion of information from ambiguously aligned regions and indel events in phylogenetic analyses where possible. Based on the significantly supported clades obtained from the simultaneous molecular and morphological analyses, we propose that a total of 17 subfamilies should be recognized within the cyclostome group. The subfamilial placements of several problematic cyclostome genera were also established.
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            Author and article information

            Journal
            Journal of Hymenoptera Research
            JHR
            Pensoft Publishers
            1314-2607
            1070-9428
            January 10 2012
            January 10 2012
            : 24
            : 85-93
            Article
            10.3897/jhr.24.2300
            © 2012
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