Nosomma monstrosum

Unique identifier: 58
Nosomma monstrosum

Morphological Keys

Stage/Sex Morphological Keys
Female
  • The chestnut-brown scutum exhibits diffused whitish ornamentation (more developed than in the male), strongly unequal punctations, and narrow, deep cervical grooves that converge before diverging and failing to reach the posterior margin
  • Discontinuous marginal grooves enclose only the two extreme festoons
  • Ventrally, the sub-triangular spiracle is as long as it is broad
  • The coxal armature matches the male's, but tarsus IV features a slightly stronger distal ventral spur preceded by a smaller one
  • The 0.85 mm capitulum has long, oval porose areas separated by half their diameter, an obsolete lateral salience on palpal article III, a hypostome with a 3/3 dentition of ~9 teeth per row, and an external cheliceral article with three cusps and a crescent-shaped dorsal 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.
Male
  • The body features a Kaiser-brown to chestnut-brown scutum covered with a whitish ornamental secretion, markedly unequal punctations, flat eyes, a typically well-defined pseudo-scutum, and 11 festoons with separating grooves
  • The cervical grooves are short, oval, deep, and convergent anteriorly, while narrow lateral grooves are highlighted by an adjacent row of punctations
  • Ventrally, it possesses a light brown or yellowish-white venter, a trilobed sub-anal shield (with a fourth lobe serving as a strongly chitinised accessory shield), 11 prominent scutes, and a comma-shaped spiracle
  • The ornamented legs feature two well-separated, unequal spurs on coxa I (the external being twice as long as the internal), two short, sub-equal spurs on coxae II–IV (strongest on IV), and a tapering tarsus IV with two strong ventral spurs
  • The 0.71–0.75 mm capitulum has a rectangular base, ornamented palps with a lobed antero-internal angle on article I, a dorsal retroverted prominence and sabre-shaped hairs on article II, a strong external process and ventral retroverted spur on article III, and a hypostome with a 3/3 dentition of 7 teeth per row.
  • 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.