Ixodiphagus
wasps (Hymenoptera: Encyrtidae) have been known as
parasitoids of ticks since the beginning of the 20th Century. Currently,
there are seven recognized species:
Ixodiphagus texanus
Howard,
Ixodiphagus hookeri
(Howard),
Ixodiphagus mysorensis
Mani,
Ixodiphagus hirtus
Nikolskaya,
Ixodiphagus theilerae
(Fielder),
Ixodiphagus biroi
Erdos, and
Ixodiphagus sagarensis
(Geevarghese). These wasps have been found parasitizing
ticks belonging to the genera
Ornithodoros
,
Amblyomma
,
Dermacentor
,
Hyalomma
,
Haemaphysalis
,
Ixodes
,
and
Rhipicephalus
. Parasitism by wasp parasitoids results in
direct mortality of the tick hosts and appears to have potential for
controlling them. This article reviews the taxonomy, life cycle,
seasonality, host range and geographical distribution of these wasps, and
their potential application to tick control.