Mecistogaster

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Cladus: Odonatoptera
Cladus: Holodonata
Ordo: Odonata
Subordo: Zygoptera
Superfamilia: Coenagrionoidea

Familia: Coenagrionidae
Genus: Mecistogaster
Species: M. amalia – M. amazonica – M. asticta – M. buckleyi – M. jocaste – M. linearis – M. lucretia – M. martinezi – M. modesta – M. ornata – M. pronoti
Name
Mecistogaster Rambur, 1842

Mecistogaster is a genus of large Neotropical damselflies in the family Pseudostigmatidae, commonly known as helicopter damsels. There are eleven species distributed from Mexico to Argentina.[1]

Members of this genus have very long abdomens which they use to deposit their eggs in the water-filled rosettes of bromeliads growing on trees in the forest.[2]

Species include:

Mecistogaster amalia (Burmeister, 1839) - Amalia Helicopter[3]
Mecistogaster amazonica Sjöstedt, 1918
Mecistogaster asticta Selys, 1860
Mecistogaster buckleyi McLachlan, 1881 - Blue-tipped Helicopter[4]
Mecistogaster jocaste Hagen, 1869
Mecistogaster linearis (Fabricius, 1776)
Mecistogaster lucretia (Drury, 1773)
Mecistogaster martinezi Machado, 1985 (nomen obscurum)
Mecistogaster modesta Selys, 1860
Mecistogaster ornata Rambur, 1842 - Ornate Helicopter[5]
Mecistogaster pronoti Sjöstedt, 1918 - Atlantic Helicopter[6]

References
Wikimedia Commons has media related to Mecistogaster.

Irusta, J. B., & Lencioni, F. A. A. (2015). First record of Pseudostigmatidae (Insecta: Odonata) in the Northeast Region of Brazil. Check List, 11(2), 1565.
Silsby, Jill (2001). Dragonflies of the World. Csiro Publishing. p. 14. ISBN 978-0-643-10249-1.
von Ellenrieder, N. & Paulson, D. (2006). "Mecistogaster amalia". IUCN Red List of Threatened Species. 2006: e.T59739A12010532. doi:10.2305/IUCN.UK.2006.RLTS.T59739A12010532.en.
von Ellenrieder, N. (2009). "Mecistogaster buckleyi". IUCN Red List of Threatened Species. 2009: e.T159012A5306474. doi:10.2305/IUCN.UK.2009-2.RLTS.T159012A5306474.en.
von Ellenrieder, N. (2009). "Mecistogaster ornata". IUCN Red List of Threatened Species. 2009: e.T158808A5276319. doi:10.2305/IUCN.UK.2009-2.RLTS.T158808A5276319.en.
von Ellenrieder, N. & Paulson, D. (2006). "Mecistogaster pronoti". IUCN Red List of Threatened Species. 2006: e.T12921A3398561. doi:10.2305/IUCN.UK.2006.RLTS.T12921A3398561.en.