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Wolfram Graf - One of the best experts on this subject based on the ideXlab platform.

  • the larva of chaetopteryx rugulosa kolenati 1848 trichoptera Limnephilidae with notes on ecology and zoogeography
    Zootaxa, 2020
    Co-Authors: Oliver Zweidick, Wolfram Graf, Johann Waringer
    Abstract:

    This paper gives a description of the hitherto unknown larva of Chaetopteryx rugulosa Kolenati 1848 (Trichoptera: Limnephilidae). Information on the morphology of the larva is given, and the most important diagnostic features are figured. In the context of the known European Chaetopterygini and Stenophylacini species, the larva of C. rugulosa can be separated from morphologically close species by metanotal sclerite morphology, setation, the extension of the lateral fringe, and by case morphology.

  • Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae)... 79 Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans
    2016
    Co-Authors: Simon Vitecek, Mladen Kučinić, Ana Previšić, János Oláh, Miklós Bálint, Lujza Keresztes, Johann Waringer, Steffen U. Pauls, Wolfram Graf
    Abstract:

    Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans. ZooKey

  • a new species of Limnephilidae insecta trichoptera from the western alps insecta trichoptera
    Zootaxa, 2016
    Co-Authors: Wolfram Graf, Simon Vitecek
    Abstract:

    A new species of the alpine caddisfly genus Consorophylax (Trichoptera, Limnephilidae, Stenophylacini) and the female of the recently described C. vinconi Graf & Malicky 2015 are described. The new species C. lepontiorum sp. nov. is a microendemic of the Southwestern Alps and differs from its congeners in the shape of the superior and inferior appendages and the unique setation of the aedeagus, absent in all other Consorophylax species. The female of C. vinconi is characterized by the unique formation of the anal tube. Potential effects of alpine orogenesis, phenology and climatic oscillation on speciation of aquatic insects inhabiting high-altitude habitats are discussed. The description of C. lepontiorum sp. nov. accentuates the significance of watersheds in the Western Alps as harbours of aquatic insect biodiversity, and demonstrates the necessity of additional faunal and taxonomic studies in Europe—a supposedly well-explored region.

  • larval morphology of the western balkans endemic caddisflies drusus krusniki malicky 1981 d vernonensis malicky 1989 and d vespertinus marinkovic gospodnetic 1976 trichoptera Limnephilidae drusinae
    Zootaxa, 2016
    Co-Authors: Johann Waringer, Wolfram Graf, Simon Vitecek, Ana Previsic, Miklós Bálint, Lujza Keresztes, Mladen Kucinic, Steffen U. Pauls
    Abstract:

    Drusinae (Trichoptera, Limnephilidae) are highland caddisflies inhabiting high-gradient, turbulent running water and spring habitats. They are disjunctly distributed over the Eurasian mountain ranges, and the majority of species is endemic to particular mountain areas. The most diverse of three main groups of the Drusinae, the grazer clade, consists of species in which larvae feed on epiltihic biofilm and algae. In this paper we describe three previously unknown grazer-clade Drusinae larvae: Drusus krusniki Malicky 1981 (endemic to the Dinaric western Balkans), D. vernonensis Malicky 1989 (endemic to the Hellenic western Balkans), and D. vespertinus Marinkovic 1976 (endemic to the Dinaric western Balkans). The larvae of these species have toothless mandibles typical of the Drusinae grazer clade. Larvae and adults were unambiguously associated using molecular genetic data, i.e., the mitochondrial cytochrome oxidase I gene fragment (mtCOI3-P). Morphological characteristics of the larvae are described and the diagnostic features enabling species-level identification are illustrated. We further discuss the ecology and distribution of three Western Balkan endemic species.

