Ticks of Domestic Animals in Africa - Alan R Walker - Science Writer

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Coxae 1 to Coxae 4
Coxae 1 internal spurs: in Ixodes there may be internal spurs on the
coxae of the first legs; they are absent or short, or they are long.
Coxae 1 spurs distinctness: the coxae of the first legs have paired
internal and external spurs in some species. They may be indistinct, or
distinct.
Coxae 1 spurs length: the coxae of the first legs have paired internal
and external spurs in some species. The pair may vary in their length,
either short, or long.
Coxae 1 spurs pairing: the spurs on the ventral surface of coxae of the
first legs may be absent or small or unequal in some genera. In other
genera they are large and equal, approximately. An unequal spur may
be a distinct single spur on each coxa.
Coxae 1 to 3 spurs length: in Haemaphysalis females there are internal
spurs on the coxae of legs 1 to 3. These vary in length between
species from short, to medium.
1
2
3
Coxae 2 and 3 spurs presence: in female Rhipicephalus (Boophilus)
species the coxae of legs 2 and 3 may have spurs, they are either absent,
or present.
Coxae 2 to 4 external spurs: in Ixodes there may be small external
spurs on the coxae of legs 2, 3 and 4; these are either absent or indistinct,
or distinct.
Coxae 4 size: in most genera the coxae of the fourth legs are normal,
that is, approximately the same size as coxae of the other legs. In Dermacentor
they are very large compared to the other coxae.
Coxae 4 spurs: in Haemaphysalis males the coxae of the fourth legs
have internal spurs. These vary in length from medium, to long.