Larval morphology of the Sepsidae (Diptera, Sciomyzoidea), with a cladistic analysis using adult and larval characters. Bulletin of the AMNH ; no. 228

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dc.contributor.author Meier, Rudolf, 1963- en_US
dc.date.accessioned 2005-11-22T22:51:45Z
dc.date.available 2005-11-22T22:51:45Z
dc.date.issued 1996 en_US
dc.identifier.uri http://hdl.handle.net/2246/1668
dc.description 147 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 142-147). en_US
dc.description.abstract "A phylogenetic hypothesis based on larval and adult characters is proposed for the Sepsidae. The cladistic analysis employed 85 characters and 57 taxa and found 16 equally parsimonious cladograms. The strict consensus tree and a preferred tree are presented, the region of the tree in which the parsimonious cladograms differ is indicated, and the competing arrangements of taxa are shown. Outgroup representatives included two species of ropalomerids (Ropalomera sp., Willistoniella pleuropunctata), two species of coelopids (Coelopa frigida, Chaetocoelopa sydneyensis), and one species of dryomyzid (Neuroctena caucasica). Based on larval characters, the Coelopidae are the sister group of the Sepsidae. Based on both the adult and the combined data sets, the Ropalomeridae, which are generally regarded as the sister group of the Sepsidae, are confirmed as their closest living relatives. Two new morphological autapormorphies related to the posterior spiracles are described for the Sepsidae. The following phylogenetic hypothesis is proposed based on the combined data set: (Orygma (Ortalischema (Paratoxopoda (Themira (Decachaetophora ((Saltella Susanomira) (Nemopoda (Lasionemopoda ((Meroplius Xenosepsis) (Palaeosepsis (Palaeosepsis (Parapalaeosepsis (Dicranosepsis (Sepsis (Australosepsis Sepsis)). The genus Xenosepsis is synonymized with Meroplius (syn. nov.), and the genus Australosepsis with Sepsis. The history of sepsid classification is briefly discussed, and the most influential systems are compared with the results of the cladistic analysis. The phylogenetic relationships of the genera for which the larvae are unknown are inferred from adult characters. Larvae for the following genera are described based on a comprehensive scanning electron microscopical study: Australosepsis (1 sp.), Decachaetophora (1 sp.), Dicranosepsis (1 sp.), Lasionemopoda (1 sp.), Meroplius (2 spp.), Nemopoda (3 spp.), Ortalischema (1 sp.), Orygma (1 sp.), Palaeosepsis (4 spp.), Parapalaeosepsis (2 spp.), Paratoxopoda (1 sp.), Saltella (3 spp.), Sepsis (20 spp.), Susanomira (1 sp.), Themira (10 spp.), and Xenosepsis. Except for two species of Nemopoda for which the cephalic region could not be studied, drawings of the following structures are supplied: cephalic region (ventral and lateral), maxillary palp, anterior spiracle, ventral creeping welt, last segment (ventral, lateral, and dorsal), and spiracular plate of the posterior spiracle. Keys are presented that allow the identification of all genera and most species within the genera. However, the morphological differences between some species within Sepsis and Themira are so subtle that species identifications are difficult or even impossible. The literature on larval morphology, biology, and distribution of the species is briefly summarized"--P. 3. en_US
dc.format.extent 27838044 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher [New York] : American Museum of Natural History en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; no. 228 en_US
dc.subject.lcc QH1 .A4 no.228, 1996 en_US
dc.subject.lcsh Sepsidae -- Larvae -- Morphology. en_US
dc.subject.lcsh Sepsidae -- Phylogeny. en_US
dc.subject.lcsh Sepsidae -- Classification. en_US
dc.subject.lcsh Insects -- Larvae. en_US
dc.title Larval morphology of the Sepsidae (Diptera, Sciomyzoidea), with a cladistic analysis using adult and larval characters. Bulletin of the AMNH ; no. 228 en_US
dc.title.alternative Larval morphology of Sepsidae en_US
dc.type text en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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