Pantala flavescens

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Pantala flavescens
Pantala flavescens-Kadavoor-2017-05-04-002.jpg
male, Kerala, India
Wandering glider (Pantala flavescens).JPG
female, Grand Cayman, Cayman Islands
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Infraorder: Anisoptera
Family: Libellulidae
Genus: Pantala
Species:
P. flavescens
Binomial name
Pantala flavescens
(Fabricius, 1798) [2]
Pantala flavescens distribution map.svg
Distribution of Pantala flavescens
Synonyms
  • Libellula analisBurmeister, 1839
  • Libellula flavescensFabricius, 1798
  • Libellula terminalisBurmeister, 1839
  • Libellula viridulaPalisot de Beauvois, 1807
  • Orthetrum mathewiSingh & Baijal, 1955
  • Sympetrum tandicolaSingh, 1955

Pantala flavescens, [3] the globe skimmer, globe wanderer or wandering glider, [1] is a wide-ranging dragonfly of the family Libellulidae. [1] This species and Pantala hymenaea , the "spot-winged glider", are the only members of the genus Pantala. It was first described by Johan Christian Fabricius in 1798. [4] It is considered to be the most widespread dragonfly on the planet, with good population on every continent except Antarctica, although rare in Europe. [1] [5] Globe skimmers make an annual multigenerational journey of some 18,000 km (about 11,200 miles); to complete the migration, individual globe skimmers fly more than 6,000 km (3,730 miles)—one of the farthest known migrations of all insect species.

Contents

Characteristics

Structure of the adult

Sexual dimorphism
Davidraju IMG 5948.jpg
Male has narrow apical brown spot at the hind border of wings
Pantala flavescens at Kadavoor.jpg
Female lacks apical brown patches in wings
Pantala flavescens female wings (34249195253).jpg
Female wings
Pantala flavescens male wings (34249196853).jpg
Male wings

The dragonfly is up to 4.5 cm long, [6] reaching wingspans between 7.2 cm and 8.4 cm. [7] [8] [9] The front side of the head is yellowish to reddish. The thorax is usually yellow to golden coloured with a dark and hairy line. There were also specimens with a brown or olive thorax. The abdomen has a similar colour as the thorax. [7] [10] [8]

The wings are clear and very broad at the base. There, too, there are some specimens with olive, brown and yellow wings. On Easter Island there are wandering gliders with black wings. [7] [10] [8]

The pterostigma turns yellowish. The transparent wings may turn a yellowish shade towards the tip. The chestnut-red eyes take up most of the head, as is usual in the large dragonflies (Anisoptera). [11] [8] The above colours explain the many scientific descriptions of this species under different names.

Females show some differences compared with males. The general rule is, the males have reddish yellow abdomen marked with black whereas the females lack the reddish wash in abdomen. The males have golden yellow patch on base of hindwings and narrow apical brown spot at the hind border of wings. The females lack apical brown patches in wings. [8] [9]

In mainland males, the length of the femur, the longest leg section, varies; they also have longer front and shorter hindwings than the females. The island representatives, however, have the front and hindwings longer than the female, and the femur is the same for both sexes. There are other differences between mainland and island specimens, particularly in terms of colouring. Island representatives are generally darker. [10]

Structure of the larva

Exuviae Pantala flavescens excuvia by Jeganathan.jpg
Exuviae

The larva is between 24 and 26 mm long. It is light green with light, purple speckles. The round eyes are sideways on the bottom of the head, the abdomen and the tail blunt. [12]

The paired side plates on the eleventh segment of the abdomen, the so-called paraproct, is smooth when seen from the side. The unpaired dorsal plate of the eleventh segment, called the epiproct, is roughly the same length as or longer than the paraproct. This distinguishes them from larvae of the genus Tramea , where the epiproct is shorter than the paraproct. Furthermore, the mouth parts ( palpus ) have 12–14 bristles and thus fewer than P. hymenaea which has 15–18 bristles. [13]

