Coeliccia octogesima

Coeliccia octogesima - tandem pair

UKM Bangi, Selangor

Orthetrum glaucum vs Orthetrum luzonicum

It is quite a challenge for laymen to tell apart Orthetrum glaucum from Orthetrum luzonicum because both (matured males) are light blue in colour. Actually, we are still able to distinguish them if we look at them carefully. Orthetrum glaucum is slightly larger than Orthetrum luzonicum. The hindwing base of Orthetrum glaucum has dark patch, but this is absent in Orthetrum luzonicum. Apart from that, the abdomen of Orthetrum luzonicum is slightly slender if compared to Orthetrum glaucum.

Orthetrum luzonicum (male; left) and Orthetrum glaucum (male; right)

UKM Bangi, Selangor

Archibasis rebeccae

I saw this Archibasis rebeccae female performed an act to grab a small spider resting on its net. The Archibasis rebeccae approached the spider net skillfully so that it was not stuck herself on the net of the spider. Hovering at the same level as the spider (the spider net was at the vertical position), she suddenly pushed forward her legs to grab the spider and then retreated herself away from the vertical spider net so that she did not crush into the spider net.  

Archibasis rebeccae - female

feeding on a small spider

UKM Bangi, Selangor

Teinobasis ruficollis

Teinobasis ruficollis - male

Kuala Selangor Nature Park, Selangor

Lyriothemis biappendiculata

Lyriothemis biappendiculata - male

Lanjak Entimau Wildlife Sanctuary, Sarawak

Xiphiagrion cyanomelas

Xiphiagrion cyanomelas

being preyed - the male has lost his thorax and head and the female has lost her abdomen

Imbak Canyon, Sabah

Pseudagrion pruinosum

I witnessed partial submerging oviposition of Pseudagrion pruinosum. I believe in rare occasion it will do a total submerging oviposition.

Pseudagrion pruinosum - oviposition

UKM Bangi, Selangor

P/S:

I searched the internet for information on the egg laying of Pseudagrion pruinosum. So, it has been recorded that Pseudagrion pruinosum does total underwater oviposition with the male individual also down into the water. Click here for the paper about the egg laying of Pseudagrion pruinosum. 

Prodasineura notostigma

Prodasineura notostigma - mating

UKM Bangi, Selangor

 

Pseudagrion pruinosum

Pseudagrion pruinosum - tandem pair

UKM Bangi, Selangor

 

Prodasineura humeralis

Prodasineura humeralis - egg laying

UKM Bangi, Selangor

 

Libellago lineata

Libellago lineata 

left = female; right = male

UKM Bangi, Selangor

 

Camacinia gigantea

Camacinia gigantea - female

UKM Bangi, Selangor

Neurothemis fluctuans - Preyed

Neurothemis fluctuans (male) is preyed by a water spider

UKM Bangi, Selangor

Tetrathemis platyptera

Tetrathemis platyptera - mating

Ulu Muda, Kedah

Oviposition of Vestalis amoena

I observed the mating of a pair Vestalis amoena by the shore of a stream (Sg Durian). Right after the mating, the female was laying eggs on the leaf substrate in the stream. The male was perching at another leaf to guard the female.  

Vestalis amoena

left bottom = female; right top = male

Sg Durian, Lintang, Perak

Lestes praemorsus

Lestes praemorsus - female

a failed larval emergence - left hindwing is still in the wing sheath of the exuvia

UKM Bangi, Selangor

Indothemis carnatica

Indothemis carnatica - mating

UKM Bangi, Selangor

Genitalia of Orthetrum testaceum and Orthetrum chrysis

Orthetrum testaceum and Orthetrum chrysis are red dragonflies. Click here to see the slight difference of colour marking between these two species. Their genitalia are also between (see below). 

Left side lateral view of genitalia. A is Orthetrum testaceum and B is Orthetrum chrysis.

Tramea transmarina

Tramea transmarina - male

Cherating, Pahang

Orthetrum glaucum

Orthetrum glaucum - female

Taman Eko-Rimba Sekayu, Terengganu

Pseudagrion pruinosum

Pseudagrion pruinosum - male

UKM Bangi, Selangor

Indothemis carnatica

Indothemis carnatica - flying in tandem

UKM Bangi, Selangor

 

Larva - Indaeschna grubaueri

Indaeschna grubaueri - female

Taman Pertanian Sekayu, Terengganu

click here to see the adult of Indaeschna grubaueri

Indocnemis orang

Indocnemis orang - female

larval emergence

Taman Eko-Rimba Sekayu, Terengganu

 

Orthetrum luzonicum

Orthetrum luzonicum - young male

UKM Bangi, Selangor

 

Crocothemis servilia

Crocothemis servilia - female

UKM Bangi, Selangor

 

Agriocnemis nana

Agriocnemis nana - female

UKM Bangi, Selangor

 

Onychargia atrocyana

Onychargia atrocyana - a very young male

UKM Bangi, Selangor

 

Agriocnemis nana

Agriocnemis nana - male

UKM Bangi, Selangor

 

Lyriothemis biappendiculata

Lyriothemis biappendiculata - young male

UKM Bangi, Selangor

 

Rhinagrion elopurae

Rhinagrion elopurae - female

Imbak Canyon, Sabah

 

Elattoneura aurantiaca

Elattoneura aurantiaca - female

Hutan Simpan Sg Karang, Selangor

 

Podolestes buwaldai

Podolestes buwaldai - female

Hutan Simpan Sg Karang, Selangor

 

Potamarcha congener

Potamarcha congener - female

Kg Bukit Lada, Pahang

 

Neurothemis fulvia

Neurothemis fulvia - female

Kg Bukit Lada, Pahang

 

Euphaea masoni

Euphaea masoni - male

Hulu Besut, Terengganu

 

Libellago aurantiaca

Libellago aurantiaca - male

Hulu Besut, Terengganu

 

Zygonyx iris

Zygonyx iris - male

Lata Belatan, Terengganu

 

Rhinagrion viridatum

Rhinagrion viridatum - male

Hutan Lipur Jeram Linang, Kelantan

 

Cratilla metallica

Cratilla metallica - female

Tasik Chini, Pahang

 

Indocnemis orang

Indocnemis orang - male

Taman Eko-Rimba Sekayu, Terengganu

 

Euphaea ochracea

Euphaea ochracea - male

Sungai Durian, Lintang, Perak

 

Vestalis amethystina vs Vestalis amoena

Peninsular Malaysia has three Vestalis species - Vestalis amethystina, Vestalis amoena and Vestalis gracilis. Vestalis gracilis is easily told apart from the previous two species based on the thoracic marking. However, both Vestalis amethystina and Vestalis amoena are similar to each other in overall marking. The only character used to distinguish both the species is their anal appendages.

Vestalis amethystina - male

Hutan Simpan Gunung Tebu, Terengganu

Vestalis amoena - male

Taman Negeri Rompin, Pahang

The anal appendages of Vestalis amethystina and Vestalis amoena are different (see images below). Close inspection on the anal appendages is needed for proper species identification. 

anal appendages of Vestalis amethystina. top = lateral view, middle = dorsal view, and bottom = ventral view

anal appendages of Vestalis amoena. top = lateral view, middle = dorsal view, and bottom = ventral view

Orolestes wallacei

Orolestes wallacei - female

Krau Wildlife Sanctuary, Pahang

 

Pseudagrion williamsoni

Pseudagrion williamsoni - male

Tasik Chini, Pahang

 

Agrionoptera insignis

Agrionoptera insignis - female

UKM Bangi, Selangor