Antidythemis
| Antidythemis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Antidythemis | ||||||||||||
| Kirby , 1889 |
Antidythemis is a dragonfly genus of the subfamily Panta Linae , about 1889 by William Forsell Kirby a first description was written. The distribution area extends mainly over the Amazon region.
features
Antidythemis species are relatively large and reach a body length of 48 to 50 millimeters. Her pterothorax is reddish dark brown, more rarely with a bluish green tinge, her abdomen is dark brown to black in color. The wings are transparent except for a larger brown spot at the base of the hind wings. The pterostigma extends over four to five cells and is comparatively long, which allows a differentiation from the very similar genus Tramea , because there the pterostigma is significantly shorter. A characteristic that can only be found in this genus is the pair of thorns, which are arranged on the distal segment of the vesica spermalis .
Systematics
The genus was first described by Kirby in 1889 using the antidythemis trameiformis described for the first time in the same publication . Today the genus includes a second species with Antidythemis nigra , although it is disputed whether these are really two different species or whether there are only two different ages of the same species, as Jürg De Marmels suggested in 1993.
Individual evidence
- ^ A b c Garrison, von Ellenrieder , Louton: Dragonfly Genera of the New World . [S. 225], The Johns Hopkins University Press, 2006, ISBN 0801884462