. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 276 CLASSIFICATION [CH, Mask elongated, hollow, with the elongated median lobe deeply incised medially. Caudal gills pecuUar, the median one short, lamellar; the laterals long, triquetral. No lateral abdominal gills. Family 2. Lestidae. Wings distinctly petiolate. Ms fused with ilfg for some distance, leaving it via an oblique vein. A long bridge formed from the latter back to near the bifurcation of M^ from M^^^- Antenodals variable in number. Very little arrangement of cross-veins into transverse sets. Pterostigma long,
. The biology of dragonflies (Odonata or Paraneuroptera). Dragon-flies. 276 CLASSIFICATION [CH, Mask elongated, hollow, with the elongated median lobe deeply incised medially. Caudal gills pecuUar, the median one short, lamellar; the laterals long, triquetral. No lateral abdominal gills. Family 2. Lestidae. Wings distinctly petiolate. Ms fused with ilfg for some distance, leaving it via an oblique vein. A long bridge formed from the latter back to near the bifurcation of M^ from M^^^- Antenodals variable in number. Very little arrangement of cross-veins into transverse sets. Pterostigma long, regular. Wings rarely coloured. Body-pattern bicolorous, or metallic unicolorous. Larva of slender build; abdomen long and cylindrical. IMask with highly specialized forms of lateral lobes; gizzard with eight large specialized fields, carrying both large and small teeth. Caudal gills in the form of simple lamellae. Subfamily 1. Epiophlebiinae (fig. 141). Wings only sUghtly petioled. Xodus close to middle of wing. Numerous antenodals, those of the first and second series not corresponding, except two (the first, and one between the third and sixth) which are specially thickened (cf. Aeschnidae). il/., arises at subnodus. Bridge connects proximally with. Fig. 141. Wings of Epiophlebia superstes Selys, Japan. (Hw. 31 mm.) After Needham. ilf i_2 a Uttle distad from il/g. Quadrilateral of hindwing broader than that of forewing, with longer costal side. Insect of rather stout build, resembling the Gomphinae; eyes close together in male; body-pattern bicolorous. Larva 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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