Lined-grey Bead Ormosia lineata

I examined this specimen several months after I trapped it and by this time the head, thorax and body had faded hugely and turned yellow. As there are Ormosia species that look yellow when fresh, I may well have gone wrong had it not been for my photos showing the living specimen (although none of these have genitalia matching my specimen, so I imagine I would have got there in the end). According to the excellent key in Alan Stubbs' British Craneflies, lineata should have a sharp thin median line on the thorax and the style should be dark-tipped. I wasn't quite sure from my photos if the median line was sufficiently sharply defined, and the style definitely wasn't remotely dark-tipped. Presumably this had faded like the rest of the abdomen, as none of the alternative options show the same shaped style. I initially found it rather difficult to see the shape of the styles, so partially cleared the abdomen in potassium hydroxide which made it much easier to see the styles. The forewing and the base of the antenna is shown below as the forewing venation and the extent of hairs on the 4th segment of the flagellum were characters used in determining this.

male Lined-grey Bead Ormosia lineata showing wing, antenna and styles, North Elmham Cathedral Meadows (Norfolk, UK), 19th April 2021

My next example proved challenging, thanks to going wrong at couplet 6 on page 68 in Stubbs. It's not the first time I've struggled with this couplet and am still not completely sure I really understand all the venation, with neither pictures matching my specimen. Once past this and on to subfamily Chioneinae it was relatively plain sailing although as above you could perhaps question whether or not the dark median line through the thorax was sufficiently sharply-defined.

female Lined-grey Bead Ormosia lineata showing wing, Gressenhall (Norfolk, UK), 28th March 2022