Anax guttatus vs Anax panybeus - Anal Appendages

Anax guttatus and A. panybeus are quite similar to each other. In fact when I caught a specimen of A. guttatus a few years back, I labelled it as A. guttatus. My mistake was immediately pointed out by Dr. A.G. Orr when he inspected my specimen during his visit to Malaysia.

One important character to distinguish A. guttatus from A. panybeus is their anal appendages. The anal appendages of A. panybeus is more massive and larger than that of A. guttatus. Of course, the shape of anal appendages for both the species is also slightly different.


left is A. guttatus and right is A. panybeus

Larval Emergence of Neurothemis fluctuans

I witnessed the larval emergence of female Neurothemis fluctuans.


This larva (image above) was photographed at 14:30 hour. It is very matured, and it is going to emerge very soon......


After eight hours later around 23:00 hour, this happened (see images below)! Showing below are a series of three photos taking at the most critical moment - the whole adult insect is emerging out from the exuvia. This critical moment only took less than 5 seconds! In order to take record this critical moment with camera, one has to wait by the emerging larva patiently.

Mortonagrion aborense - Immatured

The immatured Mortonagrion aborense has red colour, and it looks more appealing compared to the matured individuals..........

Comparison: Anax guttatus vs Anax panybeus

Two Anax species are recorded in Peninsular Malaysia - Anax guttatus and A. panybeus. The anal appendages and the length of abdominal segment 3 are the main characters to differentiate these two species. However, I am showing you here the differences of blue marking on the thorax and dorsal abdominal segments 1-3 for both the species.


left: Anax guttatus; right: Anax panybeus

A Large Cordulid Larva

This large matured cordulid larva is living in my little aquarium..... Anybody wanna guess what species is this?

Finally It Has Emerged!

The aeshnid larva that I have been talking about (click here to see the larva at F0 stage) has finally emerged! This morning I saw the beautiful newly emerged adult aeshnid not far from the exuvia. It is a male Anax panybeus!


exuvia of Anax panybeus
newly emerged Anax panybeus

Going to Emerge.............

This aeshnid larva measuring up to 55 mm from head to tail (really large) has been out of water in the evening for the last two days. Its wing cases have hardened, and it looks very mature. I'm sure that it is going to emerge very soon....... It is most likely an Anax guttutas..... I keep my fingers cross.

Odonata Checklist of Sg Durian, Perak

I visited Sg Durian, Lintang, Perak for second time a few days ago to survey the odonate diversity. I managed to add six more species to the previous checklist. Now the total number of odonate species recorded for Sg Durian is 30.




Odonata Checklist for Sg Durian, Lintang, Perak

Family Calopterygidae
Neurobasis chinensis
Vestalis amoena

Family Chlorocyphidae
Heliocypha perforata
Heliocypha biforata
Libellago lineata

Family Euphaeidae
Dysphaea dimidiata
Euphaea impar
Euphaea ochracea

Family Megapodagrionidae
Rhinagrion mima

Family Coenagrionidae
Agriocnemis femina
Argiocnemis rubescens
Onychargia atrocyana
Mortonagrion aborense
Pseudagrion pruinosum

Family Platycnemididae
Copera ciliata
Copera marginipes

Family Protoneuridae
Prodasineura humeralis
Prodasineura collaris

Family Gomphidae
Ictinogomphus decoratus
Paragomphus capricornis

Family Libellulidae
Aethriamanta gracilis
Brachydiplax chalybea
Neurothemis fluctuans
Onychothemis culminicola
Orthetrum chrysis
Orthetrum luzonicum
Orthetrum testaceum
Trithemis aurora
Trithemis festiva
Zygonyx iris

Pseudagrion pruinosum in Wheel

Lately, I had a chance to take some shots on a wheel pair of Pseudagrion pruinosum. In Peninsular Malaysia, it is hard to spot female of P. pruinosum though a good number of male may be present at the site. To bump into a wheel pair of P. pruinosum is something to be happy about, I guess.

A Close Encounter - Rhyothemis plutonia

Rhyothemis plutonia is a rare dragonfly species of Peninsular Malaysia. In 6-7 years of field experience, I have only spotted two individuals at two different locations. A few days ago, I had a very close encounter of R. plutonia (my second time to bump into an individual of R. plutonia). Of course, I made countless shots on this male R. plutonia. Taking photograph on black dragonfly is always a challenging task, and most of the photographs ended up as bad shots. Nevertheless, I did make some satisfied shots (on my own stadard :)).