Gilbert is quite right to move this post to the moth forum.
Both are unfamiliar species to me. However, the behaviour ofspinning round / running round in circles is quite common amongst several families of micromoth, particularly Cosmopterigidae and Gracillariidae. These photos represent between perhaps 0.05% to 0.1% of HK's undocumented microlepidoptera fauna (i.e. another 1,000 to 2,000 species to go!). Unfortunately for both these species, it may be many years before a correct identity can be assigned, as the only certain method of determining many micros is to rear a series and then compare the bred series (of specimens) against the literature and collections. This takes a lot of time and effort.
The dark specimen is not determinable even to family from this photo - I need to see a lateral view of the body and head, also a close-up of the head, clearly showing the labial palps, frons and vertex would be very helpful.
The orange and metallic species could well belong to Gracillariidae, though the labial palps are quite long and definitely recurved - a more gelechioid trait (suggesting Cosmopterigidae as a likely placement to family).
More than that I can't say 'cos I don't know!
welcome to the "scary, scary" world of identifying truely micro insects!
[ Last edited by hkmoths at 2006-10-18 20:55 ]