Lauritzenia (Incabates) nuda ( Hammer, 1961 )

Xu, Shu-Jing, Liu, Cheng-Lin & Chen, Jun, 2024, Taxonomic contribution to the knowledge of the genus Indoribates and Lauritzenia (Acari, Oribatida, Haplozetidae), with description of a new species from China, Zootaxa 5556 (1), pp. 84-96 : 93-94

Lauritzenia (Incabates) nuda ( Hammer, 1961) . New record to China

Incabates nudus Hammer, 1961: 108 , fig. 104; Corpuz-Raros 1980: 175, fig 3A–E.

Lauritzenia (Incabates) nuda ( Hammer, 1961) : Subías 2004: 209.

Material examined. One female (in alcohol, LK-14-027): China, Guangxi, Beihai, Xieyang Island , 20°55′02″N, 109°12′18″E, ca. 30 m a.s.l., litter under the bush, 21.IV.2014 .

Distribution. China (Guangxi), Philippines, India, Peru.

Remarks. The specimen we examined differs from the type specimens in that the interlamellar seta is a little shorter than lamellar seta rather than being the same length. Other characteristics remain consistent. The specimen we examined differs from those described by Corpuz-Raros (1980) in that the body is more elongated and interlamellar seta appearing shorter in dorsal view. Other characteristics remain consistent.

Hammer (1971) once stated that three species she described, Incabates nudus Hammer, 1961 , Incabates angustus Hammer, 1967 and Incabates medius Hammer, 1971 are very similar, and differing only in a few characteristics. The differences between them are that: (1) Inc. nudus is wider than Inc. medius , and Inc. medius is wider than Inc. angustus ; (2) the anterior notogastral margin of Inc. medius and Inc. angustus is more convex than that of Inc.

nudus; (3) in Inc. medius , h 3 and p 3 are located on a transverse line; in Inc. angustus , p 3 is located much farther anterior to h 3; in Inc. nudus , p 3 is located posterior to h 3. These differences are very small.

Due to their similarity, Subías (2004) regarded Inc. medius as a synonym of Inc. angustus . Later, Subías (2004,

updated 2018) moved Inc. angustus (= Inc. medius ) to the genus Scheloribates , possibly due to the immovable pteromorphs described by Hammer (1967). However, although Hammer (1967) stated the pteromorphs of Inc.

angustus are immovable, she also stated there is a distinct longitudinal line in the area of pteromorphs. Combined with the illustrations, we refer to that the pteromorphs of Inc. angustus and Inc. medius may be movable. Thus, we think Inc. angustus and Inc. medius may be synonyms of L. (Inc.) nuda , but additional research is necessary.