This name is a synonym of Ophrys scolopax subsp. cornuta (Steven) E.G.Camus.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 373533) with original publication details: J. Eur. Orch. 40: 237 2008.
This name record (from WCSP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Ophrys oestrifera in version 1 of The Plant List.