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:ŽƵƌŶĂůŽĨdŚƌĞĂƚĞŶĞĚdĂdžĂͮǁǁǁ͘ƚŚƌĞĂƚĞŶĞĚƚĂdžĂ͘ŽƌŐͮϮϲ^ĞƉƚĞŵďĞƌϮϬϭϱͮϳ;ϭϭͿ͗ϳϳϵϱʹϳϴϬϰ Ù¦ÊÄ¥½®ÝÄÃݽ¥½®Ý;/ÄÝã͗KÊÄãͿʥ㫠ÄÊÙã«ÝãÙÄÙ¦®ÊÄʥĦ½Ý«ó®ã«¥®òÄó®ã®ÊÄÝ ãÊã«KÊÄã¥çÄʥĦ½Ý« ISSN 0974-7907 (Online) ISSN 0974-7893 (Print) ^«ÊÙãÊÃÃçÄ®ã®ÊÄ D͘<ĂǁƐĂƌ<ŚĂŶ KWE^^ Department of Biochemistry and Molecular Biology, School of Life Sciences, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh [email protected] ďƐƚƌĂĐƚ͗KĚŽŶĂƚĂǁĞƌĞƐƵƌǀĞLJĞĚŝŶŽŶĞƌĞƐĞƌǀĞĨŽƌĞƐƚ͕ƚǁŽŶĂƟŽŶĂů KĚŽŶĂƚĂ;ĚƌĂŐŽŶŇŝĞƐĂŶĚĚĂŵƐĞůŇŝĞƐͿĂƌĞŐŽƌŐĞŽƵƐ ƉĂƌŬƐ͕ ŽŶĞ ĐŽ WĂƌŬ͕ ŽŶĞ ůĂŬĞ ĂŶĚ ŽŶĞ hŶŝǀĞƌƐŝƚLJ ĐĂŵƉƵƐ ŝŶ ƚŚĞ ĂƋƵĂƟĐ ŝŶƐĞĐƚƐ ĚŝƐƚƌŝďƵƚĞĚ ƚŚƌŽƵŐŚŽƵƚ ƚŚĞ ǁŽƌůĚ͘ ŶŽƌƚŚĞĂƐƚĞƌŶƌĞŐŝŽŶŽĨĂŶŐůĂĚĞƐŚĨƌŽŵDĂƌĐŚϮϬϭϰƚŽDĂƌĐŚϮϬϭϱ͘ ƚŽƚĂů ŽĨ ϲϰ ƐƉĞĐŝĞƐ ŽĨ ŶŝƐŽƉƚĞƌĂ ĂŶĚ LJŐŽƉƚĞƌĂ ďĞůŽŶŐŝŶŐ ƚŽ ϰϭ KĚŽŶĂƚĞƐ ĂƌĞ ŚŝŐŚůLJ ƐƉĞĐŝĮĐ ƚŽ ƚŚĞŝƌ ŶŝĐŚĞ͕ ĚĞƉĞŶĚ ŐĞŶĞƌĂƵŶĚĞƌƐĞǀĞŶĨĂŵŝůŝĞƐǁĞƌĞƌĞĐŽƌĚĞĚ͘ŵŽŶŐƚŚĞŵϰϱƐƉĞĐŝĞƐ heavily on water bodies for feeding and breeding and and 19 genera were new records for the study area. Two species of ŶŝƐŽƉƚĞƌĂ͕ŝ͘Ğ͕͘Anax indicus>ŝĞŌŝŶĐŬ͕ϭϵϰϮĂŶĚGynacantha khasiaca ĂƌĞ ĞdžƚƌĞŵĞůLJ ƐĞŶƐŝƟǀĞ ƚŽ ƚŚĞ ĂůƚĞƌĂƟŽŶ ŽĨ ƚŚĞ ůŽĐĂůĞ DĂĐ>ĂĐŚůĂŶ͕ ϭϴϵϲ͕ ĂŶĚ ƚŚƌĞĞ ƐƉĞĐŝĞƐ ŽĨ LJŐŽƉƚĞƌĂ ŝ͘Ğ͕͘ Matrona ;ƌŽǁůĞLJΘ:ŽŚŶƐŽŶϭϵϴϮ͖ƵƚůĞƌϮϬϬϴ͖^ŝůǀĂĞƚĂů͘ϮϬϭϬͿ͘ nigripectus Selys, 1879, Agriocnemis kalinga EĂŝƌ Θ ^ƵďƌĂŵĂŶŝĂŶ͕ ,ĞŶĐĞ͕ ĚƌĂŐŽŶŇŝĞƐ ĂŶĚ ĚĂŵƐĞůŇŝĞƐ ĂƌĞ ĐŽŶƐŝĚĞƌĞĚ ϮϬϭϰ͕ĂŶĚ Prodasineura laidlawii &ŽƌƐƚĞƌ͕ϭϵϬϳǁĞƌĞƌĞĐŽƌĚĞĚĨŽƌƚŚĞ ĮƌƐƚƟŵĞĨƌŽŵĂŶŐůĂĚĞƐŚ͘ indicators of wetland health. Besides, they are important elements of the food chain; many birds feed <ĞLJǁŽƌĚƐ͗ Agriocnemis kalinga, Anax indicus, ŶŝƐŽƉƚĞƌĂ͕ĂŶŐůĂĚĞƐŚ͕ on them while odonates predate on other small insects Gynacantha khasiaca, Matrona nigripectus, Odonata diversity, Prodasineura laidlawii, LJŐŽƉƚĞƌĂ͘ ůŝŬĞŵŽƐƋƵŝƚŽĞƐ͕ŵŽƚŚƐ͕ďƵƩĞƌŇŝĞƐĂŶĚĐŽŶƐƉĞĐŝĮĐĂŶĚ ŚĞƚĞƌŽƐƉĞĐŝĮĐKĚŽŶĂƚĂ;ŚĞƐŚŝƌĞĞƚĂů͘ϮϬϬϱͿ͘dŝůůĚĂƚĞ͕ ϲϬϱϬƐƉĞĐŝĞƐŽĨKĚŽŶĂƚĂďĞůŽŶŐŝŶŐƚŽϲϬϬŐĞŶĞƌĂŚĂǀĞ ďĞĞŶƌĞĐŽƌĚĞĚƚŚƌŽƵŐŚŽƵƚƚŚĞtŽƌůĚ;sŝĐŬϮϬϬϮͿ͘ Bangladesh possess an enormus area of wetlands including rivers, lakes and ponds. Moreover, in monsoon heavy rainfall creates many temporary water bodies which hold water for more than three months. The Anax indicus NOT DATA LEAST NEAR CRITICALLY EXTINCT VULNERABLE ENDANGERED EXTINCT EVALUATED DEFICIENT CONCERN THREATENED ENDANGERED IN THE WILD NE DD LC NT VU EN CR EW EX K/͗ŚƩƉ͗ͬͬĚdž͘ĚŽŝ͘ŽƌŐͬϭϬ͘ϭϭϲϬϵͬ:Ždd͘Žϰϯϭϰ͘ϳϳϵϱͲϴϬϰͮŽŽĂŶŬ͗ƵƌŶ͗ůƐŝĚ͗njŽŽďĂŶŬ͘ŽƌŐ͗ƉƵď͗ϴϬϮϴϮϯͲϭϮϰϲͲϰϮϰͲϴͲϮϬϬϴϰϳϴϭ ĚŝƚŽƌ͗<͘͘^ƵďƌĂŵĂŶŝĂŶ͕ŽŽůŽŐŝĐĂů^ƵƌǀĞLJŽĨ/ŶĚŝĂ͕<ŽůŬĂƚĂ͕/ŶĚŝĂ. ĂƚĞŽĨƉƵďůŝĐĂƟŽŶ͗Ϯϲ^ĞƉƚĞŵďĞƌϮϬϭϱ;ŽŶůŝŶĞΘƉƌŝŶƚͿ DĂŶƵƐĐƌŝƉƚĚĞƚĂŝůƐ͗DƐηŽϰϯϭϰͮZĞĐĞŝǀĞĚϭϭƉƌŝůϮϬϭϱͮ&ŝŶĂůůLJĂĐĐĞƉƚĞĚϬϳƵŐƵƐƚϮϬϭϱ ŝƚĂƟŽŶ͗ Khan, M.K. ;ϮϬϭϱͿ͘ƌĂŐŽŶŇŝĞƐĂŶĚĚĂŵƐĞůŇŝĞƐ;/ŶƐĞĐƚĂ͗KĚŽŶĂƚĂͿŽĨƚŚĞŶŽƌƚŚĞĂƐƚĞƌŶƌĞŐŝŽŶŽĨĂŶŐůĂĚĞƐŚǁŝƚŚĮǀĞŶĞǁĂĚĚŝƟŽŶƐƚŽƚŚĞKĚŽŶĂƚĂĨĂƵŶĂ of Bangladesh. Journal of Threatened Taxaϳ;ϭϭͿ͗ϳϳϵϱʹϳϴϬϰ; ŚƩƉ͗ͬͬĚdž͘ĚŽŝ͘ŽƌŐͬϭϬ͘ϭϭϲϬϵͬ:Ždd͘Žϰϯϭϰ͘ϳϳϵϱͲϴϬϰ ŽƉLJƌŝŐŚƚ͗ © Khan ϮϬϭϱ͘ƌĞĂƟǀĞŽŵŵŽŶƐƩƌŝďƵƟŽŶϰ͘Ϭ/ŶƚĞƌŶĂƟŽŶĂů>ŝĐĞŶƐĞ͘:ŽddĂůůŽǁƐƵŶƌĞƐƚƌŝĐƚĞĚƵƐĞŽĨƚŚŝƐĂƌƟĐůĞŝŶĂŶLJŵĞĚŝƵŵ͕ƌĞƉƌŽĚƵĐƟŽŶĂŶĚ ĚŝƐƚƌŝďƵƟŽŶďLJƉƌŽǀŝĚŝŶŐĂĚĞƋƵĂƚĞĐƌĞĚŝƚƚŽƚŚĞĂƵƚŚŽƌƐĂŶĚƚŚĞƐŽƵƌĐĞŽĨƉƵďůŝĐĂƟŽŶ͘ &ƵŶĚŝŶŐ͗Self funded. ŽŶŇŝĐƚŽĨ/ŶƚĞƌĞƐƚ͗dŚĞĂƵƚŚŽƌĚĞĐůĂƌĞƐŶŽĐŽŵƉĞƟŶŐŝŶƚĞƌĞƐƚƐ͘ ĐŬŶŽǁůĞĚŐĞŵĞŶƚ͗/ĂŵǀĞƌLJƚŚĂŶŬĨƵůƚŽEŽƉƉĂĚƵŶDĂŬďƵŶ͕^ŚĂŶƚĂŶƵ:ŽƐŚŝĂŶĚ<͘͘^ƵďƌĂŵĂŶŝĂŶĨŽƌƚŚĞŝƌŚĞůƉŝŶŝĚĞŶƟĨLJŝŶŐĂĨĞǁƐƉĞĐŝĞƐĂŶĚŝŶƉƌĞƉĂƌŝŶŐ ƚŚĞŵĂŶƵƐĐƌŝƉƚ͘/ĂŵĂůƐŽƚŚĂŶŬĨƵůƚŽ^ŚĂĮƋƵĞ,ĂŝĚĞƌŚŽǁĚŚƵƌLJǁŚŽŚĞůƉĞĚǁŝƚŚƚŚĞƌĞƐĞĂƌĐŚĂƌƟĐůĞƐĂŶĚŐĂǀĞǀĂůƵĂďůĞƐƵŐŐĞƐƟŽŶƐĚƵƌŝŶŐƚŚĞƐƚƵĚLJƉĞƌŝŽĚ͘ /ĂŵĂůƐŽƚŚĂŶŬĨƵůƚŽ:ƵŶĂĞĞĚŚŵĞĚĂŶĚDĚ^ĂŝĨƵů/ƐůĂŵĨŽƌƚŚĞŝƌŚĞůƉĚƵƌŝŶŐŵĂŶƵƐĐƌŝƉƚƉƌĞƉĂƌĂƟŽŶ͘ 7795 Odonata of the northeastern region of Bangladesh Khan temporary