Haemaphysalis formosensis

Unique identifier: 21
Haemaphysalis formosensis

Morphological Keys

Stage/Sex Morphological Keys
Female
  • The sub-circular scutum (~1.1 x 1.3 mm, rather broader than long) features numerous fine, shallow punctations and cervical grooves that start as small pits and continue as shallow grooves almost to the posterior border
  • Ventrally, the spiracle is transversely oval with a faint dorsal protuberance
  • The capitulum features a rectangular base (twice as broad as long) with slight blunt cornua, large, far-apart, oval, anteriorly converging porose areas, and longer palps than the male (but with similar characteristics)
  • The hypostome has a 4/4 dental formula, with a trace of 5/5 at its posterior end
  • The legs feature coxal spurs identical to the male's, but lack trochantal spurs entirely and possess a more slender, unarmed tarsus IV.
  • Arthur, Don R., George Henry Falkiner Nuttall, and Louis Edward Robinson. Ticks, a Monograph of the Ixodoidea Volume Pt.3. Nabu Press, n.d.
Male
  • The broadly oval body is livid brownish-yellow with lighter legs
  • The scutum (averaging ~2.4 x 1.9 mm) features numerous, very shallow, inconspicuous punctations, slight oval pits for cervical grooves, and long, noticeably straight lateral grooves enclosing one of the long festoons
  • Ventrally, the spiracle is pear-shaped with a pointed dorsal end
  • The capitulum possesses a rectangular base with strong, short cornua, and palps that lack dorsal spines but feature a slightly longer article 2 and a small, distinct retrograde spur under article 3
  • The short, broad hypostome has a 6/6 dental formula (~8 teeth per file, with smaller median teeth and much larger external files)
  • The legs have rather strongly-developed spurs on coxae I–IV (with coxa I truncated posteriorly and its spur proceeding from the postero-external angle), progressively diminishing trochantal spurs, and a stout tarsus IV featuring pseudo-segments of almost equal length and a small terminal ventral spur.
  • Arthur, Don R., George Henry Falkiner Nuttall, and Louis Edward Robinson. Ticks, a Monograph of the Ixodoidea Volume Pt.3. Nabu Press, n.d.
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TickMapKB is a database of tick species, their distribution, and associated data, compiled from published literature and publicly available sources. The authors are not liable for any inaccuracies or omissions in this resource. This database is intended to support research on tick ecology and distribution and does not necessarily reflect the views or objectives of the authors’ affiliated institutions or funders.