Procorticacarus nasutus, Smit, Harry, 2015

Smit, Harry, 2015, The water mite genus Procorticacarus K. O. Viets in Australasia (Acari: Hydrachnidia, Hygrobatidae), Zootaxa 3956 (1) : -

Procorticacarus nasutus n. sp.

( Figs. 4A–C )

Type material. Holotype female, Double Barrel Creek, Babinda, Queensland, Australia, 17º 20.852 S 145º 53.075 E, 20-x-2005 (QM).

Diagnosis. P3 without papillae.

Description. Female: Idiosoma ventrally 454 long, dorsally 413 long and 389 wide. Integument with hair-like papillae. Dorsum with two anteromedial plates, 70 long; postocularia lying in posteromedial corner. Gnathosoma indistinctly separated from venter (partly fused?). Gnathosoma with a long posterior process. First coxae medially widely separated. Fourth coxae with a nose-shaped medial extension; Cxgl-4 lying in the middle of fourth coxae. Genital field 180 wide, with three pairs of acetabula; anterior acetabulum 34 long. Length of P1-5: 20, 76, 121, 146, 54. P2 with a ventral projection with minute papillae; ventral margin of P3 without papillae, medial margins with a wrinkled sculpturation; P4 slender, setal tubercles located far posteriorly, wrinkled sculpturation only in posterior third of segment. Length of I-leg-4–6: 86, 100, 64 (96 till tip of segment). Length of IV-leg-4–6: 135, 138, 112. Legs without swimming setae.

Male: Unknown.

Etymology. Named for the nose-shaped fourth coxae.

Remarks. The only other known Australian species with P3 without papillae is P. angulicoxalis , but in this species Cxgl–2 is lacking (present in the new species), the fourth coxae is without the nose-shaped medial extension, and P3 and P4 are less slender compared to the new species.

Figures

FIGURE 4. A – C. Procorticacarus nasutus n. sp., holotype female: A = dorsum; B = venter; C = palp + capitulum. Scale bars = 50 µm.