Erythrodiplax atroterminata
| Erythrodiplax atroterminata | ||||||||||||
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| Erythrodiplax atroterminata | ||||||||||||
| Friedrich Ris , 1911 |
Erythrodiplax atroterminata is a species of dragonfly from the subfamily Sympetrinae . The species was described in 1911 by Friedrich Ris as a subspecies of the Erythrodiplax connata andraised to a speciesby Donald Joyce Borror in 1942 and classified in the Basalis group . The larva was only described in 2008 by Analía Garré , Javier Muzón and Diego Martin Ardohain . The species has been found in Chile , Argentina , Paraguay , Uruguay and the Brazilian states of São Paulo , Santa Catarina and Rio Grande do Sul .
features
Colored males of the Erythrodiplax atroterminata have a blue-black body with a shiny metallic forehead . The males' abdomen, which measures around 20 millimeters, often looks as if it were covered with a fine dust. In females, the abdomen is slightly shorter with an average of 18 millimeters and, like in young males, brown. On the side, females, like young males, have a dark brown or black stripe that runs just above the side keel and is interrupted in the front area of segments four to six. In some individuals these lateral stripes are only weakly pronounced on the first segments. On the back there is another dark brown to black stripe on the eighth and ninth segments. The trunk is yellowish to brownish in females and young males and has a dark brown ante humeral stripe . The forehead is brownish.
Except for the dark brown to black colored wing tips and a small spot on the wing base, the wings are transparent. The spot at the base is yellow in young adults , in older animals it becomes dark reddish brown. With an average of 24 millimeters, the hind wings of the males are almost one millimeter longer than those of the females. In both sexes, the wing mark measures just over three millimeters.
Similar species
The species is similar to the other representatives of the Basalis group, but can be easily demarcated by the clearly defined spots on the wing tips.
credentials
- ^ A b c d Donald Joyce Borror - A Revision of the Libelluline Genus Erythrodiplax (Odonata) p. 157ff , The Ohio State University, Columbus, 1942.
- ↑ Analía Garré , Javier Muzón and Diego Martin Ardohain : Description of the final instar larvae of Erythrodiplax atroterminata Ris and E. corallina (Brauer) (Odonata: Libellulidae) . In: Zootaxa . 1896, 2008, pp. 45-50.
- ^ Charles W. Heckman: Encyclopedia of South American Aquatic Insects: Odonata - Anisoptera . Springer Netherlands, 2006, ISBN 978-1-4020-4802-9 , pp. 259 .