  • a hairy case the evolution of filtering carnivorous drusinae Limnephilidae trichoptera
    Molecular Phylogenetics and Evolution, 2015
    Co-Authors: Simon Vitecek, Wolfram Graf, Ana Previsic, Miklós Bálint, Lujza Keresztes, Steffen U. Pauls, Mladen Kucinic, J Olah, Johann Waringer
    Abstract:

    The caddisfly subfamily Drusinae BANKS comprises roughly 100 species inhabiting mountain ranges in Europe, Asia Minor and the Caucasus. A 3-gene phylogeny of the subfamily previously identified three major clades that were corroborated by larval morphology and feeding ecologies: scraping grazers, omnivorous shredders and filtering carnivores. Larvae of filtering carnivores exhibit unique head capsule complexities, unknown from other caddisfly larvae. Here we assess the species-level relationships within filtering carnivores, hypothesizing that head capsule complexity is derived from simple shapes observed in the other feeding groups. We summarize the current systematics and taxonomy of the group, clarify the systematic position of Cryptothrix nebulicola, and present a larval key to filtering carnivorous Drusinae. We infer relationships of all known filtering carnivorous Drusinae and 34 additional Drusinae species using Bayesian species tree analysis and concatenated Bayesian phylogenetic analysis of 3805bp of sequence data from six gene regions (mtCOI5-P, mtCOI3-P, 16S mrDNA, CADH, WG, 28S nrDNA), morphological cladistics from 308 characters, and a total evidence analysis. All analyses support monophyly of the three feeding ecology groups but fail to fully resolve internal relationships. Within filtering carnivores, variation in head setation and frontoclypeus structure may be associated with progressive niche adaptation, with less complex species recovered at a basal position. We propose that diversification of complex setation and frontoclypeus shape represents a recent evolutionary development, hypothetically enforcing speciation and niche specificity within filtering carnivorous Drusinae.

Johann Waringer - One of the best experts on this subject based on the ideXlab platform.

  • external and internal head anatomy of drusus monticola trichoptera Limnephilidae
    Entomologica Austriaca : zeitschrift der Osterreichischen entomologischen gesellschaft, 2021
    Co-Authors: Carina Zittra, Simon Vitecek, Jan Martini, Stephan Handschuh, Ariane Vieira, Hendrik C Kuhlmann, Johann Waringer
    Abstract:

    External and internal head anatomy of Drusus monticola Trichoptera Limnephilidae Caddisflies have evolved to a staggering diversity, and their larvae inhabit a wide range of different habitats. Also, the larvae differ in their (feeding) ecology, and hydrological niche preference. Consequently, groups differ in their external morphology, a fact that allows to identify many taxa to species-level in the larval stage. However, a comparative treatise on the internal anatomy of larval Trichoptera remains to be presented. Here, we provide a detailed study on the external and internal head anatomy of Drusus monticola, a member of the limnephilid subfamily Drusinae.We found 26 major muscles using μCT-scans, of which the muscles operating the mandibles were the largest. Overall, we could differentiate four main muscle groups: muscles operating the labrum, muscles operating the mandibles, muscles operating the maxillolabium and muscles operating the alimentary canal.The situation as observed in D. monticola is highly similar to that of D. trifidus, the only other Drusinae in which cephalic anatomy is known. We propose that the configuration (muscle origins and number) observed here is characteristic for an evolutionary lineage within Drusinae in which all known members share a scraping grazer feeding ecology. Other Drusinae, including such with modified head capsules, remain to be investigated. Zusammenfassung Externe und interne Anatomie des Kopfes von Drusus monticola Trichoptera Limnephilidae Kocherfliegen haben eine beeindru-ckende Diversitat, und ihre Larven besiedeln ein breites Spektrum unterschiedlicher Habitate. Zudem unterscheiden sich diese Larven in ihrer (Ernahrungs)-Okologie und der Praferenz bestimmter hydrologischer Nischen. Folglich unterscheiden sich diese Gruppen in ihrer Morphologie, ein Umstand, durch den sie erst bestimmbar werden. Eine umfassende vergleichende Bearbeitung der internen Anatomie von Kocherfliegenlarven steht allerdings noch aus. Hier legen wir eine genaue Studie der Kopfkapselanatomie von Drusus monticola vor, einer Limnephilidae aus der Unterfamilie der Drusinae.Wir konnten mittels μCT-Scans 26 Muskeln feststellen, wobei die Mandibelmuskeln bei weitem die grosten sind. Insgesamt konnten wir vier Muskelgruppen differenzie-ren: Muskeln des Labrums, Muskeln der Mandibeln, Muskeln des Maxillolabiums und Muskeln des Verdauungstrakts.Die Organisation, die bei D. monticola vorgefunden wurde, entspricht weitestgehend der, die anhand von D. trifidus beschrieben wurde - der einzigen anderen daraufhin erforschten Drusinae. Wir schliesen daraus, dass die beobachtete Konfiguration fur die evolutionare Linie der schabenden Weideganger innerhalb der Drusinae typisch ist. Bezuglich der Anatomie anderer Drusinae, insbesondere solcher mit abgewan-delten Kopfkapseln, sollten weitere Forschungen angestellt werden.

