Oeneis nevadensis
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Oeneis nevadensis , male |
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| Oeneis nevadensis | ||||||||||||
| ( C. Felder & R. Felder , 1867) |
Oeneis nevadensis is a butterfly ( butterfly ) from the family of Nymphalidae (Nymphalidae).
features
butterfly
The wingspan of the moth is 57 to 63 millimeters. This makes them one of the largest Oeneis species. Fore and hind wings have a yellow-brown to red-brown color on the upper side. In the submarginal region of the forewing upper side, two black eye-spots usually stand out. In the males, there is a darkened area parallel to the front edge , which is formed from scented scales and extends from the wing root to just before the apex . The upper side of the hind wings has a black eye-spot, but this can also be completely absent. The undersides of the forewings are yellow-brown, the upper side ocular spots shine through. A blackish marbling dominates the underside of the hind wing, which is interrupted by a few white spots on the edge.
Caterpillar
Adult caterpillars are usually greenish in color and have whitish and brownish side lines. Red-brown specimens with dark brown vertical stripes also appear. The body is forked at the end.
Similar species
Oeneis macounii has fewer white drawing elements on the underside of the hind wing. The males also lack the dark scented scents on the upper side of the forewings. The range of this species also extends further east, so that there is no geographical overlap between the two species.
Distribution and occurrence
The main habitat of the species is the Cascade Range from southern British Columbia to northern California . There is also a deposit on the southern tip of Vancouver Island . Oeneis nevadensis inhabits mountainous areas, stony meadows, rubble and scree slopes and rocky gorges.
Subspecies
The following subspecies are distinguished:
- Oeneis nevadensis navadensis (C. Felder & R. Felder, 1867) in southern British Columbia, Washington , Oregon , Nevada and northern California
- Oeneis nevadensis gigas (Butler, 1868) on Vancouver Island
- Oeneis nevadensis iduna (Edwards, 1874) in coastal areas of California
Way of life
The adults fly in one generation from late May to mid-July, depending on the altitude. The food plants of the caterpillars are currently unknown. Different grasses are accepted for breeding. Since the species occurs in mountainous areas with only short periods of warmth and nutrient-poor vegetation, it takes two years to develop. The caterpillars overwinter first in the second or third instar and for the second time in the fifth instar. Because of this development cycle, the moths appear more numerous in even years.
supporting documents
Individual evidence
- ↑ Butterflies and Moths of North America http://www.butterfliesandmoths.org/species/Oeneis-nevadensis
- ^ A b c d James A. Scott (1986): The Butterflies of North America: A Natural History and Field Guide . Stanford, California: Stanford University Press. ISBN 0-8047-2013-4 , pp. 247/248
- ↑ Distribution and subspecies http://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/nymphalidae/satyrinae/oeneis/index.html#nevadensis
- ↑ Butterflies of America http://butterfliesofamerica.com/L/t/Oeneis_nevadensis_a.htm
- ↑ Vladimir Lukhtanov, Ulf Eitschberger: The Butterflies of the World: Nymphalidae V, Oeneis . Verlag Goecke & Evers, 2000. ISBN 978-3931374808
literature
- James A. Scott (1986): The Butterflies of North America: A Natural History and Field Guide. Stanford, California: Stanford University Press. ISBN 0-8047-2013-4 , pp. 247/248
Web links
- eol.org - Encyclopedia of Life