Euphaea ochracea

Scientific name: Euphaea ochracea Selys, 1859

Family: Euphaeidae

Thai name: แมลงปอเข็มน้ำตกสีตาลแดง, แมลงปอเข็มหางโป่งปีกแดง, แมลงปอเข็มน้ำตกตาลแดง

---

Euphaea ochracea is the most common euphaeid species found in waterfall. With red wings, I can't take my eyes of it. Last few weeks, I spotted underwater oviposition of this species for the first time. While I walked against the stream current (this shaded and fast-running forest stream is about 2 m wide), I stopped at the short cascade with a big half-submerged log on the left (about 18-20 cm in diameter) and it's a splash zone of the cascade. Suddenly, a female few into the water at 60-70 degree. It clung the log and went down deep until I couldn't see it. This stream is about 15-20 cm deep. This behavior took 2-3 minutes before it went up and flew away.   

male

Male is red body with balck stripes and it's all black in old male. Wings are orange and turns to red as it ages. Base of abdomen is red and black in the rest. Dorsum of S-10 has a process pointed upward. Caudal appendages are black. Female is yellow body with black stripes. It's very hard to differentiate the female of this species from female of other species. Base of wings are ochre. Abdomen is black with white lateral line and spots. 

female

You cann see this species in all parts of Thailand all the year.