  • the larva of chaetopteryx rugulosa kolenati 1848 trichoptera Limnephilidae with notes on ecology and zoogeography
    Zootaxa, 2020
    Co-Authors: Oliver Zweidick, Wolfram Graf, Johann Waringer
    Abstract:

    This paper gives a description of the hitherto unknown larva of Chaetopteryx rugulosa Kolenati 1848 (Trichoptera: Limnephilidae). Information on the morphology of the larva is given, and the most important diagnostic features are figured. In the context of the known European Chaetopterygini and Stenophylacini species, the larva of C. rugulosa can be separated from morphologically close species by metanotal sclerite morphology, setation, the extension of the lateral fringe, and by case morphology.

  • the larva of drusus dudor olah 2017 including an updated key to larval drusinae banks 1916 insecta trichoptera Limnephilidae
    ZooKeys, 2020
    Co-Authors: Simon Vitecek, Carina Zittra, Jan Martini, Ariane Vieira, Hendrik C Kuhlmann, Johann Waringer
    Abstract:

    The caddisfly Drusus dudor Olah, 2017 (Limephilidae: Drusinae) was described from the Northwestern Italian Alps. We provide a detailed description of the larva, based on material from the Italian Province of Piemonte. Information on the morphology of the 5th larval instar is given, and the most important diagnostic features are illustrated. The larva is included in an updated key to larval Drusinae where D. dudor keys together with Drusus aprutiensis Moretti, 1981, D. camerinus Moretti, 1981, D. croaticus Marinkovic-Gospodnetic, 1971, D. mixtus (Pictet, 1834), and D. nigrescens Meyer-Duer, 1875. The species can be reliably separated by the morphology of the pronotum, the shape of the metanotal sclerites, and by morphological details of abdominal sternum I.

  • larva of halesus nurag malicky 1974 trichoptera Limnephilidae and diagnostic key for the limnephilid larvae of sardinia
    Zootaxa, 2018
    Co-Authors: Johann Waringer, Hans Malicky
    Abstract:

    This paper gives a description of the hitherto unknown larva of Halesus nurag Malicky 1974 (Trichoptera: Limnephilidae). Information on the morphology of the larva is given, and the most important diagnostic features are figured. In the context of the European Halesus species, the larva of H . nurag is morphologically close to H . appenninus Moretti & Spinelli Batta 1979, H. digitatus (Schrank 1781), H. radiatus (Curtis 1834), and H. tessellatus (Rambur 1842). This new morphological dataset was used for providing a key to the Sardinian limnephilid larvae. In this context, H . nurag can be separated from the other Sardinian species with single-filament gills described so far by chaetotaxonomical characters, mandible morphology, and details of the lateral protuberance of abdominal segment I.

  • Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae)... 79 Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans
    2016
    Co-Authors: Simon Vitecek, Mladen Kučinić, Ana Previšić, János Oláh, Miklós Bálint, Lujza Keresztes, Johann Waringer, Steffen U. Pauls, Wolfram Graf
    Abstract:

    Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans. ZooKey

Steffen U. Pauls - One of the best experts on this subject based on the ideXlab platform.

