izgi6>l WAGENINGEN AGRICULTURAL UNIVERSITY PAPERS 06-1(2006) Ahistologica l description ofth e alimentary tract andrelate d organs ofAdelgida e (Homoptera, Aphidoidea) M.B. Ponsen Dateo fpublication :Februar y 2006 WABENINGEN UNIVERSITY Universityfor Life Sciences : Ç), \'CJ-..I \-:'V ^5!^) Key words: Adelgidae, histology, alimentary tract, salivary pump, mycetome, endosymbionts, oenocytes, sexuales M.B. Ponsen Hollandseweg 204 6706 KW Wageningen The Netherlands Phone: 00-31-(0)317-414158 E-mail:
[email protected] A histological description of the alimentary tract and related organs of Adelgidae (Homoptera, Aphidoidea) / M.B. Ponsen ISBN-10: 90-5782-174-5 ISBN-13: 978-90-5782-174-5 NUR 942 ISSN 0169-345X Distribution: Backhuys Publishers, P.O. Box 321,230 0 AH Leiden, The Netherlands Phone: 00-31-(0)71-5170208 Fax:00-31-(0)71-5171856 E-mail:
[email protected] All rights reserved Printed in The Netherlands by Modern BV, Bennekom Contents Summary 4 Introduction 5 Materials and methods 8 Alimentary tract 10 Stylet bundle 10 Crumena 10 Retort-shaped organ 16 Pharynx 20 Foregut 24 Oesophageal valve 24 Stomach 28 Crenated intestine 28 Descending intestine 30 Rectum 32 Epidermal invagination 32 Anal opening 32 Ovarioles 39 Sexuales 43 Salivary gland system 47 Mycetome 52 Oenocytes 56 Mesodermal tissue 57 Discussion 61 Pharynx 61 Digestive system 61 Rectal organ 76 Oenocytes 76 Haemolymph 78 Multinucleated structure 78 Sexuales 85 Endosymbionts 88 Acknowledgements 96 References 97 Abbreviations used in figures 102 Summary In all species of the Adelgidae the ectodermal part of the alimentary tract consists of a stylet bundle housing in a crumena, pharyngeal duct, valve, and pump, foregut, and oesophageal valve.