Last Updated on Wednesday, 28 June, 2023 10:12:38 PM
Dragonflies of Borneo > Family Libellulidae > Genus Orthetrum > Orthetrum testaceum
Family: Libellulidae
Genus: Orthetrum
Species: Orthetrum testaceum
A common red dragonfly of Borneo
Found in China, Hainan, Indonesia, Myanmar, Malaysia, Philippines, Thailand,
Taiwan, Viet Nam
Orthetrum testaceum
| MALE | FEMALE |
 Male body length 45mm Front wing 36mm Female body length 45mm Front wing 37mm |
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 Egg mass of a female dragonfly Orthetrum testaceum 2023-06-23 BUKIT GEMOK |
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An aging female Orthetrum testaceum
Body color patterns of an aging female Orthetrum testaceum is so different to a
young female. These differences in degree of:
1) Body color turn grayish green , where as a young female is bright brown.
2) Wing color turn tan color, where a young male and female all have clear
wings.
Female turn greenish color as they age.
This is an aging female with white powder (white pruinescence) developed at the
lower part of body. Segment 8, 9 and 10 stained with mud that dried up
indication she had experienced laying eggs on water not long ago.
Matured male Orthetrum testaceum
Body parts of a male dragonfly
Male Orthetrum testaceum
Head parts of a dragonfly
RELATED TOPICS
The compound eyes of dragonflies
Dragonflies and damselflies have large compound eyes that can see in all directions. When the compound eye is magnified several hundred times, each individual facet (ommatidium) is shown to be hexagonal in shape.
Ovipositor (Vulvar Lamina)
of Female Dragonflies and Damselflies
Female dragonflies have either one of the two method of depositing eggs from
the abdomen:
1- using Ovipositor Structure
2- using Vulvar Lamina
Male do not have an ovipositor. Instead male dragonfly and damselfly have appendages.
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GO FURTHER FLORA Borneo has 150 species of wild fig trees. Most of them are found in forests of Sabah. FISHERIES Prawn farming is a main commercial activities in Tawau. Spawners from Tawau are graded the best in Malaysia. For decades, Tawau has been exporting high-grade tiger prawns to several countries such as Korea, Japan, Taiwan, China, Vietnam, Singapore, Egypt and Australia. |
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Damselflies of Borneo |
