Hygrobates acutipalpis, Smit, Harry & Pešić, Vladimir, 2014

Smit, Harry & Pešić, Vladimir, 2014, Water mites from Mount Kinabalu and the Crocker Range, Borneo, Malaysia (Acari: Hydrachnidia), with the description of 34 new species, Zootaxa 3876 (1), pp. 1-71: 15-18

publication ID

http://dx.doi.org/10.11646/zootaxa.3876.1.1

publication LSID

lsid:zoobank.org:pub:071AFC59-C2EA-429A-8511-BAC5C4539C04

persistent identifier

http://treatment.plazi.org/id/03D48784-A925-FFA7-FF35-1149FCD1FCC6

treatment provided by

Plazi

scientific name

Hygrobates acutipalpis
status

n. sp.

Hygrobates acutipalpis  n. sp.

( Fig. 8 A –DView FIGURES 8 A – D)

Type series. Holotype male, Silau-Silau stream near park headquarters, Mt Kinabalu, Borneo, Malaysia, 6 º 0 0.595 N 116 º 32.497 E, alt. 1566 m asl, 10 -ix- 2012 ( RMNH). Paratypes: 7 males, 4 females, same data as holotype.

Diagnosis. Integument smooth, male genital field with a knob-like extension; P 2 with a rather blunt anteroventral extension without denticles, P 3 ventrally with 4–5 denticles in male, 5–7 denticles in female.

Description. Integument smooth; posteromedial margin of anterior coxal plate rounded. Cx-IV medially forming an obtuse angle. P 2 with a smooth anteroventral extension; P 3 with five (four) denticles of different size. Male: Idiosoma dorsally 425 (405–413) long and 389 (356–397) wide, ventrally 486 (445–478) long. Genital field length/width 104 / 123, anteriorly with a knob-like extension, with three pairs of acetabula in a triangular position; gonopore narrow, 58 long, anterior margin slightly convex, flanked anteriorly by a row of 3 (2–4) pairs of setae. Length/height of P 1 -P 5: 21 /26, 72/62, 64/40, 92/22, 36/ 13. Length of I-leg- 4–6: 104, 108, 96. Length of IV-leg- 4–6: 162, 170, 118. Legs without swimming setae.

Female: Idiosoma dorsally 486 (445–518) long and 454 (381–433) wide, ventrally 529 (486–543) long. Genital field with paired plates (100 long and 58 wide), each with three acetabula, posteriorly extending beyond post-genital sclerite. Pre-genital sclerite 68 wide, postgenital sclerite 64 wide. Length/height of P 1 -P 5: 20 /29, 78/ 73, 68/44, 98/26, 34/ 14; palp as in male, P 3 ventrally with 5–7 denticles. Length of I-leg- 4–6: 100, 114, 84. Length of IV-leg- 4–6: 180, 174, 120. Legs without swimming setae.

Etymology. Named for the ventral extension of P 2.

Remarks. The following Hygrobates  species show similarities with the new species (in brackets the differences with the new species): H. limi Wiles, 1991  from mainland Malaysia (dentation of P 3 irregular and smaller, extension of P 2 more pointed) and H. henni Wiles, 2004  from Thailand (extension of P 2 more pointed, P 3 with more denticles, genital field indented anteriorly).

Distribution. Borneo; known only from the locus typicus.

RMNH

National Museum of Natural History, Naturalis