Crocothemis servilia

Crocothemis servilia - female

Bandar Baru Bangi, Selangor

Dragonflying at Denai Sungai Kebangsaan @ JPS Hulu Langat

I did an Odonata survey along Denai Sungai Kebangsaan @ JPS Hulu Langat (or known as Denai Sungai Langat) in Bandar Baru Seksyen 3, Selangor (Figure 1) on 11 April 2026, from10 am to 1 pm. The Denai is easily accessed by Persairan Universiti, the road from Bandar Baru Bangi heading to the main entrance of Universiti Kebangsaan Malaysia. The length of the whole Denai (from point A to point B; Figure 1) is roughly 3 km, and it is facilitated by tarred walkway (actually it is a cycling track). The walkway is just along the river bank. The start point of the Denai (point A; Figure 2; 2°55'35"N 101°46'32"E) is next to Persairan Universiti. A small parking space is available at the start point of the Denai (Figure 2). Point A oversees the pond at Bandar Baru Bangi Seksyen 3.The end of the Denai is a dead end (point B; see Figure 3; 2°57'10"N 101°47'6"). A nice open marsh (point C; Figure 4; 2°56'10"N 101°46'50"E) is located about 600 m from the start point, and it is a nice spot to watch dragonflies. A few chairs and a hut are erected along the walkway for visitors (Figures 7 & 8). Fishing enthusiasts frequent the Denai to fish at Sungai Langat. The Denai is also frequented by cyclists. In the 3-hour of survey, I manage to spot 14 species Odonata species, 1 was damselfly and 13 were dragonflies. Most of the odonates were spotted at the marsh (point C).  

Here are the Odonata species spotted during the field survey along the Denai on 11 April 2026

Family Coenagrionidae

Ischnura sengalensis

Family Libellulidae

Acisoma panorpoides

Aethriamanta gracilis

Brachydiplax chalybea

Crocothemis servilia

Hydrobasileus croceus

Neurothemis fluctuans

Orthetrum chrysis

Orthetrum sabina

Orthetrum testaceum

Pantala flavescens

Rhyothemis triangularis

Rhyothemis variegata phyllis

Tramea transmarina

Figure 1. Google map showing the location of Denai Kebangsaan @ JPS Hulu Langat

Figure 2. The start point of the Denai (point A; see Figure 1)

Figure 3. The end point of the Denai (point B; see Figure 1)

Figure 4. Open marsh (point C; see Figure 1) by the walkway 

Figure 5. A river monitoring station by the walkway 

Figure 6. A section of the walkway 

Figure 7. A stone chair by the walkway

Figure 8. A resting hut  by the walkway

Figure 9. Sungai Langat

Dragonflying at Bandar Baru Bangi Seksyen 3

I did an Odonata survey at a pond in Bandar Baru Seksyen 3, Selangor (GPS coordinate: 2°56'0"N 101°46'28") on 4 April 2026, from 10 am to 1 pm. The weather was good during the field survey. The pond is located next to Sungai Langat, and it is easily accessed by Persairan Universiti, the road from Bandar Baru Bangi heading to the main entrance of Universiti Kebangsaan Malaysia (Figure 1). The pond is well vegetated with one side faced by the beautiful residence houses (Figure 2). Another corner of the pond faces Persiaran Universiti (Figure 3). Basically, you are able to view one corner of the pond from Persiaran Universiti (on the traffic from Bandar Baru Bangi to Universiti Kebangsaan Malaysia main entrance). The pond is frequented by visitors for fishing (Figure 4). Next to the pond is a spacious parking are (Figure 5). Walking down from the parking area is kid playground (Figure 6). Walking further from the kid playground is the beautiful pond. I manage to spot 12 species Odonata species, 3 were damselflies and 9 were dragonflies. Brachythemis contaminata, Crocothemis servilia and Acisoma panorpoides were spotted in abundance during the field survey.  

