Haemaphysalis cornigera

Unique identifier: 15
Haemaphysalis cornigera

Morphological Keys

Stage/Sex Morphological Keys
Female
  • The unfed female measures 2.6 x 1.6 mm
  • The scutum (1.0 - 1.3 mm long by 1.1 - 1.4 mm broad) is generally broader than long, featuring deep, numerous, close-set, uniformly scattered punctations and sub-parallel cervical grooves that do not reach the posterior margin
  • The dorsum has a marginal groove enclosing the extreme festoon
  • Ventrally, the genital aperture is located between the third pair of coxae, the spiracle is pear-shaped with a centrally located macula, and tarsus IV lacks ventral spurs
  • The capitulum (0.58 mm long) features a base three times as broad as long with short blunt cornua, sub-circular porose areas separated by their own diameter, and a hypostome with 4/4 rows of 12 comparatively stronger teeth
  • The palps feature an obsolete ventral retroverted process on article II, while article III lacks an external process but has a longer ventral process than the male, creating a discontinuous lateral contour between articles II and III.
  • Sharif, M. “A Revision of the Indian Ixodidae with Special Reference to the Collection in the Indian Museum.” Records of the Zoological Survey of India, September 30, 1928, 217–344. https://doi.org/10.26515/rzsi/v30/i3/1928/162556.
Male
  • The body measures 2.3 - 3.3 mm in length and 1.5 - 2.1 mm in breadth
  • The sayal-brown to verona-brown scutum features deep brown posterior margins and festoon separating grooves, fine, numerous, close-set punctations, two irregular central depressions, and short, superficial lateral grooves
  • The cervical grooves are short, deep, and parallel anteriorly, becoming superficial and divergent posteriorly
  • Ventrally, the spiracle is sub-triangular with a macula near the anterior angle
  • The strong legs feature two rows of ventral hairs, coxae that progressively increase in size from I to IV, two well-separated spurs on coxa IV, and a tapering tarsus IV with two ventral spurs
  • The capitulum (0.45–0.53 mm long) has a base less than three times as broad as long, palps as broad as they are long, and a hypostome with 4/4 to 5/5 rows of ~10 teeth per row
  • Palpal article II features a short, sub-triangular ventral retroverted process on its lateral salience, while sub-triangular article III bears three processes (a short dorsal ridge, a moderate ventral process, and a long, backward-pointing external process).
  • Sharif, M. “A Revision of the Indian Ixodidae with Special Reference to the Collection in the Indian Museum.” Records of the Zoological Survey of India, September 30, 1928, 217–344. https://doi.org/10.26515/rzsi/v30/i3/1928/162556.
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.