Ophrys arnoldii has been described not until 1999 in Natural.belges 80 (Orchid. 12): 244-260+277. Its name honours the teacher José Enrique ARNOLD from Manresa in Catalunya, who executed the preparing investigations in his region. Most probably the orchid is only occurring in Spain.
Ophrys arnoldii holds its lip often more steep than Ophrys forestieri (synonym: Ophrys lupercalis), but otherwise it's looking like this species, which is much earlier in flower. This is no wonder, because Ophrys arnoldii is pollinated by the same bee Andrena nigroaenea, however by the second generation of the bee.