Here are the Odonata species spotted during the field survey at the pond on 4 April 2026

Family Coenagrionidae

Agriocnemis femina

Ceriagrion auranticum

Ischnura senegalensis

Family Libellulidae

Acisoma panorpoides

Aethriamanta gracilis

Brachydiplax chalybea

Brachythemis contaminata

Crocothemis servilia

Hydrobasileus croceus

Neurothemis fluctuans

Rhyothemis triangularis

Rhyothemis variegata phyllis

Figure 1. Google map showing the location (marked with a blue asterisk) of the pond at Bandar Baru Bangi Seksyen 3

Figure 2. Panoramic view of the pond (one section) at Bandar Baru Bangi Seksyen 3

Figure 3. Another section of the pond at Bandar Baru Bangi Seksyen 3. The far end structure is the bridge of Persairan Universiti.

Figure 4. A guy is fishing at the pond

Figure 5. A spacious parking area (free parking) next to the pond

Figure 6. A kid playground next to the pond 

Hydrobasileus croceus

Hydrobasileus croceus - female

egg laying; the eggs are in yellowish green colour

Bandar Baru Bangi, Selangor

Aethriamanta gracilis

Aethriamanta gracilis - in tandem

Bandar Baru Bangi, Selangor 

Rhyothemis triangularis

Rhyothemis triangularis - female

Bandar Baru Bangi, Selangor 

 

Preying - Acisoma panorpoides feeding on Ischnura sengalensis

Acisoma panorpoides (male) is feeding on Ischnura senegalensis (male)

Bandar Baru Bangi, Selangor

Crocothemis servilia

Crocothemis servilia - male

the red colour has not fully developed yet

Bandar Baru Bangi, Selangor

Acisoma panorpoides

Acisoma panorpoides - young male

Kajang, Selangor

Agriocnemis nana

Agriocnemis nana - male

Kampung Bukit Lada, Chenor, Pahang 

Nannophya pygmaea

Nannophya pygmaea - male

UKM Bangi, Selangor

Lathrecista asiatica

Lathrecista asiatica - male

UKM Bangi, Selangor

Agrionoptera insignis

Agrionoptera insignis - male

UKM Bangi, Selangor

Tetrathemis hyalina

Tetrathemis hyalina - male

Sungai Durian, Lintang, Perak

Vestalis amoena

Vestalis amoena - male

Sungai Durian, Lintang, Perak

Neurobasis chinensis

Neurobasis chinensis - male

Sungai Durian, Lintang, Perak

Tetrathemis platyptera

Tetrathemis platyptera - male

Sungai Durian, Lintang, Perak

Dragonflying at Sungai Durian, Lintang, Perak

Sungai Durian flows through Kampung Sungai Durian, Lintang, Perak. The Perak state government develops an ecotourism project at Kampung Sungai Durian - Lata Gerik Kampung Sungai Durian. One of the attractions to Lata Gerik Kampung Sungai Durian is the Sungai Durian (see the photos below). The water of the stream is clean. I visited to Lata Gerik Kampung Sungai Durian on 19 February 2026 to survey the Odonata. I managed to record 26 species of Odonota (11 species are damselflies and 15 species are dragonflies) at Lata Gerik Kampung Sungai Durian (see the species list below).

Photos of Sungai Durian

Odonata species list of Lata Gerik Kampung Sungai Durian (recorded on 19 February 2026)

Damselflies

Argiocnemis rubesences

Copera marginipes

Dysphaea dimidiata

Heliocypha perforata

Libellago lineata

Mortonagrion aborense

Neurobasis chinesis

Prodasineura humeralis

Pseudagrion pruinosum

Pseudocopera ciliata

Vestalis amoena

Dragonflies

Acisoma panorpoides

Cratilla metallica

Lathrecista asiatica

Megalogomphus sumatranus

Neurothemis fluctuans

Neurothemis fulvia

Onychothemis culminicola

Orthetrum chrysis

Orthetrum luzonicum

Orthetrum testaceum

Tetrathemis hyalina

Tetrathemis platyptera

Trithemis aurora

Trithemis festiva

Zygonyx iris

Heliocypha perforata

Heliocypha perforata - young male

Sg Durian, Lintang, Perak

Tetrathemis platyptera

Tetrathemis platyptera - mating

Sg Durian, Lintang, Perak