. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 86 THE LARVA OR NYMPH [CH. ridges are placed obliquely, the mesopleurae having grown forward to meet one another in the middle line in front of them. The wing- sheaths {u'2, u's) nearly always lie parallel and flat along the back of the abdomen, and reach as far as the end of the fourth segment or beyond. In the Cordulegastrinae and Synthemini they are strongly divergent (fig. 33). The metastiymata (sp^) are present, but very Fig. 33. Larva of Synthemis eustalacta Burm,, with divergent wing-sheaths. ( x2.) Original
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 86 THE LARVA OR NYMPH [CH. ridges are placed obliquely, the mesopleurae having grown forward to meet one another in the middle line in front of them. The wing- sheaths {u'2, u's) nearly always lie parallel and flat along the back of the abdomen, and reach as far as the end of the fourth segment or beyond. In the Cordulegastrinae and Synthemini they are strongly divergent (fig. 33). The metastiymata (sp^) are present, but very Fig. 33. Larva of Synthemis eustalacta Burm,, with divergent wing-sheaths. ( x2.) Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tillyard, Robin John, 1881-1937. Cambridge [Eng. ] : University Press
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