Haemaphysalis davisi

Unique identifier: 18
Haemaphysalis davisi

Morphological Keys

Stage/Sex Morphological Keys
Female
  • The body measures 2.4 - 3.3 mm in length and 1.35 - 1.95 mm in breadth
  • The scutum (as broad as long and widest slightly anterior to the mid-length) features punctations similar to the male's and deep, linear, slightly converging cervical grooves that extend beyond the mid-length
  • Ventrally, the genital operculum is ~4/5 as long as its anterior breadth
  • The capitulum features a basis dorsally ~twice as broad as long with large, irregularly oval, widely spaced porose areas, broadly triangular, apically rounded cornua (~1/3 the base length), palpi resembling the male's, and a hypostome (as long as the palpi) with a 5/5 dental formula of 9–10 denticles per file
  • The legs possess a somewhat shorter spur on coxa I than the male
  • Broad, sub-equal spurs on coxae II and III extending slightly beyond the posterior margin
  • An apically pointed spur on coxa II
  • And apically rounded spurs on coxae III and IV.
  • Geevarghese, G., and A. C. Mishra. “Introduction.” In Haemaphysalis Ticks of India. Elsevier, 2011. https://doi.org/10.1016/B978-0-12-387811-3.00001-2.
Male
  • The body measures 2.55 - 2.93 mm in length and 1.58 - 1.88 mm in breadth
  • The scutum (~1.5 times as long as broad, widest in the middle) features broadly rounded margins, 11 narrowly elongate festoons, narrow lateral grooves extending beyond the mid-length (without enclosing the festoons), short obscure cervical grooves with small converging pits, and relatively numerous, small, discrete, regularly scattered punctations that leave a smooth, narrow posteromedian line
  • The capitulum has a basis dorsally ~1.5 times as broad as long with straight external margins, broadly triangular cornua (~1/3 the base length), moderately salient palpi, and a hypostome (slightly shorter than the palpi) with a chiefly 6/6 dental formula (7/7 anteriorly) of 7–11 denticles per file
  • The long, thin legs possess a prominent lanceolate spur on coxa I (extending beyond the anterior margin of coxa II) and broadly triangular spurs on coxae II to IV.
  • Geevarghese, G., and A. C. Mishra. “Introduction.” In Haemaphysalis Ticks of India. Elsevier, 2011. https://doi.org/10.1016/B978-0-12-387811-3.00001-2.
Nymph
  • The body measures ~1.6 mm in length and 1.1 mm in breadth
  • The scutum (~1.5 times as broad as long, widest at mid-length) has shallow cervical grooves and few, obscure punctations
  • The capitulum features a basis dorsally ~twice as broad as long with straight margins, triangular cornua (~1/2 the base length), campanulate palpi (~1.5 times as long as broad), and a hypostome (as long as the palpi) with a 3/3 dental formula of 7–9 denticles per file.
  • Geevarghese, G., and A. C. Mishra. “Introduction.” In Haemaphysalis Ticks of India. Elsevier, 2011. https://doi.org/10.1016/B978-0-12-387811-3.00001-2.
DISCLAIMER

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.