. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. XIV] CLASSIFICATION 275 about half-way between base and nodus, or nearer to base (much nearer in Philofjauga). Larva not known for certain^. Tribe 3. Amphipterygini (fig. 139). Wings petiolate. Few antenodals of the first series, only 2-3 in second series. Aiculus nearer to base than to nodus. Larva without lateral gills; caudal gills of saccoid form, tapering to a point (fig. 35).. Fig. 139. Basal half of forewing (total length 32 mm.) of Diphlebia nymphoides Tillyard, ^, New South Wales. Original. Subfamily 2. Thorinae (
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. XIV] CLASSIFICATION 275 about half-way between base and nodus, or nearer to base (much nearer in Philofjauga). Larva not known for certain^. Tribe 3. Amphipterygini (fig. 139). Wings petiolate. Few antenodals of the first series, only 2-3 in second series. Aiculus nearer to base than to nodus. Larva without lateral gills; caudal gills of saccoid form, tapering to a point (fig. 35).. Fig. 139. Basal half of forewing (total length 32 mm.) of Diphlebia nymphoides Tillyard, ^, New South Wales. Original. Subfamily 2. Thorinae (fig. 21). Sectors of arculus arising from top of arculus ; hence quadrilateral irregular, with basal side longer than distal side. Pterostigma long, regularly formed. Larva (Cora) similar to that of the Epallaginae, with lateral abdominal gills; caudal gills not tapering to a point, but irregularly truncated. Mandibles bii'amous. Subfamily 3. Calopteryginae (figs. 140, 151, 177, also PI. I, figs. 6, 7). Sectors of arculus arising from lower third of arculus. il^i_2 arching strongly upwards from M^, so as to approach R very closely, and, in some cases, even fusing with R. Pterostigma much reduced, false, or completely 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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