Abstract
Parasitism of
Andrena
(
Suandrena
)
savignyi
Spinola (
Hymenoptera
:
Andrenidae
) by
Stylops
Kirby (
Strepsiptera
:
Stylopidae
) has been recorded only once, and from an individual collected in Egypt almost a century ago, with the parasite described as
Stylops
savignyi
Hofeneder. The recent rediscovery of this
Stylops
from an individual of
Andrena
savignyi
permits a reinterpretation of the species and its affinities among other
Stylops
. The bee was collected at flowers of
Zilla
spinosa
(Turra) Prantl. (
Brassicaceae
) in Amariah, Riyadh, Kingdom of Saudi Arabia. Based on DNA barcode sequences from material sampled across Africa, Asia, and Europe, it is apparent that
Stylops
savignyi
is conspecific with
Stylops
nassonowi
Pierce, and we accordingly synonymize this name (
syn. n.
), with the latter representing the senior and valid name for the species. A differential diagnosis is provided for
Stylops
nassonowi
and the morphology of the female is described, as well as the first instars.