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Photography with cameras Nikon D3x, Nikon D300, Canon 50D Image editing with Photoshop |
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Keyword: Dragonflies | Overview - a b c d e f g h i j k l m n o p q r s t u v w x y z | Seite 1 von 3 1 2 3 | | | |
| Southern hawker | | The southern hawker (Aeshna cyanea), also known as the blue darner belongs to the genus hawker dragonflies (Aeshna), in the order Odonata (dragonflies and damselflies), the suborder dragonflies (Epiprocta), the infraorder Anisoptera, and the family hawkers (Aeshnidae). The species is widespread and common in the western Palearctic from Scandinavia to North Africa. In Central Europe, the southern hawker is very common, and their surv... | | |
| | ...The basal spots on their hindwings are yellow or yellow-orange. The wingspan of the scarlet dragonfly is 55 - 70 mm. Between the wing approaches a light narrow dorsal line can be detected. The pterostigma is yellow or orange-yellow to brown. Scarlet dragonflies can easily be confused with some darter species, however, they are larger and have a flatter abdomen than the darters. Young and female scarlet dragonflies are similar in colouration to female black-lined skimmers(Orthetrum cancellatum). The latter, however, have agrey to bluish marking on their wings. Female scarlet dragonflies also have a vertically protruding ovipositor. The legs are strongly built and are used to catch prey. | | |
| | | Dragonflies | | Dragonflies (Odonata) are an order in the sub-class winged insects (Pterygota) in the class insects (Insecta). There are approximately 4700 species worldwide, around 85 of which are found in Europe. Some examples of dragonfly species are: banded demoiselle (C... | | |
| | ...n the water using a special tissue in their rectum. When the larvae are fully developed some time in June, they creep out of the water along a plant stem and shed their outer skin (excuvia). When their wings have dried, they fly off as adult dragonflies. The southern hawker seems to have no fear of humans. Birds pose the biggest threat as they prey on the larvae when they are on their way into the water and especially like to attack the juvenile dragonflies when they have just hatched from the excuvia. | | |
| | Scarlet dragonfly | | The scarlet dragonfly (Crocothemis erythraea), or common scarlet-darter, is a species in the order dragonflies (Odonata), the suborder Epiprocta, the infraorder dragonflies (Anisoptera), the superfamily Libelluloidea, the family Libellulidae, and the genus Crocothemis. Subspecies of the scarlet dragonfly are Crocothemis erythraea chaldaeorum and Crocothemis erythraea erythraea. | | |
| | Black-lined skimmer | | The black-lined skimmer (Orthetrum cancellatum), also called the black-tailed skimmer, is a species in the order dragonflies and damselflies (Odonata), the suborder dragonflies (Anisoptera), the superfamily Libelluloidea, the family skimmers (Libellulidae), the subfamily Libellulinae, and the genus Orthetrum. A scientific synonym for this species is Libellula cancellata. Subspecies of Orthetrum cancellatum are as follows: ... | | |
| The large red damselfly is non endangered but is nonetheless protected like all dragonflies. It is found in the lowlands and in the mountains and prefers habitats with standing or slow flowing waters such as streams, ditches, marshes, and lakes or ponds with dense marginal vegetation where it can hide. The large red damselfly appears from ...
... prefers habitats with standing or slow flowing waters such as streams, ditches, marshes, and lakes or ponds with dense marginal vegetation where it can hide. The large red damselfly appears from April to August and is one of the earliest species of dragonflies which can be observed in the course of the year. It is diurnal and feeds on insects. | | |
| | Ruddy darter | | The ruddy darter (Sympetrum sanguineum) belongs to the genus darters (Sympetrum), in the order dragonflies, the family skimmers (Libellulidae) and the subfamily Sympetrinae. It is commonly encountered in Europe. | | |
| | ...A number of species hunt on the water surface.
Birds pose the biggest threat to spiders. However amphibians, reptiles and bats also eat spiders. Some spider species feed exclusively on other spiders. Other natural enemies are: wasps, ants, true dragonflies, small-headed flies, Nematodes and Acarina. | | |
| | ...ts or forest edges. They prey on flying insects, capturing them while flying at low levels and the males may show considerable perseverance. Southern hawkers defend their territory at the water against conspecifics as well as other species of dragonflies. | | |
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