Similar species

Pantala hymenaea; note the brown basal fleck in the hindwing Spot-winged Glider - Pantala hymenaea, Bles Park, Ashburn, Virginia - 7680788092.jpg
Pantala hymenaea ; note the brown basal fleck in the hindwing

Pantala flavescens may be confused with the P. hymenaea , the "spot-winged glider", but this has a striking brown basal fleck in the hindwing and is generally slightly darker in colour. It might be taken for a member of the genus Tramea but these usually have a distinctive stripe on their hindwings. [14]

Life cycle

Reproduction and development

Mating in Bhuvanagiri, Telangana Wandering Glider (Pantala flavescens) mating W IMG 2999.jpg
Mating in Bhuvanagiri, Telangana

As is usual in the Libellulidae family, there is no distinct courtship ritual. The females may pair many times, but usually only once a day. [15]

After mating, the migrant dragonflies fly in tandem, with the female ovipositing while the male remains connected. A clutch consists of about 500 to 2000 eggs. The eggs are spheroid in shape with the semi-major axis 0.5 mm and 0.4 mm at the smallest points. [16]

The larvae develop within 38 to 65 days, [17] which allows this migrant dragonfly to reproduce in temporary waters or even in swimming pools. [18] However, the larvae seem to be very sensitive to temperature. [19] The life expectancy is not known and because of their high mobility it is almost impossible to determine.

Food

The larvae of the globe skimmer, like all dragonflies, are predatory. They forage very actively and eat fairly indiscriminately all sorts of aquatic invertebrates, such as aquatic insect larvae and small shrimps (Peracarida). Even tadpoles and small fish are used for food. The imago mostly eats small flying insects such as mosquitoes, swarming flying ants, and termites. [12]

Flight behaviour

Pantala flavescens wandering behaviour Pantala flavescens (globe skimmer) in flight, side view.jpg
Pantala flavescens wandering behaviour

They are very conspicuous dragonflies; seen in swarms over paddy fields, playgrounds or open areas. They fly tirelessly with typical wandering flight for hours without making any perch. [8] Their flight speed is up to 5 m/s. [20] Especially in the autumn, the wandering glider flies in large swarms, using thermals to advantage. One report even speaks of a "cloud" covering 34 km2. [12] They prefer moist winds. [21] In normal flight, island populations keep to 2.5 meters above the ground and stop flying in thermal updraughts. The continental populations fly at altitudes of three to four meters, and do not stop flying even in bad weather. Those on Easter Island have adapted away from their migratory habits because to fly out to the open sea would usually mean certain death. [10]

When landing, it seeks a vertical attitude. [6] Like all large dragonflies, the wings are held out from the body at rest.

Distribution and flight

An aggregation of dragonflies during migration PantalaFlavescensTalakaveri.jpg
An aggregation of dragonflies during migration

The globe skimmer, as its name suggests, has a very wide distribution area, between about the 40th parallels of latitude or within the 20 °C isotherm (areas of the world where the annual mean temperature is above 20 degrees Celsius), and up to about the 50th parallel north in North America. [22] [23] In Europe there are only occasional sightings of the species, with credible evidence to date mainly from the Aegean Sea and the adjacent mainland. Globe skimmer records from England or France are doubtful and may arise from co-importation with shipments of bananas. An explanation for the scarcity in Europe of this otherwise common species is the barrier effect of the Sahara which generates unfavourable winds, such as the Sirocco, [21] whose dryness makes dragonfly passage almost impossible. [24]