water resources can act as breeding places ĐŽŶƚĂŝŶƐĨŽƵƌƉƌŽƚĞĐƚĞĚĂƌĞĂƐ͕ŝ͘Ğ͕͘>ĂǁĂĐŚĂƌĂEĂƟŽŶĂů ĨŽƌ ŵĂŶLJ KĚŽŶĂƚĂ ƐƉĞĐŝĞƐ ;ŚŽǁĚŚƵƌLJ Θ DŽŚŝƵĚĚŝŶ WĂƌŬ͕ ^ĂƚĐŚĂƌŝ EĂƟŽŶĂů WĂƌŬ͕ <ŚĂĚŝŵŶĂŐŽƌ EĂƟŽŶĂů ϭϵϵϰͿ͘/ŶĂĚĚŝƟŽŶƚŽƚŚŽƐĞƉĞƌŵĂŶĞŶƚĂŶĚƚĞŵƉŽƌĂƌLJ WĂƌŬ ĂŶĚ ZĞŵĂͲ<ĂůĞŶŐĂ tŝůĚůŝĨĞ ^ĂŶĐƚƵĂƌLJ͖ ƚŚƌĞĞ ĞĐŽ stagnant wetlands, a good number of waterfalls and ƉĂƌŬƐ͕ŝ͘Ğ͕͘DĂĚŚĂďŬƵŶĚĂĐŽWĂƌŬ͕dŝůĂŐĂƌĐŽWĂƌŬĂŶĚ ƐƚƌĞĂŵƐ ĞdžŝƐƚ͕ ƉĂƌƟĐƵůĂƌůLJ ŝŶ ƚŚĞ ŶŽƌƚŚͲĞĂƐƚ ĂŶĚ ƚŚĞ ŽƌƐŚŝũŽƌĂĐŽWĂƌŬ͘ůƐŽ͕ƚŚĞŶŽƌƚŚĞĂƐƚĞƌŶƌĞŐŝŽŶŝƐǁĞůů south-east part of the country. This diverse range of ŬŶŽǁŶĨŽƌŝƚƐůĂƌŐĞůĂŬĞƐͶdĂŶŐƵĂƌ,ĂŽƌ͕,ĂŬĂůƵŬŝ,ĂŽƌ͕ water bodies along with many tropical forest patches has Baikkar Bill; rivers—Surma, Kushiara, Kalindi and Khoai; generated a suitable habitat for many Odonata species. ǁĂƚĞƌĨĂůůƐͶDĂĚŚŽďŬƵŶĚĂĂŶĚ,ĂŵŚĂŵ͘WƌĞǀŝŽƵƐůLJ͕Ă Despite that ambient milieu, ironically, scanty research total of 31 species of Odonata of which 17 species of has been carried out to document the Odonata fauna ĚƌĂŐŽŶŇŝĞƐĂŶĚϭϰƐƉĞĐŝĞƐŽĨĚĂŵƐĞůŇŝĞƐǁĞƌĞƌĞĐŽƌĚĞĚ of Bangladesh (Begum et al. 1977; Biswas et al. 1980; ĨƌŽŵ ƚŚĞ ĂƌĞĂ ;ŚŽǁĚŚƵƌLJ Θ DŽŚŝƵĚĚŝŶ ϮϬϭϭͿ͘ dŚĞ ŚŽǁĚŚƵƌLJΘŬŚƚĞƌƵnjnjĂŵĂŶϭϵϴϯ͖ŚŽǁĚŚƵƌLJΘDŝĂŚ ƉƌĞƐĞŶƚƐƚƵĚLJŚĂǀĞĂĚĚĞĚϰϱƐƉĞĐŝĞƐŶĞǁƚŽƚŚŝƐƌĞŐŝŽŶ ϭϵϴϵ͖ŚŽǁĚŚƵƌLJΘDŽŚŝƵĚĚŝŶϭϵϵϯ͖EŽŵƵƌĂΘůĂŵ ŽĨ ǁŚŝĐŚ ĮǀĞ ƐƉĞĐŝĞƐ ĂƌĞ ƌĞĐŽƌĚĞĚ ĨŽƌ ƚŚĞ ĮƌƐƚ ƟŵĞ ϭϵϵϱ͖<ŚĂŶϮϬϭϱͿ͘dŚĞŵŽƐƚĐŽŵƉƌĞŚĞŶƐŝǀĞǁŽƌŬǁĂƐ from Bangladesh. The present paper also updates the ĐĂƌƌŝĞĚŽƵƚďLJŚŽǁĚŚƵƌLJΘDŽŚŝƵĚĚŝŶ;ϮϬϭϭͿ͕ǁŚĞƌĞ ĐŚĞĐŬůŝƐƚĚŝǀĞƌƐŝƚLJ͕ĚŝƐƚƌŝďƵƟŽŶĂŶĚƐƚĂƚƵƐŽĨKĚŽŶĂƚĂŝŶ ƚŚĞƌĞƐĞĂƌĐŚĞƌƐŚĂĚĚŽĐƵŵĞŶƚĞĚϵϲƐƉĞĐŝĞƐŽĨKĚŽŶĂƚĂ the northeastern region. from the eastern region of Bangladesh. The northeastern region of Bangladesh is DãÙ®½ÝÄDã«ÊÝ ĂĚŵŝŶŝƐƚƌĂƟǀĞůLJ ƵŶĚĞƌ ^LJůŚĞƚ ĚŝǀŝƐŝŽŶ͘ dŚĞ ĚŝǀŝƐŝŽŶ ^ƚƵĚLJĂƌĞĂ ĐŽǀĞƌƐ ŵŽƌĞ ƚŚĂŶ ϭϮ͕ϲϯϲƐƋ͘Ŭŵ͘ ĂŶĚ ĐŽŶƐŝƐƚƐ ŽĨ ĨŽƵƌ dŚĞ ƐƚƵĚLJ ǁĂƐ ĐĂƌƌŝĞĚ ŽƵƚ ŝŶ Ɛŝdž ĚŝīĞƌĞŶƚ ĂƌĞĂƐ ĚŝƐƚƌŝĐƚƐ;^LJůŚĞƚ͕DĂƵůĂǀŝďĂnjĂƌ͕^ƵŶĂŵŐŽŶŐĂŶĚ,ĂďŝŐŽŶũͿ ŽĨ ƚŚĞ ŶŽƌƚŚĞĂƐƚĞƌŶ ƌĞŐŝŽŶ ;ĂĚŵŝŶŝƐƚƌĂƟǀĞůLJ ƵŶĚĞƌ which are surrounded by the Indian states of Meghalaya, ^LJůŚĞƚ ĚŝǀŝƐŝŽŶͿ ĨƌŽŵ DĂƌĐŚ ϮϬϭϰ ƚŽ DĂƌĐŚ ϮϬϭϱ ;&ŝŐ͘ dƌŝƉƵƌĂ ĂŶĚ ƐƐĂŵ͘ dŚŝƐ ŶĂƚƵƌĂůůLJ ĞŶƌŝĐŚĞĚ ƌĞŐŝŽŶ ϭͿ͘ dŚĞ ƐƚƵĚLJ ĂƌĞĂ ŝŶĐůƵĚĞƐ ƚǁŽ ŶĂƟŽŶĂů ƉĂƌŬƐ͕ ŝ͘Ğ͕͘ &ŝŐƵƌĞϭ͘ƌĞĨĞƌĞŶĐĞŵĂƉŽĨƚŚĞŶŽƌƚŚĞĂƐƚƌĞŐŝŽŶ;^LJůŚĞƚĚŝǀŝƐŝŽŶͿŽĨĂŶŐůĂĚĞƐŚǁŝƚŚƚŚĞŚŝŐŚůŝŐŚƚĞĚƐƚƵĚLJĂƌĞĂ ϳϳϵϲ Journal of Threatened Taxa | www.threatenedtaxa.org | 26 September 2015 | 7(11): 7795–7804 Odonata of the northeastern region of Bangladesh Khan Lawachara National park of Maulavibazar District and are the most abundant species from different locations Satchari National Park of Habigonj District. The survey except Rajkandi Reserve Forest and Lawachara National was also carried out in Rajkandi Reserve Forest and Park where Neurothemis intermedia Rambur, 1842 was Tilagor Eco Park. Also, an extensive survey was carried the predominant species. The present study added 45 out in Shahjalal University of Science and Technology species (24 Anisoptera and 21 Zygoptera) to the known (SUST) campus of Sylhet District and one opportunistic Odonata fauna of the north-east which is now 76 species survey was executed in Madhobpur Lake. The average (Appendix 1). Also, five Odonata species (two Anisoptera temperature of these study areas varies from 10–36 0C. and three Zygoptera) were newly added to the current Odonata fauna of Bangladesh. The newly recorded Sampling of odonates species are discussed along with their taxonomic status. The odonates were surveyed by walking opportunistically through the forest paths, near Anax indicus Lieftinck, 1942 (Aeshnidae) (Image 