Friday, May 31, 2019

[Entomology • 2019] Ceriagrion chromothorax • A New Species of Damselfly (Odonata: Zygoptera: Coenagrionidae) from Sindhudurg, Maharashtra, India


Ceriagrion chromothorax 
 Joshi & Sawant, 2019


ABSTRACT
Ceriagrion chromothorax sp. nov. is described from Western Ghats, India, based on six males and one female collected from Sindhudurg District of Maharashtra. 

 Keywords: Damselfly, Devgad, new species, Sindhudurg Marsh Dart, taxonomy, Western Ghats

Ceriagrion chromothorax sp. nov.:
 (a) & (b) holotype male (NCBS-BB921) in situ | (c) male from Wada Village (not collected), 18.viii.2018.© Dattaprasad Sawant. 


Males of: (a) Ceriagrion chromothorax sp. nov. | (b) C. coromandelianum | (c) C. indochinense. 

Ceriagrion chromothorax sp. nov.
 Common name: Sindhudurg Marsh Dart.

Ceriagrion chromothorax sp. nov. is similar to C. coromandelianum, and C. indochinense, the latter has not been recorded from India but could possibly occur in the northeast. The above three species share the character of yellow or olivaceous thoracic and abdominal coloration, but they differ with respect to the shape of their anal appendages, structure of prothorax and mesostigmal plate. Ceriagrion fallax, occurs in northern India but not in western India, it is similar to the three above-mentioned in terms of the yellow abdominal coloration, but is readily distinguishable using the following characters: a) S7–10 extensively black, b) shape of posterior lobe of prothorax and mesostigmal plates, and c) shape of anal appendages.
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Etymology: The name ‘chromothorax’ is given for the bright yellow (=chromothoracic coloration.


Shantanu Joshi and Dattaprasad Sawant. 2019. Ceriagrion chromothorax sp. nov. (Odonata: Zygoptera: Coenagrionidae) from Sindhudurg, Maharashtra, India. Journal of Threatened Taxa. 11(7); 13875–13885 DOI: 10.11609/jott.4753.11.7.13875-13885