Libellula incesta
| Libellula incesta | ||||||||||||
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Libellula incesta |
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| Scientific name | ||||||||||||
| Libellula incesta | ||||||||||||
| Hagen , 1861 |
LIBELLULA INCESTA is a dragonfly - Art of the genus Libellula of the subfamily Libellulinae . Their distribution area extends over the east of the USA and Canada .
features
Construction of the Imago
The animal reaches a length of 45 to 56 millimeters, of which 30 to 36 millimeters are on the abdomen . Males and females have brown or ocher-colored faces that become darker to metallic black towards the top.
The front of the thorax is brown with a whitish to yellowish stripe in the middle. The sides have no stripes, just a short, triangular, dark brown stripe that runs slightly downwards under the forewing. The hind wings reach a length of 35 to 43 millimeters and are transparent and have dark wing tips. Sometimes a black spot appears on the nodus . The legs are black, only brown at the base on the underside. In young animals, the abdomen is yellow, slender and slightly reduced. It is generally strongly tapered towards the back and has the typical dark stripes on the back and on the sides. The eighth segment is laterally thickened in females. The thorax and the entire abdomen of both sexes are colored dark steel blue.
Construction of the larva
The larvae have eyes located in the center of the face and a long abdomen that tapers towards the end. The edge of the unpaired front part of the labium , the so-called prementum, is smooth.
Similar species
L. flavida has amber-colored side edges of the wings, L. vibrans is slightly larger and has a white face, basal wing stripes and a dark point at the nodus. L. axilena has white hind wings, silver shimmering areas on the thorax and a paler colored abdomen. Cannaphila insularis has a pale face and the hind wings are clearly narrowed.
Way of life
The animals live in swampy ponds , lakes and slowly flowing rivers with muddy subsoil in forests . The males like to sit on tall, sunlit blades of grass and plants. Apart from the mating season, the females are rarely on the water. The pairing only takes about 30 seconds. Then the eggs are thrown one by one into the water or on the bank under the supervision of the male. The females are fertile from the start, even if they still have the yellow, juvenile color.
credentials
- ↑ a b http://odonatacentral.bfl.utexas.edu/fieldguide/species.asp?TaxaID=228 ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. (June 9, 2006)
- ↑ Jerrell James Daigle: Florida Dragonflies (Anisoptera): A Species Key to the Aquatic Larval Stages . In: Technical Series . 12, No. 1, November 1992, p. 23.
