Zootaxa, Revision of the Willow Catkin Flies, Genus Egle Robineau
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ZOOTAXA 2043 Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas VERNER MICHELSEN Magnolia Press Auckland, New Zealand Verner Michelsen Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas (Zootaxa 2043) 76 pp.; 30 cm. 16 Mar. 2009 ISBN 978-1-86977-337-3 (paperback) ISBN 978-1-86977-338-0 (Online edition) FIRST PUBLISHED IN 2009 BY Magnolia Press P.O. Box 41-383 Auckland 1346 New Zealand e-mail: [email protected] http://www.mapress.com/zootaxa/ © 2009 Magnolia Press All rights reserved. No part of this publication may be reproduced, stored, transmitted or disseminated, in any form, or by any means, without prior written permission from the publisher, to whom all requests to reproduce copyright material should be directed in writing. This authorization does not extend to any other kind of copying, by any means, in any form, and for any purpose other than private research use. ISSN 1175-5326 (Print edition) ISSN 1175-5334 (Online edition) 2 · Zootaxa 2043 © 2009 Magnolia Press MICHELSEN Zootaxa 2043: 1–76 (2009) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2009 · Magnolia Press ISSN 1175-5334 (online edition) Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas VERNER MICHELSEN Zoological Museum, Natural History Museum of Denmark, University of Copenhagen, Denmark & Museum of Zoology, Lund University, Sweden. E-mail: [email protected] Table of contents Abstract ............................................................................................................................................................................... 4 Introduction ......................................................................................................................................................................... 4 Material and methods.......................................................................................................................................................... 5 Taxonomic history ............................................................................................................................................................... 5 Monophyly and relationships.............................................................................................................................................. 6 Adult habits, pollen-feeding and mouth part structure ....................................................................................................... 6 Immature stages .................................................................................................................................................................. 8 Genus Egle Robineau-Desvoidy, 1830.............................................................................................................................. 13 The Egle concomitans section .......................................................................................................................................... 14 1. Egle concomitans (Pandellé, 1900) ........................................................................................................................ 14 The Egle longirostris species group ............................................................................................................................. 18 2. Egle myricariae Grossmann, 1998 ....................................................................................................................... 18 3. Egle longirostris (Stein, 1907) ............................................................................................................................. 20 The Egle brevicornis section ............................................................................................................................................ 21 The Egle brevicornis species group ............................................................................................................................. 23 4. Egle ciliata (Walker, 1849) .................................................................................................................................. 23 5. Egle brevicornis (Zetterstedt, 1838)..................................................................................................................... 25 6. Egle anderssoni sp. nov. ...................................................................................................................................... 27 The Egle pilitibia species group .................................................................................................................................... 30 7. Egle pilitibia (Ringdahl, 1918) ............................................................................................................................ 30 The Egle minuta section .................................................................................................................................................. 33 8. Egle atomaria (Zetterstedt, 1845) ........................................................................................................................ 33 The Egle steini species group ....................................................................................................................................... 35 9. Egle parvaeformis Schnabl in Schnabl & Dziedzicki, 1911................................................................................ 35 10. Egle steini Schnabl in Schnabl & Dziedzicki, 1911 ........................................................................................... 37 11. Egle ignobilis sp. nov. ........................................................................................................................................ 39 12. Egle inermis Ackland, 1970 ............................................................................................................................... 40 13. Egle inermoides sp. nov. .................................................................................................................................... 43 14. Egle groenlandica sp. nov. ................................................................................................................................44 The Egle setiapicis species group ................................................................................................................................ 45 15. Egle setiapicoides sp. nov. ................................................................................................................................. 45 The Egle subarctica species group ............................................................................................................................... 47 16. Egle subarctica (Huckett, 1965) ........................................................................................................................ 47 17. Egle subarcticoides sp. nov. .............................................................................................................................. 49 The Egle rhinotmeta species group .............................................................................................................................. 50 18. Egle rhinotmeta (Pandellé, 1900) ...................................................................................................................... 51 The Egle minuta species group .................................................................................................................................... 53 Accepted by J. O'Hara: 14 Jan. 2009; published: 16 Mar. 2009 3 19. Egle minuta (Meigen, 1826) ............................................................................................................................... 53 20. Egle parva Robineau-Desvoidy, 1830 ................................................................................................................. 56 21. Egle lyneborgi Ackland & Griffiths, 2003 .......................................................................................................... 58 22. Egle suwai sp. nov. ............................................................................................................................................. 69 Identification key to male and female Egle of Europe and neighbouring areas ............................................................... 69 Acknowledgements ........................................................................................................................................................... 72 References......................................................................................................................................................................... 72 Abstract Egle Robineau-Desvoidy is a modest-sized genus of small blackish anthomyiids with a Holarctic and northern Oriental distribution. They are univoltine, interacting closely with the host plants of their seed-feeding larvae, mainly species of willow (Salix), but also poplar (Populus) and false tamarisk (Myricaria) support some species. Summaries are given of adult and larval habits based on published and new observations. Adult mouth part structure in relation to pollen feeding is treated in some detail. A taxonomic revision with illustrated descriptions and an identification key to males and females is given for