1a) streams, lakes, ponds and grasslands associated with Anax is a large dragonfly genus of 29 species and the wetlands from 08.00–17.00 hr. The specimens were distributed throughout the World (Tsuda 2000; Schorr photographed for various identification features by & Paulson 2012). Anax indicus is the second Anax Canon 600D camera using 55–250 mm lens. Voucher species recorded from Bangladesh after Anax guttatus specimens were collected, wherever possible, using (Chowdhury & Mohiuddin 2011). One Anax indicus male insect sweeping net and deposited in the Department of was sighted from the Shahjalal University of Science and Biochemistry and Molecular Biology, Shahjalal University Technology (SUST) campus on 16 April 2014. Previously of Science and Technology, Sylhet, Bangladesh. The the species was known from India, Nepal, Pakistan, Sri odonates were identified with the help of keys provided Lanka and Thailand (Mitra 2010). The present record by Fraser (1933, 1934, 1936), Asahina (1967), Lahiri extends its distribution to Bangladesh also. Anax (1987), Mitra (2002), Subramanian (2005), and Nair guttatus and Anax indicus are closely related species. (2011). Odonata taxonomy and binomial names However, identification of the species is possible by provided by Subramanian (2009) were followed except the close comparison of the abdominal segments for Aristocypha Laidlaw, 1950 instead of Rhinocypha and anal appendages. The observed male specimen Rambur, 1942. Onychargia atrocyana Selys, 1865 was appropriately fit the description provided by Lieftinck, placed in the family of Platycnemididae instead of 1955 “The two pairs of postjugal spots are broadly fused Coenagrionidae as proposed by Dijkstra et al. 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