Time Observed
31 Jul 2016 12:35
Quality Grade
Phum Dong, Koh Kong, Cambodia
100 m
Added to iNaturalist
18 Jan 2020 07:01
24 Nov 2021 10:43


Identification by geechartier at 2020-01-18 07:01:30

Cratilla lineata calverti [subspecies]

Identification by briangooding at 2020-01-18 18:57:16

Potamarcha congener [species]

Comment by briangooding at 2020-01-18 18:57:57

What is on the surface of the right forewing basally? Do you have a higher resolution of that area?

Identification by oleg_kosterin at 2020-01-19 04:35:42

Potamarcha congener [species]

Comment by oleg_kosterin at 2020-01-19 04:36:22

@briangooding I suppose these are Forcypomiya parasitic midges.

Identification by geechartier at 2020-01-19 05:51:21

Potamarcha congener [species]

Comment by geechartier at 2020-01-19 11:06:57

@briangooding and @oleg_kosterin, the marks on the wings appear to be reflected light. I have added a crop of the originally posted photo, plus another that was take only 20 seconds later. The second image shows no white marks on the hindwing.

Comment by oleg_kosterin at 2020-01-19 13:16:54

At least I meant two brownish things, most probably midges full of haemolymph, at the base of the left fore wing. (Sometimes they are better seen on photos, especially Zygoptera, as you remember.) The nature of white marks is evident

Comment by geechartier at 2020-01-19 14:46:22

@briangooding sorry, I have just re-read your comment and seen that it explicitly refers to the right forewing.

Comment by briangooding at 2020-01-20 13:57:21

That's what I meant, Oleg, also thinking they were probably the same but wanted to make sure. Great observations, @geechartier!