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File:The biology of dragonflies (Odonata or Paraneuroptera) (1917) (20194428360).jpg

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Description
English:

Title: The biology of dragonflies (Odonata or Paraneuroptera)
Identifier: biologyofdragonf00till (find matches)
Year: 1917 (1910s)
Authors: Tillyard, Robin John, 1881-1937
Subjects: Dragon-flies
Publisher: Cambridge (Eng. ) : University Press
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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Text Appearing Before Image:
xiv) CLASSIFICATION 273 Tribe 8. Trameini (fig. 136, also PI. I, fig. 3). Sectors of arculus either separate or only slightly united in forewing. Arc. between Axi and Ax,- Anal field of hindwing exceedingly wide, mostlj'^ with numerous cells arranged in numerous rows transversely to the wing-axis. Anal loop long, with well-formed toe, and complete mid-rib bent at an obtuse angle. Often A 2 gives off at its basal third a sector separating off the narrow-
Text Appearing After Image:
Fig. 1.36. Wings of Tramea loewii Br., ^, Queensland. (Hw. 37 mm.) Original. celled proximal anal field from a portion containing larger cells, between it and the loop. Last Ax of forewing incomplete except in the last four genera. Lobe of prothorax small. Larva somewhat Eucorduline in appearance, with oval body, longish legs and huge head, the eyes exceedingly prominent, the mask immense (figs. 29 E, F; 36 h). Suborder ZYGOPTERA. Fore and hindwings closely similar in form, with narrow or petiolate bases. Radius unbranched. An extra branch of the media (the Zygopterid sector Ms) takes the place of Rs in the Anisoptera. No bridge or obUque vein (except in Lestidae). Discoidal cell in the form of a simple quadrilateral, crossed or free. Wings in repose folded back vertically above abdomen (a few exceptions). Eyes button-shaped, projecting laterally at sides of head, separated by a space greater than their dorsal diameter (except Epiojyhlebia). Labium with middle lobe deeply cleft. Male with four anal appendages, two superior and two inferior. Penis not distinctly jointed. Female with superior appendages only. Ovipositor complete. Larvae cercobranchiate, with three caudal gills projecting from end of abdomen, one medio-dorsal, the other two latero-ventral; the rectum also used for breathing, but not possessing true tracheal gills as in the Anisoptera. Lateral abdominal gills very rarely present. Abdomen slender, often elongated. Gizzard with eight to sixteen radially symmetrical fields. T D.-F. 18

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https://www.flickr.com/photos/internetarchivebookimages/20194428360/

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Flickr tags
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  • bookid:biologyofdragonf00till
  • bookyear:1917
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Tillyard_Robin_John_1881_1937
  • booksubject:Dragon_flies
  • bookpublisher:Cambridge_Eng_University_Press
  • bookcontributor:University_of_California_Libraries
  • booksponsor:Internet_Archive
  • bookleafnumber:297
  • bookcollection:cdl
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
7 August 2015

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19 September 2015

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