. Bulletin of the British Museum (Natural History), Geology. r tssoto ^V. The systematics and palaeogeography I * / of the Lower Jurassic insects of Dorset, England P. E. S. WhaljejL Department of Entomology, British Museum (Natural History), Cromwell SW7 5BD Contents Synopsis 107 Introduction 108 Geology, preservation and techniques 109 Check-list of insects from the Dorset Lias 110 Survey of Insect Orders from the Dorset Lias Ill Systematic section 113 Blattodea, cockroaches 113 Dermaptera, earwigs 116 Odonata, dragonflies 117 Orthoptera, grasshoppers and crickets 126 Phasmatodea, stick-inse
. Bulletin of the British Museum (Natural History), Geology. r tssoto ^V. The systematics and palaeogeography I * / of the Lower Jurassic insects of Dorset, England P. E. S. WhaljejL Department of Entomology, British Museum (Natural History), Cromwell SW7 5BD Contents Synopsis 107 Introduction 108 Geology, preservation and techniques 109 Check-list of insects from the Dorset Lias 110 Survey of Insect Orders from the Dorset Lias Ill Systematic section 113 Blattodea, cockroaches 113 Dermaptera, earwigs 116 Odonata, dragonflies 117 Orthoptera, grasshoppers and crickets 126 Phasmatodea, stick-insects 137 Hemiptera, plant bugs 140 Raphidioptera, snakeflies 147 Mecoptera, scorpion flies 150 Diptera, two-winged flies 157 Lepidoptera, butterflies and moths 159 Coleoptera, beetles 164 Discussion 176 Comparison with other Mesozoic faunas 181 Palaeogeography 182 Phylogeny 183 Acknowledgements 184 References 184 Index 187 Synopsis Over 400 Lower Liassic insect fossils collected in Dorset, England, have been studied. These include 66 species in over 30 genera of which 11 new genera and 21 new species are described and their relationships discussed. Several families of insects are recorded for the first time in Britain, while the Orders Dermap- tera (earwigs), Phasmatodea (stick-insects) and a scale-covered lepidopterous insect are recorded for the first time in the Lower Lias. The following new taxa are proposed: Nannoblattina petulantia sp. nov. (Blattodea); Brevicula gradus gen. et sp. nov. (Dermaptera); Liassophlebia pseudomagnifica sp. nov., Hypsothemis fraseri sp. nov. and Dorsettia laeta gen. et sp. nov. (Odonata); Archelcana durnovaria sp. nov., Orichalcum ornatum gen. et sp. nov., Regiata scutra gen. et sp. nov. and Micromacula gracilis gen. et sp. nov. (Orthoptera); Durnovaria parallela gen. et sp. nov. (Phasmatodea); Paraprosbole rotruda gen. et sp. nov. and Mesocixiella (l)fennahi sp. nov. (Hemiptera-Homoptera); Metaraphidia confusa gen. et sp. nov. and Priscaenigma o
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