Their arrival in the subtropics and tropics coincides with the Intertropical Convergence Zone. [25] More evidence of their preference for moist winds is that the dragonfly migrates to Southeast India's Tamil Nadu only after the second monsoon, which brings the rain to that region. In the rest of India, however, it arrives with the first rain-making monsoon. [21] Observations and stable isotope evidence suggests that they migrate from India or beyond to Africa across the Arabian Sea. [26] [27] A recent sighting indicates the journey might start as far east as Meghalaya in India. The winds during the migration from India to mainland Africa are not as strong as the Somali jet, and thus there are multiple stopovers en route at the Maldives, Seychelles, and Mozambique. During the return journey, migrating swarms start arriving on the west coast of India May onwards, riding the strong winds of Somali Jet, and completing the journey from Africa to India, spanning about 3000 km (1860 miles) in a single flight. [28]

It is the highest-flying dragonfly, recorded at 6,200 m in the Himalayas. It was also first dragonfly species that settled on Bikini Atoll after the nuclear tests there. [18] Furthermore, it is the only Odonata on Easter Island. These individuals seem to be a small gene pool, derived from the continental populations, which is slowly creating a new type by genetic drift. The species cannot overwinter in colder areas like South Australia and Southern Canada, and must therefore be resupplied there by new migrants each year. [10]

According to recent research carried out by biologists at Rutgers University-Newark this species of dragonfly is the world's longest known distance insect traveller. Genetic evidence taken from dragonflies across the globe suggests that these small size insects are travelling vast distances to mate and are thus creating a worldwide gene pool. [29] Another study concluded that Pantala flavescens is a near global panmictic population. [30]

Modelling of dragonfly flight, energy reserves and wind speeds in the Indian Ocean have suggested that Pantala flavescens performs the longest known non-stop migration compared to body size in the animal kingdom. Specifically the theorised migratory route from Male, Maldives to Kap Hafun, Somalia, is >2500 km long and constitutes travelling 50.7 million body lengths of the dragonfly without any possibility of stopping to rest. [31]

Naming

Common name

The English common names "wandering glider" and "globe skimmer" refer to its migratory behaviour. [6] The German name Wanderlibelle means "migrant dragonfly". In Hong Kong, its name translates as "typhoon dragonfly" as it arrives with or shortly before the seasonal rain. [21] The Japanese name is usubaki-tombo (ウスバキトンボ) which is translated as "yellow dragonfly with delicate wings". Similarly, the South Korean name is '된장잠자리'(translated as "doenjang dragonfly") because its colour is similar to doenjang, the Korean bean paste.

Scientific name

In the scientific name Pantala flavescens, the genus name Pantala means "all wings", alluding to the big and long wings. The specific name comes from the Latin flavescens, meaning "yellowish", and refers to its distinctive golden tint. [6]

The species was first described in 1798 as Libellula flavescens by Fabricius as follows:

L. [flavescens] alis hyalinis: stigmate niveo, corpore flavescente. Habitat in India Dom. Daldorff. Statura praecedentium. Caput flavescens oculis magnis, fuscis. Thorax flavescens, immaculatus. Abdomen compressum, flavescens linea dorsali nigra. Alae albae stigmate marginali niveo.

— Fabricius, Entomologia systematica emendata et aucta Supplement S. 285

The first description of this underlying holotype is in the Zoological Museum of Copenhagen University taken from a female collected from India. In following years there appeared more descriptions with different names. In 1805, Palisot de Beauvois designated a specimen from Nigeria as Libellula viridula. Around 1823 the British entomologist Dale, in an unpublished manuscript, described an allegedly Norfolk-trapped male as Libellula sparing halli, [32] It is now in the Oxford University Museum of Natural History. In 1839, the German entomologist Burmeister named a male collected in Madras as Libellula analis (now in the Zoological Collection of the University of Halle-Wittenberg) and another male from Brazil as Libellula terminalis (now in the Natural History Museum of Vienna.) In 1910, the field was cleared as Richard Anthony Muttkowski recognized that these species were all synonyms. A description made of Sympetrum tandicola (Singh) 1955 from a male collected in the Himalayas and deposited at the Zoological Survey India, Calcutta, was identified as belonging to Pantala flavescens in 1973. [4]

Protection status

The globe skimmer has NatureServe conservation status G5, meaning it is secure (common, widespread and abundant) worldwide. This status was awarded on 30 December 1985. In the United States, it has the national equivalent protection status N5. In Canada, however, it is lower with N4 meaning it is apparently secure – uncommon but not rare but with some cause for long-term concern. Even at this level, it is granted protected status in many states of the US and Canada. [33]

Postage stamps

Due to its wide distribution, the globe skimmer appears on a number of stamps.

