Dysphaea ethela,[1][2] black torrent dart,[3][4] is a species of damselfly in the family Euphaeidae. The insect is named after Frederic Charles Fraser's wife, Ethel Grace Fraser (née Varrall) (1881-1960), a constant companion of his collecting trips in India.[5][6]
It is found in Karnataka and Kerala and Tamil Nadu in Western Ghats.[2] This species is also known from the Eastern Ghats and central India.[7][3][8]
Description
It is a medium sized damselfly with black head and brown-capped pale grey eyes. Its thorax is black, marked with narrow antehumeral and humeral greenish-yellow stripes. There are another yellow stripes on the base of lateral sides. These marks will get obscured by pruinescence in old males. Wings are transparent; but evenly enfumed with brown. Abdomen is black, marked with yellow apical annules up to segment 8. There are yellow lateral stripes up to segment 6. Anal appendages are black.[9]
Female is short and robust; the yellow marks are more broad and vivid. The yellow lateral stripes continued to segment 7. Segment 8 has a narrow and 9 has a broad yellow apical annule, covering dorsal half.[9]
Habitat
It breeds in streams and rivers. Commonly seen perched on reeds or bushes on the river's bank or settled on rocks far inside the stream.[9][5][7][3][4]
- The female laying eggs on a submerged plants in a slow flowing stream
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See also
References
- ↑ Template:World Odonata List
- ↑ 2.0 2.1 Cite error: Invalid
<ref>tag; no text was provided for refs namediucn - ↑ 3.0 3.1 3.2 Dysphaea ethela Fraser, 1924. India Biodiversity Portal. Retrieved 2017-03-07.
- ↑ 4.0 4.1 Dysphaea ethela Fraser, 1924. Odonata of India, v. 1.00. Indian Foundation for Butterflies. Retrieved 2017-03-07.
- ↑ 5.0 5.1 A Survey of the Odonate (Dragonfly) Fauna of Western India and Descriptions of Thirty New Species{{#if:|, {{{last}}}}(1924)
- ↑ Catalogue of individuals commemorated in the scientific names of extant dragonflies, including lists of all available eponymous species-group and genus-group names. International Dragonfly Fund (IDF) - Report({Template:Date).
- ↑ 7.0 7.1 Dragonflies and Damselflies of Peninsular India - A Field Guide{{#if:Subramanian|, Subramanian}(2005)
- ↑ Atlas of Odonata (Insecta) of the Western Ghats, India{{#if:|, {{{last}}}}. Zoological Survey of India(2018). ISBN 9788181714954
- ↑ 9.0 9.1 9.2 The Fauna of British India, including Ceylon and Burma, Odonata Vol. II{{#if:|, {{{last}}}}. Taylor and Francis(1934)