78 research outputs found

    Changes to the Fossil Record of Insects through Fifteen Years of Discovery

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    The first and last occurrences of hexapod families in the fossil record are compiled from publications up to end-2009. The major features of these data are compared with those of previous datasets (1993 and 1994). About a third of families (>400) are new to the fossil record since 1994, over half of the earlier, existing families have experienced changes in their known stratigraphic range and only about ten percent have unchanged ranges. Despite these significant additions to knowledge, the broad pattern of described richness through time remains similar, with described richness increasing steadily through geological history and a shift in dominant taxa, from Palaeoptera and Polyneoptera to Paraneoptera and Holometabola, after the Palaeozoic. However, after detrending, described richness is not well correlated with the earlier datasets, indicating significant changes in shorter-term patterns. There is reduced Palaeozoic richness, peaking at a different time, and a less pronounced Permian decline. A pronounced Triassic peak and decline is shown, and the plateau from the mid Early Cretaceous to the end of the period remains, albeit at substantially higher richness compared to earlier datasets. Origination and extinction rates are broadly similar to before, with a broad decline in both through time but episodic peaks, including end-Permian turnover. Origination more consistently exceeds extinction compared to previous datasets and exceptions are mainly in the Palaeozoic. These changes suggest that some inferences about causal mechanisms in insect macroevolution are likely to differ as well

    \u27Leptocera lutosa\u27: A complex of Nearctic species (Diptera, Sphaeroceratidae)

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    Volume: 51Start Page: 1End Page: 2

    Winthemia citheroniae, new species, with notes on the correct name of W. cecropia (Diptera, Larvaevoridae)

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    Volume: 50Start Page: 63End Page: 6

    Case 2654 Rapport Sur Les Myodaires Du Docteur Robineau Desvoidy 1826 Proposed Nomenclatural Suppression

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    Volume: 45Start Page: 283End Page: 28

    A new species of the Leptocera lutosa complex (Diptera: Sphaeroceridae)

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    Volume: 67Start Page: 74End Page: 7

    Request for a declaration against the suppression of nomina dubia. Z.N. (S) 1715

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    Volume: 22Start Page: 265End Page: 26

    Asiatic species of the genus Stenomicra (Diptera: Anthomyzidae)

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    Volume: 17Start Page: 209End Page: 21

    (1.) Comment On The Type Species Of Anolis Daudin, 1802

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    Volume: 40Start Page: 15End Page: 1

    Article 50 and questions of authorship. Z.N.(S.) 1925

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    Volume: 31Start Page: 206End Page: 20

    Two additional species of Notaulacella enderlein (Diptera: Chloropidae) from Panama

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    Volume: 98Start Page: 471End Page: 47
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