On 29 July 1974 Wallis and Futuna published a 45 franc with a dragonfly over a water surface with some plants showing. It has Michel catalog number 257 appearing in a set of insect motifs. On 9 November 1975. The Pitcairn Islands published a 15 cent with a dragonfly flying on a dark blue background. Its Miche number is 154, and it also appeared in an insect collection. [34]

Tuvalu brought out a 10 cent on 25 May 1983 which shows a globe skimmer. The lithographic illustration was designed by J E Cooter. Its Michel number is 190, and it appeared in a set of dragonflies. [35] [36] The representation was limited to the dragonfly with grasses. Botswana published a six-thebe stamp showing the front of a blue dragonfly on a green background. [37]

Wallis and Futuna published another stamp on 4 August 1998, a 36F with the dragonfly shown flying on a yellowish background. It has Michel number 736 and appeared together with other insect motifs. [38]

The latest stamp comes from 2003 and appeared in North Korea. Its value is 15 wŏn and it represents a sedentary globe skimmer on a spike. [39]

Notes

  1. 1 2 3 4 Boudot, J.-P.; Clausnitzer, V.; Samraoui, B.; Suhling, F.; Dijkstra, K.-D.B.; Schneider, W.; Paulson, D.R. (2016). "Pantala flavescens". IUCN Red List of Threatened Species . 2016: e.T59971A65818523. doi: 10.2305/IUCN.UK.2016-3.RLTS.T59971A65818523.en . Retrieved 19 November 2021.
  2. ↑ Fabricius, J.C. (1798). Supplementum Entomologiae Systematicae. Vol. 5. Hafniae : Proft et Storch. pp. 573 [285]. doi:10.5962/bhl.title.65803 – via Biodiversity Heritage Library.
  3. ↑ Paulson, D.; Schorr, M.; Abbott, J.; Bota-Sierra, C.; Deliry, C.; Dijkstra, K.-D.; Lozano, F. (2023). "World Odonata List". OdonataCentral, University of Alabama . Retrieved 14 Mar 2023.
  4. 1 2 Henrik Steinmann (1997). World Catalogue of Odonata (in German). Vol. Band II (Anisoptera). Berlin/New York: de Gruyter. pp. 542f. ISBN   978-3-11-014934-0.
  5. ↑ James William Tutt (1997). "The Entomologist's Record and Journal of Variation" (in German). London: Charles Phipps. pp. 213.{{cite journal}}: Cite journal requires |journal= (help)
  6. 1 2 3 4 Cynthia Berger (March 2004). Dragonflies (Wild Guides) (in German). Mechanicsburg (Pennsylvania): Stackpole Books. pp. 97. ISBN   978-0-8117-2971-0.
  7. 1 2 3 Arnett H. Ross jr. (2000). American Insects. A Handbook of Insects of America North of Mexico (in German). Boca Raton: CRC Press. pp. 128. ISBN   978-0-8493-0212-1.
  8. 1 2 3 4 5 6 "Pantala flavescens Fabricius, 1798". India Biodiversity Portal. Retrieved 2017-02-16.
  9. 1 2 C FC Lt. Fraser (1936). The Fauna of British India, including Ceylon and Burma, Odonata Vol. III. Red Lion Court, Fleet Street, London: Taylor and Francis. pp.  414–416.
  10. 1 2 3 4 5 M. J. Samways, R. Osborn, M.; Osborn, R. (1998). "Divergence in a transoceanic circumtropical dragonfly on a remote island". Journal of Biogeography . 25 (5): 935–946. doi:10.1046/j.1365-2699.1998.00245.x. S2CID   84134147.
