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5 January 2022 The rare and beautiful damselfly Rhinocypha trimaculata rediscovered in Bangladesh: With notes on earlier records, redescription of male and distinguishing characters from R. ignipennis (Odonata: Chlorocyphidae)
Md Kawsar Khan, Matti Hämäläinen
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Abstract

Rhinocypha trimaculata Selys, 1853, is a very rare species, for which only four records have been previously published (twice in the 19th century and twice in the 20th century; most recently recorded in Assam in 1973). The species was rediscovered and photographically documented in Sylhet Division of Bangladesh in 2014. Later, in 2018, two male specimens were collected at the same site. All known earlier records of this species are documented and discussed. The male of R. trimaculata is redescribed and illustrated, including SEM photos of the penis. Diagnostic features, differentiating R. trimaculata and the related Rhinocypha ignipennis Selys, 1879, a montane species from north-eastern India and western Burma, are provided together with photographs of type specimens of both species. Habitats and behaviour of R. trimaculata are discussed. We note that this vulnerable or endangered species appears to be confined to small forest streams in lowland areas within a small range in northeastern India and Bangladesh and requires immediate conservation action to protect it.

Md Kawsar Khan and Matti Hämäläinen "The rare and beautiful damselfly Rhinocypha trimaculata rediscovered in Bangladesh: With notes on earlier records, redescription of male and distinguishing characters from R. ignipennis (Odonata: Chlorocyphidae)," Notulae odonatologicae 9(8), 315-330, (5 January 2022). https://doi.org/10.5281/zenodo.5702949
Received: 5 July 2021; Published: 5 January 2022
JOURNAL ARTICLE
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KEYWORDS
conservation
distribution
endangered species
Further key words. Dragonfly
identification
Zygoptera
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