Long blue arrow
| Long blue arrow | ||||||||||||
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Long blue arrow, male |
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| Scientific name | ||||||||||||
| Orthetrum trinacria | ||||||||||||
| ( Selys , 1841) |
Long blue arrow ( Orthetrum trinacria ) is a type of dragonfly from the family of the sail dragonflies (Libellulidae), which belongs to the large dragonflies (Anisoptera).
features
Construction of the Imago
Long blue arrow, with a body length of approx. 6.5 cm and wingspan of over 7 cm, is one of the longest species within the sailing dragonfly family . Females and juvenile males have a yellow basic color. The first three segments of the female's abdomen form a bubble-shaped thickening. On the back there is a continuous black line on all abdominal segments, which is connected to the largely black underside at the transition of the segments by black areas running perpendicular to them. On the eighth and ninth segments, all the black areas merge so that they are completely black. The males are also dusted blue on the underside. There are black drawings on the prothorax , which is also yellow . The legs are yellow on the thigh (femur) with a black line on the outside. The rails (tibia) and the feet (tarsi) are black. The wings are transparent. Some of the veins and the Costa veins are yellowish. The wing mark ( pterostigma ) is relatively large and yellow. The membranes are brown and whitish at the base. The vertex and face are yellow in females, but black in males and yellow only at the tip. The blackish occiput is small and protruding. There is a yellow stain on the back. The compound eyes almost touch, but are a little further apart in the male than in the female.
distribution
Long blue arrow is found primarily in Africa and Asia Minor . Within Europe, the area of the species is currently expanding and currently includes the southwestern Iberian Peninsula as well as the islands of Sicily , Sardinia and Malta . In the Mediterranean region, it can also be found on Cyprus .
Scientific descriptions
Selys first described the animal as Libellula trinacria in 1841 . The male holotype came from Sicily. Next, in 1842 , Rambur described a female from Senegal as Libellula clathrata and a male from Egypt as Libellula bremii . The name L. bremii comes from the fact that Marquis de Brème made the described males available. Both Selys' and Rambur's specimens are now in the Muséum national d'histoire naturelle in Paris . It was also Selys who recognized the synonymy of the three descriptions as early as 1850.
swell
literature
- K.-DB Dijkstra: Field Guide to the Dragonflies of Britain and Europe , British Wildlife Publishing 2006, ISBN 0-953139948
- RR Askew: The Dragonflies of Europe (revised edition), Harley Books, England 2004, ISBN 0-946589755
- Gerhard Jurzitza: The Kosmos-Dragonfly Guide , Franckh-Kosmos Verlags GmbH & Co., Stuttgart 2000, ISBN 3-440-08402-7
credentials
- ↑ Jules Pierre Rambur - Histoire naturelle des insectes: Névroptères [p. 83f], Librairie Encyclopédique de Roret, 1842, [1]
- ^ Henrik Steinmann - World Catalog of Odonata (Volume II Anisoptera) [p. 426], de Gruyter, 1997, ISBN 3-11-014934-6
Web links
- Orthetrum trinacria in Fauna Europaea
- LibellenWissen.de
- Orthetrum trinacria inthe IUCN 2013 Red List of Threatened Species . Posted by: Boudot, J.-P., Clausnitzer, V., Samraoui, B., Suhling, F. & Dijkstra, K.-DB, 2012. Accessed February 22, 2014.