  • Larval growth and metabolic energy storage of Micropterna lateralis (Trichoptera: Limnephilidae) in an intermittent stream: glycogen dominates in final instars
    Hydrobiologia, 2018
    Co-Authors: Felicitas Hoppeler, Carola Winkelmann, Jochen Becker, Steffen U. Pauls
    Abstract:

    The caddisfly species Micropterna lateralis is an abundant representative of limnephilids in intermittent streams. Yet, its basic life history characteristics and adaptations related to environmental factors, such as stream drying, are comparatively understudied. Here, we investigated larval growth and metabolic energy reserves (glycogen, triglycerides) through development in their natural habitat. We concentrated on the larval development because this period represents the important phase of energy accumulation necessary for growth, metamorphosis and embryogenesis. Besides larval physiology, female adults were studied in terms of ovarian maturation. Our results indicate that adult females lack an imaginal diapause, which is otherwise often observed in intermittent stream-inhabiting Limnephilidae. Further, M. lateralis is univoltine and exhibits a relatively fast larval development with five distinct instars, of which four are characterised here (instars II–V). Accrual of biomass occurs in final instars, where a high amount of glycogen is accumulated. Lipid concentrations, on the other hand, are kept constant in final stages and slightly lower than in preceding instars. This dominance of glycogen in final instars found in M. lateralis is highly unusual in insects and of potential adaptive significance for the species’ ability to exploit intermittent habitats.

  • a larval transcriptome of the limnephilid caddisfly micropterna lateralis stephens 1837 trichoptera Limnephilidae
    Aquatic Insects, 2016
    Co-Authors: Felicitas Hoppeler, Bjorn Rotter, Nicolas Krezdorn, Steffen U. Pauls
    Abstract:

    ABSTRACTThe aquatic caddisfly Micropterna lateralis (Stephens, 1837) is adapted to intermittent streams. Normally, the species persists drought conditions by means of an adult diapause, yet active larvae, pupation and emergence have been observed on dry stream beds. The species, thus, presents a good example to study the molecular basis of local adaptation to different hydrological conditions and freshwater habitat types, but genomic resources are lacking to date. We isolated total RNA and applied Illumina RNA-Seq to a pool of eight larval specimens sampled under different hydrological conditions during a drought experiment simulating stream intermittency. Sequencing resulted in 108′011′306 high-quality reads that were de novo assembled into 17,759 contigs, of which 16,848 were matched to protein sequences from Insects. The transcriptome of M. lateralis is providing a valuable resource for future investigations of molecular mechanisms in drought adaptation in aquatic insects and the secondary invasion of ...

  • taxonomic and ecological notes on the group
    2016
    Co-Authors: Mladen Kučinić, Ildikó Szivák, Steffen U. Pauls
    Abstract:

    Chaetopteryx bucari sp. n., a new species from the Chaetopteryx rugulosa group... 1 Chaetopteryx bucari sp. n., a new species from the Chaetopteryx rugulosa group from Croatia (Insecta, Trichoptera, Limnephilidae) with molecular

  • Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae)... 79 Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans
    2016
    Co-Authors: Simon Vitecek, Mladen Kučinić, Ana Previšić, János Oláh, Miklós Bálint, Lujza Keresztes, Johann Waringer, Steffen U. Pauls, Wolfram Graf
    Abstract:

    Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans. ZooKey

  • larval morphology of the western balkans endemic caddisflies drusus krusniki malicky 1981 d vernonensis malicky 1989 and d vespertinus marinkovic gospodnetic 1976 trichoptera Limnephilidae drusinae
    Zootaxa, 2016
    Co-Authors: Johann Waringer, Wolfram Graf, Simon Vitecek, Ana Previsic, Miklós Bálint, Lujza Keresztes, Mladen Kucinic, Steffen U. Pauls
    Abstract:

    Drusinae (Trichoptera, Limnephilidae) are highland caddisflies inhabiting high-gradient, turbulent running water and spring habitats. They are disjunctly distributed over the Eurasian mountain ranges, and the majority of species is endemic to particular mountain areas. The most diverse of three main groups of the Drusinae, the grazer clade, consists of species in which larvae feed on epiltihic biofilm and algae. In this paper we describe three previously unknown grazer-clade Drusinae larvae: Drusus krusniki Malicky 1981 (endemic to the Dinaric western Balkans), D. vernonensis Malicky 1989 (endemic to the Hellenic western Balkans), and D. vespertinus Marinkovic 1976 (endemic to the Dinaric western Balkans). The larvae of these species have toothless mandibles typical of the Drusinae grazer clade. Larvae and adults were unambiguously associated using molecular genetic data, i.e., the mitochondrial cytochrome oxidase I gene fragment (mtCOI3-P). Morphological characteristics of the larvae are described and the diagnostic features enabling species-level identification are illustrated. We further discuss the ecology and distribution of three Western Balkan endemic species.

Simon Vitecek - One of the best experts on this subject based on the ideXlab platform.

  • external and internal head anatomy of drusus monticola trichoptera Limnephilidae
    Entomologica Austriaca : zeitschrift der Osterreichischen entomologischen gesellschaft, 2021
    Co-Authors: Carina Zittra, Simon Vitecek, Jan Martini, Stephan Handschuh, Ariane Vieira, Hendrik C Kuhlmann, Johann Waringer
    Abstract:

    External and internal head anatomy of Drusus monticola Trichoptera Limnephilidae Caddisflies have evolved to a staggering diversity, and their larvae inhabit a wide range of different habitats. Also, the larvae differ in their (feeding) ecology, and hydrological niche preference. Consequently, groups differ in their external morphology, a fact that allows to identify many taxa to species-level in the larval stage. However, a comparative treatise on the internal anatomy of larval Trichoptera remains to be presented. Here, we provide a detailed study on the external and internal head anatomy of Drusus monticola, a member of the limnephilid subfamily Drusinae.We found 26 major muscles using μCT-scans, of which the muscles operating the mandibles were the largest. Overall, we could differentiate four main muscle groups: muscles operating the labrum, muscles operating the mandibles, muscles operating the maxillolabium and muscles operating the alimentary canal.The situation as observed in D. monticola is highly similar to that of D. trifidus, the only other Drusinae in which cephalic anatomy is known. We propose that the configuration (muscle origins and number) observed here is characteristic for an evolutionary lineage within Drusinae in which all known members share a scraping grazer feeding ecology. Other Drusinae, including such with modified head capsules, remain to be investigated. Zusammenfassung Externe und interne Anatomie des Kopfes von Drusus monticola Trichoptera Limnephilidae Kocherfliegen haben eine beeindru-ckende Diversitat, und ihre Larven besiedeln ein breites Spektrum unterschiedlicher Habitate. Zudem unterscheiden sich diese Larven in ihrer (Ernahrungs)-Okologie und der Praferenz bestimmter hydrologischer Nischen. Folglich unterscheiden sich diese Gruppen in ihrer Morphologie, ein Umstand, durch den sie erst bestimmbar werden. Eine umfassende vergleichende Bearbeitung der internen Anatomie von Kocherfliegenlarven steht allerdings noch aus. Hier legen wir eine genaue Studie der Kopfkapselanatomie von Drusus monticola vor, einer Limnephilidae aus der Unterfamilie der Drusinae.Wir konnten mittels μCT-Scans 26 Muskeln feststellen, wobei die Mandibelmuskeln bei weitem die grosten sind. Insgesamt konnten wir vier Muskelgruppen differenzie-ren: Muskeln des Labrums, Muskeln der Mandibeln, Muskeln des Maxillolabiums und Muskeln des Verdauungstrakts.Die Organisation, die bei D. monticola vorgefunden wurde, entspricht weitestgehend der, die anhand von D. trifidus beschrieben wurde - der einzigen anderen daraufhin erforschten Drusinae. Wir schliesen daraus, dass die beobachtete Konfiguration fur die evolutionare Linie der schabenden Weideganger innerhalb der Drusinae typisch ist. Bezuglich der Anatomie anderer Drusinae, insbesondere solcher mit abgewan-delten Kopfkapseln, sollten weitere Forschungen angestellt werden.

