Ioannibates papillosus, Smit, Harry, 2009

Smit, Harry, 2009, New Australian hygrobatids (Acari: Hydrachnidia: Hygrobatidae), with the description of two new genera and three new species, Zootaxa 2114, pp. 61-68 : 64-65

Ioannibates papillosus sp. nov.

( Figs. 7–11 )

Type material. Holotype male, St. John’s Brook, St. John’s Brook Conservation Park, Western Australia, Australia, 22 April 2008, 33° 57’27.83” S 115° 41’0.40” E ( WAM).

Description. Male: Idiosoma 421 long and 389 wide. Idiosoma with many papillae. Dorsum with one large plate, 356 long and 324 wide, with the postocularia and two pairs of glandularia ( Fig. 8 ). Dorsal furrow with five pairs of glandularia, one pair on a small platelet with two wart-like extensions. Gnathosoma separated from first coxal plates. First coxal plates medially fused. Fourth coxal plates rounded medially, glandularia of fourth coxal plates located near suture line of third and fourth coxal plates. Posteriorly of fourth coxal plates a large area of sclerotization. Genital field on a large somewhat triangular plate, with three pairs of acetabula, the anterior pair separated from the two posterior pairs ( Fig. 7 ). Gonopore 52 long, genital field 152 long and 210 wide. Lengths of PI–PV: 20, 86, 74, 106, 26. PII and PIII ventrally with denticles, those of PII only anteriorly ( Fig. 9 ). Ventral margin of PIV with a tiny tubercle located posterior of middle of segment. Chelicerae 172 long. Lengths of I-leg-4-6: 132, 140, 80. I-leg-5 slightly modified: widened, anteroventrally with a blunt and slightly curved seta ( Fig. 10 ). Lengths of IV-leg-4-6: 200, 198, 146. Segments of fourth leg slender ( Fig. 11 ). Legs without swimming setae, claws with clawlet and small claw blade.

Female: Unknown.

Etymology. Named for its papillate idiosoma.

Figures

FIGURES 7 – 8. Ioannibates papillosus sp. nov., holotype male. 7) ventral view; 8) dorsal view. Scale bar = 50 µm.

FIGURES 9 – 11. Ioannibates papillosus sp. nov., holotype male. 9) capitulum with palp 10) I-leg- 4 - 6; 11) IV-leg- 4 - 6. Scale bar = 50 µm.