Tachyporus hypnorum

I have several Tachyporus specimems that I need to return to, at least when Duff's relevant volume is published if not before. Most of them are, I think, hypnorum, but when I examined them I was concerned by the apaprent absence of microsculpture on the elytra which I understood was a key character of hypnorum. The exact wording in Hackston's key is "Elytra completely microscopically sculptured" which I assume means I should be able to see some microsculpture at least under high magnification. I have pended them for now in case Duff or another source provides more insight, but I shall be surprised if they don't turn out to be hypnorum given how common this species is supposed to be.

I examined this one a bit later and identified it as hypnorum despite the lack of clear microsculpture. In this case I could, just, see a vague hint of microsculpture on the elytra. It was far from clear and difficult to see at all, but maybe enough to qualify? Anywway, the other characters all seemed good for hypnorum, so I'm pretty confident it is.

Tachyporus hypnorum showing elytrra and maxillary palps, Ling Plantation, North Elmham (Norfolk, UK), 6th April 2024