Erythrodiplax laurentia
| Erythrodiplax laurentia | ||||||||||||
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| Scientific name | ||||||||||||
| Erythrodiplax laurentia | ||||||||||||
| Borror , 1942 |
Erythrodiplax laurentia is a species of dragonfly from the subfamily Sympetrinae . The species is common in the Guayana region. The species was first described in 1942 by Donald Joyce Borror using an animal from Saint-Laurent-du-Maroni in French Guiana . The placewhere the holotype wascollectedwas also the inspiration for the name of the species.
features
With the exception of the face, the male is black. In the female, on the other hand, the thorax is dark green and brownish and the abdomen is brownish black. The abdomen measures between 18.0 and 20.5 millimeters in males - around 21.0 millimeters in females. In the males the occiput is dark brown above and becomes more yellowish towards the rear. The vertex is metallic blue. The color of the forehead is dark brown-blackish. However, it becomes metallic blue towards the top and yellowish blue towards the sides. While the labium and the upper lip ( labrum ) are dark yellowish green or brown, the adjoining front plate ( clypeus ) is dark greenish brown. The transparent hind wings of the males vary in length between 21.5 and 24.5 millimeters. Those of the females are about 25 millimeters long. There is a brownish black spot at the base of the wings. The wings are slightly brownish at the tips. The pterostigma measures between 2.6 and 2.9 millimeters in males.
Similar species
Most similar to Erythrodiplax laurentia are the species Erythrodiplax unimaculata and Erythrodiplax kimminsi . A reliable distinction can only be made on the basis of the penis structure . A first clue is the usually much larger wing spot in E. unimaculata .
supporting documents
- ^ A b c Donald Joyce Borror : A Revision of the Libelluline Genus Erythrodiplax (Odonata) , The Ohio State University, Columbus, 1942