Moanabates moanaensis, 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 : 924

Moanabates moanaensis n. sp.

Zoobank: 28E07C58-1AFB-4B8D-9151-59C49600817C

( Figures 12 , 13 A­D, 14A­G, 28B)

Material examined. Holotype male, unnamed stream crossing Flagstaff Road, Moana, South Island, New Zealand, 42°29.105 ′ S 171°43.719 ′ E, alt. 267 m asl, 4­iv­2020 (NMNZ). Paratypes: 0/2/0, same data as holotype (NMNZ, RMNH).

Diagnosis. As given for the genus.

Description. Male: Idiosoma rugose, dorsally 638 long and 484 wide, ventrally 677 long. Dorsum with a large unpaired, papillose anterior plate, 394 long, 363 wide, with three pairs of glandularia and a smaller posterior plate, 138 long and 175 wide. Posterior to the anterior dorsal plate four pairs of platelets, two of these with glandularia. Coxae in three groups, Cx­I+II fused medially. Cx­II and Cx­III elongated, extending halfway medial margin of Cx­IV. Cxgl­4 located near suture line of Cx­III/IV. Posterior to Cx­IV a pair of large platelets, Cxgl­3 not fused with the latter platelets. Genital field on a plate, 202 long, with three pairs of acetabula. Gonopore slit­like, 81 long. Posterolateral to genital field four pairs of platelets, three of these with glandularia. Excretory pore sclerotized posterior to genital field. Length of P1­5: 34, 78,

75, 70, 60. P2 with a large ventral extension with papillae, P4 stocky with a long, whip­like seta and a truncate ventral extension, P5 as in female. Length of I­leg­4­6: 102, 105, 103. I­leg­5 anteroventrally with a somewhat blunt, stout seta. Length of IV­leg­4­6: 133, 136, 134.

Female: Idiosoma dorsally 750 long and 659 wide, ventrally 822 long. Dorsum with a large unpaired plate, 444 long, 291 wide with a pair of postocularia, and a small unpaired posterior plate, 166 long and 188 wide. Moreover, dorsum with six pair of platelets, two of these without glandularia. Anterolateral pair of platelets 275 long, lateral to unpaired anterior plate. Coxae in three groups, Cx­I+II fused medially. Cx­II and to a lesser extent Cx­III elongated, apodemes of anterior coxae extending almost halfway medial margin of Cx­IV. Cxgl­4 located near suture line of Cx­III/IV. Posterior to Cx­IV a pair of large platelets, Cxgl­3 not fused with the latter platelets. Genital field with three pairs of acetabula, 269 long (from anterior margin of pregenital sclerite to posterior margin of postgenital sclerite), 261 wide; genital plate 186 in length. Pregenital sclerite 166 wide, gonopore 144 long. Lateral to genital field four pairs of platelets, three of these with glandularia. Excretory pore sclerotized, posterior to genital field. Length of P1­5: 34, 101, 94, 94, 73. Palp as in male, but whip­like seta of P4 much longer than in male and with a truncate ventral extension, and P5 with a pair of spatulate setae located ventrally. Length of I­leg­4­6: 119, 111, 109. I­leg­5 anteroventrally with a somewhat blunt, stout seta. Length of IV­leg­4­6: 148, 153, 144.

Etymology. Named after the town of Moana.

Figures

Figure 12 Moanabates moanaensisn. sp., male holotype, venter. Scale bar = 100 µm.

Figure 13 Moanabates moanaensisn. sp., male holotype (A­C, drawings; D, photograph). A – idiosoma, dorsal view; B – palp; C – I­leg­4­6; D – ejaculatory complex. Scale bars = 100 µm.