Potamarcha congener (Swampwatcher)

Details

Observed
31 Jul 2016 12:35:13
Quality Grade
Research
Location
Phum Dong, Koh Kong, Cambodia
Latitude
11.579808
Longitude
103.128188
Accuracy
100m
Attributes
Life Stage
Adult
Alive or Dead
Alive
Sex
Male
Added to iNaturalist
18 Jan 2020 14:01:29
Last updated
20 Jan 2020 20:57:27

Identifications and Comments

Identification by geechartier at 18 Jan 2020 14:01:30
Taxon: Cratilla lineata calverti [subspecies]
Identification by briangooding at 19 Jan 2020 01:57:16
Taxon: Potamarcha congener [species]
Comment by briangooding at 19 Jan 2020 01:57:57
What is on the surface of the right forewing basally? Do you have a higher resolution of that area?
Identification by oleg_kosterin at 19 Jan 2020 11:35:42
Taxon: Potamarcha congener [species]
Comment by oleg_kosterin at 19 Jan 2020 11:36:22
@briangooding I suppose these are Forcypomiya parasitic midges.
Identification by geechartier at 19 Jan 2020 12:51:21
Taxon: Potamarcha congener [species]
Comment by geechartier at 19 Jan 2020 18:06:57
@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 19 Jan 2020 20:16:54
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 19 Jan 2020 21:46:22
@briangooding sorry, I have just re-read your comment and seen that it explicitly refers to the right forewing.
Comment by briangooding at 20 Jan 2020 20:57:21
That's what I meant, Oleg, also thinking they were probably the same but wanted to make sure. Great observations, @geechartier!

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Observation content (c) Gerard Chartier, some rights reserved (CC BY)