Orthetrum trinacria
Long Blue Arrow, males
Long Blue Arrow ( Orthetrum trinacria ) is a dragonfly of the family sailing Dragonflies ( Libellulidae ), which is one of the dragonfly ( Anisoptera ).
- 4.1 Literature
- 4.2 References
- 4.3 External links
Features
Construction of Imago
Long Blue Arrow is one with a body length of about 6.5 cm and a wingspan of more than 7 cm of the longest species within the family sailing dragonflies. Females and juvenile males have a yellow ground color. The first three segments of the abdomen ( tummy) of the females form a bubble-like thickening. On the back is on all Abdomensegmenten a continuous black line, which is in each case connected by perpendicular thereto black areas with mostly black colored underside during the transition of the segments. On the eighth and ninth segment merge all the black areas, so those are completely black. The males are also pollinated blue on the bottom. On the also yellow prothorax are black drawings. The legs are on the thigh (femur) yellow with a black line on the outside. The rails ( tibia ) and feet ( tarsi ) are black. The wings are transparent. From the veins of some smaller blood vessels and the Costa loaders are yellowish. The Flügelmal ( pterostigma ) is relatively large and yellow. The Membranula is brown and whitish at the base. The vertex and face are in the females yellow, with the male being black and only at the tip yellow. The blackish occiput is small and preferred. He has a yellow spot back. The compound eyes are almost touching, but in the males a little further apart than in the female.
Dissemination
Long Blue Arrow is disseminated primarily in Africa and Asia Minor. Within Europe, the site of the type currently expanding obvious and currently comprises the southwestern Iberian Peninsula and the islands of Sicily, Sardinia and Malta. In the Mediterranean, he has also yet to find in Cyprus.
Scientific descriptions
First described in 1841 Selys the animal as Libellula trinacria. The male holotype was from Sicily. Next Rambur described in 1842 a female from Senegal as Libellula clathrata and one male from Egypt Libellula bremii. The name L. bremii is because Marquis de BREME put the males described available. Both Selys ' and Ramburs copies are now in the Muséum national d' histoire naturelle in Paris. Selys it was he who in 1850 recognized the synonymy of the three descriptions.