Neumania (Neumania) indentata, Smit & Pesic, 2010

Smit, H. & Pesic, V., 2010, New Species Of Water Mites From Oman, With Some Zoogeographical Notes (Acari: Hydrachnidia), Acarologia 50 (2), pp. 151-195 : 177-179

Neumania (Neumania) indentata n. sp.

( Figures 20 A-E)

Type material — Holotype male, unnamed stream crossing road tyo Al Fay , near Ray, Oman, 24°38.709 N 56°06.760 E, alt. 562 m, 15-xi-2008 . Paratype: 0/ 1 juvenile /0, same data as holotype; 0/2/0, polls Wadi Bani Auf , 23°13.464 N 57°25.083 E, 13-xi-2008 .

Diagnosis — Male with IV-Legs modified in shape and setation.

Description

Male — Idiosoma dorsally soft, ventrally sclerotized; L ventrally 384, W 294, dorsal idiosoma L 373. Coxal plates reticulated, posteromedial corner of Cx-IV without such reticulation. Apodemes of Cx-I long, reaching onto Cx-IV ( Fig. 20A ). Cx-II and Cx-IV laterally with stout seta. Gonopore L 40. Genital field with seven pairs of acetabula. Palp ( Fig. 20B ): total L 203; L: P-1, 17; P-2, 60; P-3, 38; P-4, 64; P-5, 24; P-4 with a short anteroventral tubercle. L of I-Leg-4-6: 114, 130, 130. L of IV-Leg-4-6: 104, 136, 94. Ventral margin of IV-Leg-5 proximally with a triangular projection, in distal 2/3 concave, with five strong, broad setae, one of these very broad, with denticulated tip. Ventral margin of IV-Leg-6 proximally undulating, in the centre indented ( Fig. 20D ). First and second leg with long fluted or grooved setae. Swimming setae numbers: III-Leg-4 six, III- Leg-5 two, IV-Leg-3 one, IV-Leg-4 two and IV-Leg-5 three. Claws of legs without clawlet and claw blade.

Female — Idiosoma soft, ventrally L 458 (530- 608), W 348 (429-551), dorsally L 454 (532-660). Apodemes of Cx-I extending to middle of Cx-IV ( Fig. 20E ). Posterolateral corners of Cx-III and Cx- IV with a pair of stout setae. Coxal plates reticulated as in male. Genital field with 10 pairs of acetabula. Palp: total L 290; L: P-1, 26; P-2, 92; P-3, 50; P-4, 90; P-5, 32; palp as in male. L of I-Leg-4-6: 170, 168, 142. L of IV-Leg-4-6: 134, 162, 140. First and second legs with long grooved or fluted setae. Swimming setae numbers: III-Leg-3 one, III-Leg-4 five, III-Leg-5 two, IV-Leg-3 two, IV-Leg-4 and -5 three. Claws of legs without clawlet and claw blade.

Etymology — Named for the indented sixth segment of the fourth leg of the male.

Remarks — The shape and chaetotaxy of the fourth leg is not found in any other Neumania species. The female is not characteristic, and very likely not separable from related species (e.g. N. ambigua Piersig).

Figures

FIGURE 20: Neumania indentata n. sp. (A-D: male, E: female): (A, E) – idiosoma, ventral view; (B) – palp; (C) – I-Leg-4-6; (D) – IV-Leg-4-6. Scale bars = 50 µm (A-E).