Lestidae

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Lestidae
Female Austrolestes cingulatus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Suborder: Zygoptera
Family: Lestidae
Calvert 1901
Genera

Lestidae is a rather small family of cosmopolitan, large-sized, slender damselflies. They are of the order of the dragonflies (Odonata) and are commonly known as spreadwings. The two subfamilies in Lestidae are Lestinae and Sympecmatinae. Damselflies in Lestinae rest with their wings partly open; the damselflies in Sympecmatinae, reedlings, ringtails, and winter damselflies, rest with their wings folded.

While most damselflies rest with their wings folded together, most members of the family Lestidae hold them at an angle away from their bodies. The pterostigma (a single dark spot in the meshwork of the leading edge near the tip of each wing) is noticeably elongated. The quadrilateral (a part of the wing venation, close to the body) has an acute angle at the end. The body has a greenish, metallic shine. The superior anal appendages, commonly called claspers (body parts of male insect for clasping the female during copulation) of male spreadwings are long and strongly curved.

The genetic makeup is still disputed, going from 12 genera[1] to eight genera.[2]

References

  1. ↑ Davies, D.A.L. (1981). A synopsis of the extant genera of the Odonata. Soc. Int. Odonatol. Rapid Comm. 3 : i-xiv 1-59
  2. ↑ Bridges, C.A. (1994). Catalogue of the family-group, genus-group and species-group names of the Odonata of the world. Urbana, Illinois : C.A. Bridges 3rd Edn xiv 951 pp.

See also

Wikimedia Commons has media related to Lestidae.
A male Lestes dryas in the "spread-winged" posture that gives the family its common name
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