  11. ↑ Tim Manolis, Timothy D. Manolis (April 2003). Dragonflies and Damselflies of California (California Natural History Guides (Paperback)). University of California Press. p. 40. ISBN   978-0-520-23567-0.
  12. 1 2 3 Mark Lung, Stefan Sommer. "Pantala flavescens" . Retrieved 9 March 2006.
  13. ↑ Jerrell James Daigle (November 1992). "Florida Dragonflies (Anisoptera): A Species Key to the Aquatic Larval Stages". Technical Series. 12 (1): 23.
  14. ↑ J.C. Abbott. "OdonataCentral: An online resource for the Odonata of North America. Austin, Texas". odonatacentral.com. Retrieved 12 May 2006.[ permanent dead link ]
  15. ↑ Alex Córdoba-Aguilar (2006). "Sperm ejection as a possible cryptic female choice mechanism in Odonata (Insecta)". Physiological Entomology . Online. Early (2): 146. doi:10.1111/j.1365-3032.2005.00498.x. S2CID   84968729.
  16. ↑ Kamilla Schenk, Dagmar Söndgerath (2005). "Influence of egg size differences within egg clutches on larval parameters in nine libellulid species (Odonata)". Ecological Entomology . 30 (4): 456. doi:10.1111/j.0307-6946.2005.00707.x. S2CID   86460786.
  17. ↑ Frank Suhling; Kamilla Schenk; Tanja Padeffke; Andreas Martens (2004). "A field study of larval development in a dragonfly assemblage in African desert ponds (Odonata)". Hydrobiologia . 528 (1–3): 75–85. doi:10.1007/s10750-004-3047-8. S2CID   19164081.
  18. 1 2 Jill Silsby (2001). Dragonflies of the World (in German). Plymouth: The National History Museum. pp. 180. ISBN   978-0-565-09165-1.
  19. ↑ J. H. Hawking, B. A. Ingram (1994). "Rate of larval development of Pantala flavescens (Fabricius) at its southern limit of range in Australia. (Odonata: Libellulidae) (zit. nach Laister)". Odonatologica . 23: 63–68.
  20. ↑ Robert B. Srygley (March 2003). "Wind Drift Compensation in Migrating Dragonflies Pantala (Odonata: Libellulidae)". Journal of Insect Behavior . 16 (2): 217–232. doi:10.1023/A:1023915802067. S2CID   33663287.
  21. 1 2 3 4 Philip S. Corbet (1 August 1999). Dragonflies: Behaviour and Ecology of Odonata (zit. nach Laister) (in German). Colchester: Harley Books. ISBN   978-0-946589-64-7.
  22. ↑ Cannings, R.A. (2014). Chapter 8 The Dragonflies and Damselflies (Odonata) of Canadian Grasslands. In: Arthropods of Canadian Grasslands (Volume 3): Biodiversity and Systematics Part 1 (PDF) (Cárcamo HA, Giberson DJ (Eds) ed.). Ottawa, ON: Biological Survey of Canada. pp. 231–269. ISBN   978-0-9689321-6-2.
  23. ↑ "Pantala flavescens (Wandering Glider)". Odonata Central. The University of Alabama Museums Research and Collections. Retrieved 5 April 2017.
  24. ↑ G. Laister (2005). "Pantala flavescens auf Rhodos, mit einem Überblick über den Status der Art in Europa (Odonata: Libellulidae)". Libellula Supplement . 6: 33–40.
  25. ↑ Gerhard Jurzitza (1978). Unsere Libellen (in German). Franckh. pp. 22. ISBN   978-3-440-04553-4.
  26. ↑ Anderson RC (2009). "Do dragonflies migrate across the western Indian Ocean?". Journal of Tropical Ecology. 25 (4): 347–348. doi:10.1017/s0266467409006087. S2CID   86187189. Archived from the original on 2011-02-02.
