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3. Mayfly Identification help

Hello, what kind of mayfly is this? I mean the name with the species. Thank you for your help.

Hi Naaimzerox-

I believe this female imago to be of family Heptageniidae. Where is from, and when was it photographed?

I found it at Ulu Yam, Selangor, Malaysia. it was 3 months ago. Thank you for your reply

Thanks. Am only able to find one mayfly species (of family Heptageniidae) listed for Malaysia, which is Atopopus malaysianus. However, absent either a description or photo for purpose of comparison to the very nice photo you submitted for identification, who knows :-)

I was able to find a couple of papers that list some mayflies for Malaysia and for Borneo. The links are below. The paper on Malaysian mayflies has a list starting on page 494.

http://www.tropecol.com/pdf/open/PDF_57_3/10%20Ghani%20et%20al.%20f.pdf

http://www.ephemeroptera-galactica.com/pubs/pub_s/pubsartorim2003p403.pdf

I looked further and found these photos under Thailand mayfly (google search) which look nearly identical to yours.

https://thailandwildlife.photoshelter.com/image/I0000UDik4riE7fg

https://thailandwildlife.photoshelter.com/image/I0000HnyisfBdMAU

Unfortunately, they do not list the mayfly by name, and as near as I can tell most Thai mayfly keys list nymphs rather than adults.

Thank you for all the information given. I will do more investigation. Any update is highly appreciated.

In your opinion, can it be Electrogena lateralis?

Naainzerox,

I know nothing about entomology but was wondering why you would think your mayfly is Electrogena lateralis after reading this quote I found by Googling the name you provided;