Asperaturus petiolatus, Smit & Pešić, 2020

Smit, Harry & Pešić, Vladimir, 2020, New records of water mites from New Zealand, with the description of three new genera and ten new species (Acari: Hydrachnidia), Acarologia 60 (4), pp. 903-950 : 928

Asperaturus petiolatus n. sp.

Zoobank: 10B3979D-A5B4-481C-A52A-1E79B7682351

( Figures 15 A­B, 16A­E)

Material examined. Holotype male, Deep Creek at crossing with Bell Hill Road , Moana, South Island, New Zealand, 42°33.071 ′ S 171°36.014 ′ E, alt. 245 m asl, 4­iv­2020 ( NMNZ).

Description. Male: Idiosoma dorsally 486 long and 365 wide, ventrally 543 long. Integument rugose, frontal margin of dorsum concave, posterolaterally with two large triangular tubercles. Dorsal shield 365 long and 324 wide, with unpaired antero­ and posteromedial plates and two pairs of lateral platelets, anterolateral platelets with a pair of glandularia, posterolateral platelets without glandularia. Anteromedial plate with a pair of postocularia, 154 long and 219 wide. A pair of “free” glandularia located between lateral platelets and posteromedial plate, the latter with two pairs of glandularia. Dorsum posteriorly with a petiolus­like elongated extension. Suture lines of coxae incomplete, Cxgl­2 near suture line of Cx­III and Cx­IV. Posterior margin of Cx­IV indistinct and partly obsolete. Projections associated with insertions of fourth legs truncate. Gonopore 42 long, relatively wide, genital field with 10­12 pairs of acetabula lateral to the gonopore. Posterior margin of venter with a triangular, somewhat hyaline extension. Excretory pore dorsally, posterior to the dorsal shield. Length of P1­5: 30, 53, 31, 61, 28. P2 anteroventrally with a number of teeth, P4 ventrally somewhat bulging and a ridge in anterior half of segment. Length of I­leg­4­6: 68, 70, 68. I­leg­6 with a long ventral seta. Length of

IV­leg: 109, 77, 59, 73, 84, 73. IV­L­2 with a distoanterior extension.

Female: Unknown.

Etymology. Named for the presence of a petiole­like structure.

Figures

Figure 15 Asperaturus petiolatusn. sp., male holotype. A – idiosoma, dorsal view; B – idiosoma, ventral view. Scale bar = 50 µm.