Amblyomma gervaisi ( Lucas, 1847 )

Ali, Abid, Almutairi, Mashal M., Robbins, Richard G., Chitimia-Dobler, Lidia & Ullah, Shafi, 2025, Updated checklist, morphological descriptions, hosts and vector potential of ticks (Acari: Argasidae, Ixodidae) in Pakistan, Zootaxa 5725 (2), pp. 151-202 : 165

Amblyomma gervaisi ( Lucas, 1847)

Distribution

This species is known from Lahore, Multan ( McCarthy 1967; Auffenberg & Auffenberg 1990), and central and northern KP ( Ali et al. 2019; Khan, M. et al. 2022).

Morphological characters

Male ( Fig. 11 , A–D): Body teardrop shaped, approximately 3.90± 0.2 mm long and 2.44± 0.1 mm wide, dorsoventrally flattened with posterior end broader than anterior; conscutum subcircular and ornate, punctations medium-sized and evenly distributed; cervical grooves short, deep and comma-shaped; ventral surface consisting of two paired and three unpaired plates: the adanal and accessory plates, and the pregenital plate, median plate and anal plate; legs stout, arising from ventrolateral region; coxa I with two broad, flattened and pointed spurs, external spur shorter than internal spur, coxae II–III each with a short, single, pointed spur, coxae IV with triangular spur; tarsi with a pair of sharply pointed, curved claws; basis capituli flask-shaped, dorsoventrally round, dorsal surface smooth with punctations, ventral surface bears 4–5 setae on each lateral margin; hypostome cylindrical, covered by denticles arranged in overlapping rows and terminating in a distinct corona, dental formula 3/3, with small teeth; palpal segments 1 and 2 fused, palpal bases with two long setae; genital aperture situated at level of coxae II, genital aperture oval, lacking setae; spiracular plates located ventro-laterally behind coxae IV, spiracular plate oval and concave, with tapering dorsal prolongation.

Female ( Fig. 11 , E–H): Body approximately 3.97± 0.2 mm long and 2.49± 0.1 mm wide, larger than male and dorsoventrally flattened, posterior region broader than anterior region; scutum covering one-third of body, with small punctations; cervical grooves deep, elongate, comma shaped; ventral body surface lacking sclerotized plates other than genital; dorsal surface of basis capituli with two longitudinally elongate porose areas; hypostome arising from basis capituli ventrally and equal in length to palps, dental formula 3/3; palpal segments 1 and 2 fused; coxal spurs similar to those of male, spur of coxa IV slightly longer than those of coxae II and III; genital aperture situated between coxae II, posterior lip of genital aperture U-shaped; spiracular plates located ventrolaterally behind coxae IV, oval and concave, with tapering dorsal prolongation.

Figures

FIGURE 11. Amblyomma gervaisiA: male dorsum (I: scutal ornamentation), B: male venter (I: spur of coxa III, II: spur of coxa IV); C: male dorsum (I: cervical groove); D: male venter (I: internal coxa spur of I); E: female dorsum (I: scutal ornamentation); F: female venter (I: internal spur of coxa IV); G: female dorsum (I: cervical groove); H: female venter (I: capitulum, II: internal spur of coxa I).