  27. ↑ Hobson, K.A.; Anderson, R.C.; Soto, D.X.; Wassenaar, L.I. (2012). "Isotopic Evidence That Dragonflies (Pantala flavescens) Migrating through the Maldives Come from the Northern Indian Subcontinent". PLOS ONE. 7 (12): e52594. Bibcode:2012PLoSO...752594H. doi: 10.1371/journal.pone.0052594 . PMC   3527571 . PMID   23285106.
  28. ↑ Ranjan, Kumar Sanat; Pawar, Amit A.; Roy, Arnab; Saha, Sandeep (2023). "Transoceanic migration network of dragonfly Pantala flavescens: origin, dispersal and timing". Frontiers in Ecology and Evolution. 11. doi: 10.3389/fevo.2023.1152384 . ISSN   2296-701X.
  29. ↑ "Small dragonfly found to be world's longest-distance flyer". Science Daily. Retrieved 3 March 2016.
  30. ↑ Daniel Troast; Frank Suhling; Hiroshi Jinguji; Göran Sahlén; Jessica Ware (2016). "A Global Population Genetic Study of Pantala flavescens". PLoS ONE . 11 (3): e0148949. Bibcode:2016PLoSO..1148949T. doi: 10.1371/journal.pone.0148949 . PMC   4775058 . PMID   26934181.
  31. ↑ Hedlund, Johanna S. U.; Lv, Hua; Lehmann, Philipp; Hu, Gao; Anderson, R. Charles; Chapman, Jason W. (2021). "Unraveling the World's Longest Non-stop Migration: The Indian Ocean Crossing of the Globe Skimmer Dragonfly". Frontiers in Ecology and Evolution. 9: 525. doi: 10.3389/fevo.2021.698128 . hdl: 10871/128538 . ISSN   2296-701X.
  32. ↑ F.C. Fraser (1956). "A restatement of the case of Pantala flavescens (F.) (Odon., Libellulidae) as a casual visitor to Britain". The Entomologist's Monthly Magazine . 92: 347–350.
  33. ↑ "NatureServe Explorer: An online encyclopedia of life". NatureServe. February 2006. Retrieved 25 March 2006.
  34. ↑ "Libellen Briefmarken 1970–1979". Gesellschaft deutschsprachiger Odonatologen. Archived from the original on 12 July 2002. Retrieved 24 March 2006.
  35. ↑ "1983 – Tuvalu Commemorative Stamps". Tuvalu Online. Brian Cannon. Retrieved 24 March 2006.
  36. ↑ "Libellen Briefmarken 1980–1984". Gesellschaft deutschsprachiger Odonatologen. Archived from the original on 17 December 2005. Retrieved 24 March 2006.
  37. ↑ "Dragonfly Stamp of Botswana". Insects on Stamps. Retrieved 24 March 2006.
  38. ↑ "Libellen Briefmarken 1995–1999". Gesellschaft deutschsprachiger Odonatologen. Archived from the original on 9 September 2002. Retrieved 24 March 2006.
  39. ↑ "Libellen Briefmarken 2003–2005". Gesellschaft deutschsprachiger Odonatologen. Archived from the original on 17 December 2005. Retrieved 24 March 2006.

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The blue corporal, also known as little corporal, is a dragonfly in the Libellulidae, or skimmer family. First described as Libellula deplanata by Jules Pierre Rambur in 1842, it is common across much of the eastern United States.

<i>Epitheca bimaculata</i> Species of dragonfly

Epitheca bimaculata, the Eurasian baskettail or two-spotted dragonfly, is a species of dragonfly. It was described by Toussaint de Charpentier in 1825 and initially placed in the genus Libellula. It is the type species of the genus Epitheca.

References

Initial descriptions

Secondary literature

Scientific literature and articles

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