File:The biology of dragonflies (Odonata or Paraneuroptera) (1917) (20382447275).jpg

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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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260 CLASSIFICATION (CH. Subfamily 1. Gomphinae. Triangles short or moderately so, that of hiiidwing slightly more elongated than that of forewing. Subtriangles present in all wings. Median space always free. Anal loop absent or rudimentary. Eyes quite separate; epicranium ending posteriorly in a sharp occipital sheH. Labium with median lobe complete, not incised. Inferior appendage of male strongly bifid. Ovipositor of female reduced to a pair of valvula vulvae at end of eighth sternite. Larva with variably-shaped abdomen. Legs modified for digging, fore and middle tarsi 2-jointed. Antennae reduced to four joints, and more or less swollen. Mask with flat median lobe, lateral lobes with narrow rounded apex and strong movable hook. Gizzard with four elongated fields, carrying numerous undifferentiated teeth. GiUs simplex; undulate or papillate. Tribe 1. Ictinini (fig. 117). Moderate to large-sized Gomphinae with triangles crossed, at least in one pair of wings. Membranule present or absent. Distal side of triangle often
Text Appearing After Image:
Fig. 117. Wings of Ictinus australis Selys, ^, Queensland. (Hw. 38 mm.) Original. distinctly broken near distal angle. Larva of variable shape. A heterogeneous tribe including two series: Series 1. GompJioides-Series. Membranule absent or reduced. Larva with elongated abdomen. New World (except Davidius and Sieboldius). Series 2. IctinusSeries. Membranule distinct. Larva with short rounded abdomen (fig. 36 a). Old World (except Cacus).

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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:284
  • bookcollection:cdl
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
7 August 2015

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19 September 2015

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