Redescription of Female Laelaps nuttalli Hirst, 1915 (Acari: Dermanyssoidea: Laelapidae) with Emphasis on Its Gnathosoma, Sense Organs and Pulvilli

Figure 2

Scanning electron micrographs of gnathosoma and sense organs of female L. nuttalli. (a) Whole gnathosoma consisting of long basis capituli (bc) carrying median hypostome (h) and 2 lateral pedipalps (pd). Tritosternum (tr) with 2 laciniae located below the deutoternal groove (dg) on the ventral side of the basis capituli. I = first leg, s = tarsus. Arrows showing spines in the deutosternal groove. (b) Hypostome carrying dorsal labrum (lb), ventral labium (lm), and 2 lateral chelicerae (ch). Pd = pedipalp. (c) As in (b) showing labrum (lb) consisting of 2 lobes, each carrying minute papillae, terminal segments of chelicerae (ch), and labium consisting of club-shaped outer lobes (ol) and 2 median lobes (mL) carrying laciniae (arrows). (d) Palpal organ (po) consisting of 10 terminal setae (1–10). (e) Foreleg tarsal organ (to) consisting of 15 terminal setae.