Trithemis aurora

 
 
Common Name:
Crimson Marsh Glider, Crimson Dropwing, Dawn Dropwing
Odonata
Order:
Odonata
Suborder:
Anisoptera
Family:
Libellulidae
Genus:
Trithemis
Species:
T. aurora
Species Description
Trithemis aurora (Burmeister, 1839), the Crimson Marsh Glider, is a species of dragonfly in the family Libellulidae. This dragonfly is small but beautiful. In males, the hindwing is 25 to 27 mm long and the total body length ranges from 32 to 35 mm. The eyes of the male are red and the thorax and abdomen are almost luminous pink. The base of the hindiwng is tinted amber brown and the wing veins are red. The female is light brown with black markings on the sides of the abdomen. Immature males are like the female but lack the black markings on the sides of the abdomen. Also, when viewed from above, the abdomen of immature male is broader (dorso-ventrally flattened) whereas that of the female is straight-sided and narrower.

It is a medium sized dragonfly that is commonly found in weedy tanks and ponds, marshes, channels, and slow flowing streams and rivers in the lowlands and mid-hills. It breeds in streams, rivers, canals, ponds and tanks. It is found commonly and widely distributed in the Oriental region throughout the year. The male of the species is distinctly different from the female.

The male has a reddish brown face, with eyes that are crimson above and brown on the sides. The thorax is red with a fine, purple pruinescence. The abdomen, the base of which is swollen, is crimson with a violet tinge. The wings are transparent with crimson venation and the base has a broad amber patch. The wing spots are a dark reddish-brown and the legs are black.

The female has an olivaceous or bright reddish-brown face with eyes that are purplish-brown above and grey below. The thorax is olivaceous with brown median and black lateral stripes. The abdomen is reddish-brown with median and lateral black markings. The black markings are confluent at the end of each segment and enclose a reddish-brown spot. The wings are transparent with brown tips. The venation is bright yellow to brown and basal amber markings are pale. The wing spots are a dark brown and the lags are dark grey with narrow yellow stripes.

IUCN Red List Category & Criteria as Least Concern. The species is found throughout the Indian subcontinant and south east Asia, extending to Japan and south to Java and the Lesser Sunda Islands. This widespread and common species is abundant throughout its range and is not threatened; assessed as Least Concern. 
 
 

References:
http://en.wikipedia.org/wiki/Crimson_Marsh_Glider
http://www.iucnredlist.org/details/167395/0
 
 
The Species on Stamps
Singapore
1985.04.24
Malaysia
2000.11.25
Viet Nam
2011.07.11

 


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