. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. IV] THE LARVA OR NYMPH 83 (vi) Lestinae (fig. 32 h, j). A most remarkable and highly differentiated type. Mentum and sub-mentum of variable length;. Fig. 32. Variations in the form of the mask, chiefly in the lateral lobes, a. Aeschna brevistyla Ramb. b. Gynacantha rosenherghi Selys. c. Austropetalia patricia Tillyard. D. Hemigomphus heteroclitus Selys. e. Diphlebia hstoides Selys, F. Caliagrion billinghursti Martin. G. Synlestes weyersi Selys (with cleft median lobe also shewTi). h. Austrolestes mmlis Ramb. j. Austroleste
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. IV] THE LARVA OR NYMPH 83 (vi) Lestinae (fig. 32 h, j). A most remarkable and highly differentiated type. Mentum and sub-mentum of variable length;. Fig. 32. Variations in the form of the mask, chiefly in the lateral lobes, a. Aeschna brevistyla Ramb. b. Gynacantha rosenherghi Selys. c. Austropetalia patricia Tillyard. D. Hemigomphus heteroclitus Selys. e. Diphlebia hstoides Selys, F. Caliagrion billinghursti Martin. G. Synlestes weyersi Selys (with cleft median lobe also shewTi). h. Austrolestes mmlis Ramb. j. Austrolestes psyche Selys (distal border), k. Pefalura giganlea Leach (with prominent median lobe also shewn), l. Cordulegaster annulatus Latr. m. Azuma elegans Br. n. Diplacodes haematodes Burm. (with half of mentum also shewn), o. Hemicordulia tau Selys (distal border), p. Austrocordulia refracta Tillyard. Q. Cordidephya pygmaea Selys. k. Calopteryx splendens Harris (deeply cleft median lobe). Original. 6—2. 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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