Journal of Threatened Taxa | www.threatenedtaxa.org
| 26 August 2021 | 13(9): 19383–19385
ISSN 0974-7907 (Online) | ISSN 0974-7893
(Print)
https://doi.org/10.11609/jott.5459.13.9.19383-19385
#5459 | Received 09 October 2019 | Final
received 30 May 2021 | Finally accepted 23 July 2021
A new record of the Emerald
Striped Spreadwing Lestes
viridulus Rambur, 1842 (Zygoptera:
Lestidae) from Nepal
Manoj Sharma
Central Department of Zoology,
Tribhuvan University, Kirtipur, Kathmandu, Nepal.
munu.nepal50@gmail.com
Editor: Raymond J. Andrew, Hislop
College, Nagpur, India. Date of publication:
26 August 2021 (online & print)
Citation: Sharma, M. (2021). A new record of the Emerald
Striped Spreadwing Lestes
viridulus Rambur, 1842 (Zygoptera:
Lestidae) from Nepal. Journal of Threatened Taxa 13(9): 19383–19385. https://doi.org/10.11609/jott.5459.13.9.19383-19385
Copyright: © Sharma 2021. Creative Commons Attribution
4.0 International License. JoTT allows unrestricted use, reproduction, and
distribution of this article in any medium by providing adequate credit to the
author(s) and the source of publication.
Funding: Self-funded.
Competing interests: The author
declares no competing interests..
Acknowledgements: I am very much thankful to Ms.
Manisha Sharma, Mr. Chandra Kant Sharma, and Ms. Sita
Devi Kandel for their kind support during the field survey and manuscript
preparation.
Dragonflies and Damselflies are
amphibiotic insects found almost all over the world in subtropical to temperate
regions depending on freshwater ecosystems. Globally, 6,332 species are
reported (Schorr & Paulson 2020) of which 178 species are so far reported
from Nepal (Kalkman et al. 2020). Including the
recently recorded Ishnura nursei and Agriocnemes
femina (Aryal 2019;
Conniff et al. 2020). Lestes is represented by
only two species in Nepal, L. dorothea Fraser,
1924 and L. praemorsus (Vick 1989; Thapa 2015).
Nepal, however, has many regions and locations which have not yet been surveyed
for odonate fauna.
Study area: The survey was
carried out in Swathi (27.650 N & 83.657 E, 132 m), a region under Sunwal municipality of Nawalparasi,
situated in the southern Terai of central Nepal
(Figure 1). The average monthly temperature and rainfall (September 2020) was
28°C and 112mm.
Data collection: The
odonatological survey was carried out mainly in the rice fields and their edges
20–23 September 2019. Observations were undertaken between 0800–1700 h. The
specimens were photographed with a camera (Nikon D3400 with EOS 18–55 mm lens)
and the GPS location was recorded. The species were identified using standard
literature (Fraser 1933; Subramanian 2009; Nair 2011). Only one male
specimen of Lestes viridulus was collected, for further laboratory
investigation to confirm its identification.
The next three days were reserved for observation in the same site and
it was carried out to confirm and search for other possible habitats of Lestes viridulus.
Lestes viridulus Rambur, 1842 (Image 1 A–E)
The medium-sized damselfly has
been reported and described for the first time from Nepal on the basis of its
morphological features. Both male and female were observed and photographed. The
abundance was high at dusk as the species is crepuscular in nature. Females
were found in the paddy fields and only two males were seen basking on a blade
of grass on the edge of an artificial pond around the paddy field. The occurrence of Lestes
viridulus is not surprising in Nepal as it has
been well recorded from neighboring countries of
India, China, and Bangladesh.
Early distribution range: Lestes viridulus Rambur,
1842 is confined to peninsular India (Fraser 1933). This species has been
recorded from agricultural fields and temporary water bodies in tropical
regions (Payra & Tiple
2019) and has been reported from India (Bihar, Chandigarh, Himachal Pradesh,
Madhya Pradesh, Maharashtra, Punjab, and Uttar Pradesh), Bangladesh (Biswas et
al. 1990), and Thailand (Hamalainen & Pinratana 1999).
Agriocnemis femina (Brauer,
1868) (Image 1 F–I)
Both the male and female of Agriocnemis femina were
observed at the study site. An immature male was chasing a mature male of the
same species at an irrigation canal while a female (red form-heteromorph) was
perching on the stem of an aquatic plant. A green form female was perching on a
leaf blade of a plant. Abundance and distribution was high at irrigation in the
low lands of tropical areas (Nair 2011; Joshi & Kunte
2014). Both mature and immature males were observed in a mating wheel position.
Non-contact guarding by males was observed during oviposition on leaves of
aquatic plants. This species shows various morphological forms in different
stages. The female shows red (heteromorph) and green form (androchrome)
and the male is greenish-blue at an immature stage and with maturity gains a bluish-white
pruinescence (Nair 2011). This is the record of A.
femina in a new distribution area.
Early distributional range:
Australia, Bangladesh, Bhutan, Brunei, China, Guam, Hong Kong, India,
Indonesia, Japan, Laos, Malaysia, Micronesia, Myanmar, northern Mariana Island,
Palau, Philippines, Singapore, Solomon Island, Sri Lanka, Thailand, Timor-Leste,
and Vietnam. In Nepal it was reported from Parsa
Wildlife Reserve, the Terai region of central Nepal
and Haldi Bari, Jhapa
district, eastern Nepal (Conniff et al. 2020).
Ischnura nursei (Morton, 1907) (Image 1J)
The distribution region of Ischnura nursei in
Nepal has been extended to Swathi, in central Nepal. Eight male individuals of I.
nursei were photographed while they were basking
on a blade of grass in the edge of a local pond (27.559 N & 83.657 E). Females
were not seen. The presence of I. nursei in
this location denotes that it is common in the tropical regions of central
Nepal.
Early distributional range:
India, Pakistan, Iran, the U.A.E., Bangladesh, Oman, and Nepal (Dumont et al.
2011; Nair 2011; Zia et al. 2011; Feulner & Judas
2013; Kunz 2015; Aryal 2019). In Nepal it was
recorded from Jagadishpur lake and Baanganga river of Kapilvastu
district (Aryal 2019).
For
figure & image - - click here
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