Yeah, thanks again, Mike. Besides being completely unable to identify them, I am also still battling the genera and species of the Alleculinae.
I've got a total of eight Cylindrothorus species, some of which to be loaded into the iSpot dictionary not later than February or March 2015. I've got all yours. Please note that gender congruence makes Othelecta atra Pic --> Cylindrothorus ater (Pic).
Helopsisomira kochi Pic:
Gottit. Tribe, subtribe, genus and species waiting to be uploaded. Any day now, I think someone said.
Here I have a problem. You can help me by telling me from where you got those two names that you listed. My best synoptic reference is Borchmann (1910) (Coleopterorum Catalogus Vol. 3), which I have not mined yet, and which will obviously not include your species from 1930. The original SABIF list with which iSpot began yonks ago includes 56 Ectenostoma species, but I have deliberately left them in abeyance until I've checked all of them. Hence only the genus and no species is on iSpot presently. That original list was vrot of mistakes.
I cannot tell whether 56 Ectenostoma species for southern Africa are an unrealistically large number, since I have no idea at all what these beetles are or how they look.
Please let me know your source. I realise it was a couple of months ago already.