Thoracophoracarus uniacetabulatus, 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: 67-68

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Thoracophoracarus uniacetabulatus

n. sp.

Thoracophoracarus uniacetabulatus  n. sp.

( Figs. 41 A –CView FIGURES 41 A – C)

Type series. Holotype female, unnamed creek Bansadon Trail, Inobong, Crocker  Range, Borneo, Malaysia, 5 º 51.456 N 116 º 0 8.403 E, alt. 436 m asl, 18 -ix- 2012 ( RMNH). Paratypes: one female, same data as holotype ( RMNH); one female, Kibamabangan River at waterfall, Inobong, Crocker  Range, Borneo, Malaysia, 5 º 51.280 N 116 º 0 8.417 E, alt. 433 m asl, 18 -ix- 2013 (SP).

Diagnosis. Genital plates very narrow, one acetabulum wide, only near gonopore 2-3 acetabula posteriorly outside the acetabular row, swollen laterally.

Description. Colour greenish, idiosoma 518 (486-518) long and 425 (413-450) wide, in central part with strongly convex lateral margins, narrowed and truncated anteriorly (margin slightly concave) and posteriorly (margin straight). Preocularia on small tubercles, postocularia lying close to dgl- 1. Tips of Cx-I and -II extending beyond anterior idiosoma margin. Suture lines of coxae partly indistinct, especially posterior margin of fourth coxae. Genital plates very narrow, one acetabulum wide, near gonopore 2-3 acetabula outside this row, acetabula small and difficult to separate from idiosoma pores. Genital plates extending to lateral idiosoma margin and there swollen. Gonopore field 76 long, 98 wide; gonopore valves indistinctly sclerotized. Length of P 1 -P 5: 23, 46, 24, 41, 28. Length of I-leg- 4-6: 50, 60, 54. Length of IV-leg- 4-6: 72, 88, 82. III and IV-Legs with numerous swimming setae.

Male: Unknown.

Etymology. Named for the one acetabulum wide genital plates.

Remarks. Thoracophorus uniacetabulatus  n. sp. is highly distinct in the very narrow genital plates; in all other species of the genus acetabula are arranged in multiple rows. As the male is not known, the new species cannot be assigned to a subgenus.

Distribution. Borneo.


National Museum of Natural History, Naturalis