Biology Reference
In-Depth Information
Legs: Legs are approximately as in male. Coxa are with spur outline as in male
on I; spurs of II to IV are reduced to short, broadly triangular or rounded ridges,
extending only slightly beyond posterior margins.
Nymph (
Figures 2.74 and 2.75
)
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Length is approximately 1.25 mm, breadth 0.80 mm.
Capitulum: Basis capitulum is dorsally approximately 2.1 times as broad as
long; cornua are broadly triangular, approximately one-half as long as the base of
basis capitulum. Palpi are campanulate. Hypostome is as long as palpi; dental for-
mula is 2/2, with six or seven denticles in a file.
Scutum: Scutum is approximately 1.3 times as broad as long, greatest breadth is
at the level of anterior two-fifths of length. Cervical grooves are linear, parallel to
scutal mid-length, thence shallow and diverging to margins. Punctations are few
and obscure.
Legs: Coxa are each with spur quite similar to that of female except that spur of
II is broadly triangular and extends well beyond coxal margin.
Larva (
Figures 2.74 and 2.75
)
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Length is approximately 0.75 mm, breadth 0.50 mm.
Capitulum: Basis capitulum is dorsally approximately 2.2 times as broad as
long; cornua are broadly triangular, approximately one-third as long as the base of
basis capitulum. Palpi are quite similar to those of nymph except that internodorsal
margin of segment II is mildly convex, and ventral spur of III extends to mid-
length of segment II. Hypostome is with large corona of five rows of hooklets; den-
tal formula is 2/2, with five or six denticles in a file.
Scutum: Scutum is 1.5 times as broad as long; cervical grooves are linear,
extend to scutal mid-length; other characters are quite like those of nymph.
Legs: Coxa I is with spur broadly triangular, extending well beyond coxal mar-
gin; II is with a broadly rounded ridge on coxal margin; III is with a very small,
rounded ridge on coxal margin.
Related Species
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Haemaphysalis ramachandrai is a member of the H. bispinosa group of tropical
southern and temperate northeastern Asia and outlying islands. At least seven dis-
tinctive species comprise this group. The species ramachandrai differs from other
members of the “bispined” group by its small size and in scutal characters, reduced
spurs of female coxa II to IV, absence of a ventral spur on female trochanter II,
etc. Both bispinosa and ramachandrai are small species, but in bispinosa the long,
distinct lateral grooves and punctations, and reduced coxal II to IV spurs, easily
distinguish it from ramachandrai.