  • the larva of drusus dudor olah 2017 including an updated key to larval drusinae banks 1916 insecta trichoptera Limnephilidae
    ZooKeys, 2020
    Co-Authors: Simon Vitecek, Carina Zittra, Jan Martini, Ariane Vieira, Hendrik C Kuhlmann, Johann Waringer
    Abstract:

    The caddisfly Drusus dudor Olah, 2017 (Limephilidae: Drusinae) was described from the Northwestern Italian Alps. We provide a detailed description of the larva, based on material from the Italian Province of Piemonte. Information on the morphology of the 5th larval instar is given, and the most important diagnostic features are illustrated. The larva is included in an updated key to larval Drusinae where D. dudor keys together with Drusus aprutiensis Moretti, 1981, D. camerinus Moretti, 1981, D. croaticus Marinkovic-Gospodnetic, 1971, D. mixtus (Pictet, 1834), and D. nigrescens Meyer-Duer, 1875. The species can be reliably separated by the morphology of the pronotum, the shape of the metanotal sclerites, and by morphological details of abdominal sternum I.

  • Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae)... 79 Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans
    2016
    Co-Authors: Simon Vitecek, Mladen Kučinić, Ana Previšić, János Oláh, Miklós Bálint, Lujza Keresztes, Johann Waringer, Steffen U. Pauls, Wolfram Graf
    Abstract:

    Description of two new filtering carnivore Drusus species (Limnephilidae, Drusinae) from the Western Balkans. ZooKey

  • a new species of Limnephilidae insecta trichoptera from the western alps insecta trichoptera
    Zootaxa, 2016
    Co-Authors: Wolfram Graf, Simon Vitecek
    Abstract:

    A new species of the alpine caddisfly genus Consorophylax (Trichoptera, Limnephilidae, Stenophylacini) and the female of the recently described C. vinconi Graf & Malicky 2015 are described. The new species C. lepontiorum sp. nov. is a microendemic of the Southwestern Alps and differs from its congeners in the shape of the superior and inferior appendages and the unique setation of the aedeagus, absent in all other Consorophylax species. The female of C. vinconi is characterized by the unique formation of the anal tube. Potential effects of alpine orogenesis, phenology and climatic oscillation on speciation of aquatic insects inhabiting high-altitude habitats are discussed. The description of C. lepontiorum sp. nov. accentuates the significance of watersheds in the Western Alps as harbours of aquatic insect biodiversity, and demonstrates the necessity of additional faunal and taxonomic studies in Europe—a supposedly well-explored region.

  • larval morphology of the western balkans endemic caddisflies drusus krusniki malicky 1981 d vernonensis malicky 1989 and d vespertinus marinkovic gospodnetic 1976 trichoptera Limnephilidae drusinae
    Zootaxa, 2016
    Co-Authors: Johann Waringer, Wolfram Graf, Simon Vitecek, Ana Previsic, Miklós Bálint, Lujza Keresztes, Mladen Kucinic, Steffen U. Pauls
    Abstract:

    Drusinae (Trichoptera, Limnephilidae) are highland caddisflies inhabiting high-gradient, turbulent running water and spring habitats. They are disjunctly distributed over the Eurasian mountain ranges, and the majority of species is endemic to particular mountain areas. The most diverse of three main groups of the Drusinae, the grazer clade, consists of species in which larvae feed on epiltihic biofilm and algae. In this paper we describe three previously unknown grazer-clade Drusinae larvae: Drusus krusniki Malicky 1981 (endemic to the Dinaric western Balkans), D. vernonensis Malicky 1989 (endemic to the Hellenic western Balkans), and D. vespertinus Marinkovic 1976 (endemic to the Dinaric western Balkans). The larvae of these species have toothless mandibles typical of the Drusinae grazer clade. Larvae and adults were unambiguously associated using molecular genetic data, i.e., the mitochondrial cytochrome oxidase I gene fragment (mtCOI3-P). Morphological characteristics of the larvae are described and the diagnostic features enabling species-level identification are illustrated. We further discuss the ecology and distribution of three Western Balkan endemic species.

Houghton David - One of the best experts on this subject based on the ideXlab platform.