Chalcopteryx scintillans McLachlan, 1870

DeMarmels, Jurg, 1992, Dragonflies (Odonata) From The Sierras Of Tapirapeco And Unturan, In The Extreme South Of Venezuela, Acta Biologica Venezuelica 14 (1), pp. 57-78 : 59

Chalcopteryx scintillans McLachlan, 1870

Figure 7 (larva)

Material. 8 ♂, 3 ♀; 1 ♀ larva (ultimate instar exuviae), Unturan.

Larva.- Uniformly brown and hardly distinguishable in its general appearance from larvae of Chalcothore montgomeryi (Racenis) described by DeMarmels (1988). The caudal gills, presumably those structures of most diagnostic value, are, however, lost. Labium narrower than in Ch. montgomeryi ; ovipositor surpassing end of segment 10 by one third of its length (less than one third in Ch. montgomeryi ). Wing sheaths reaching end of segment 6 (end of segment 5 in Ch. montgomeryi ). The latter two characters are usually subject to a high degree of variability. The figures of the larva of Chalcopteryx rutilans (Rambur) in SANTOS & COSTA (1987) are too generalized as to allow any comparison with Ch. scintillans .

Measurements. Total length (excl. caudal gills) 8.6; hind femur 2.6; hind tibia 3.0.

Figures

Plate II: Figure 7. Chalcopteryx scintillans, female ultimate instar exuviae, labium, ventral view. Figures 8-10. Dimeragrion unturanense sp.n. (8) holotype male, abdominal segment 10 with anal appendages, left lateral view; (9) same, dorsal view; (10) female, paratype, tip of abdomen, left lateral view. Figure3 11-12. Megapodagrion megalopus, male. (11) penis, ri.ght lateral view; (12) same, ventral view. Figures 13-14. Allopodagrion oscillans (Venezuela, Tachira, Betania). male. (13) penis, right lateral view; (14) same, ventral view.