New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Abstract

New records are presented of the water mite genus Arrenurus from Argentina, Bolivia and Surinam. Five new species are described, i.e. Arrenurus mansoensis n. sp., A. niger n. sp., A. stagnalis n. sp., A. surinamensis n. sp. and A. tempelmani n. sp., and one new subspecies, i.e. A. tenuicollis lacustris n. subsp. Arrenurus soesilae Makan, 2005 is synonymized with A. epimerosus Marshall, 1919.

Checklist of Arrenurids (Acari: Hydrachnidia: Arrenuridae) of Mexico, with New Records from the Yucatan Peninsula, and the Description of Five New Species of the Subgenera Megaluracarus and Dadayella

“…Megaluracarus Viets, 1911 can be considered the most complex subgenus of Arrenurus in terms of diversity and range of morphological characteristics [6]. Another subgenus, Dadayella, is difficult in taxonomy, since some of its descriptions have been based only on females [1,4]. This study supplies a checklist of arrenurids from Mexico, providing three new records and describing four new species of the subgenus Megaluracarus: A. eduardoi n.…”

“…Arrenurus Dugés, 1834 is the most species-rich water mite genus, with approximately 1000 species described worldwide, and is currently divided into 11 accepted subgenera: Arrenurus, Arrhenuropsides, Arrhenuropsis, Brevicaudaturus, Dadayella, Dividuracarus, Megaluracarus, Micruracarus, Rhinophoracarus, Truncaturus, and Stygarrenurus [1,2]. In Mexico, 37 species are reported, divided into five subgenera: Arrenurus, Arrhenuropsis, Dadayella, Megaluracarus, and Truncaturus.…”

The Unique Cauda-Liked Structure Represents a New Subfamily of Cunaxidae: Description of New Taxa and Discussion on Functional Morphology

“…A similar structure, with cauda and petiole as mating apparatuses [ 28 ], presents in some males of the water mite family Arrenuridae, especially those of the subfamily Arrenurinae, which makes the arrenurid mites sexual dimorphic [ 29 ]. The Arrenurid cauda is formed by an elongation of the hysterosoma posteriorly to a variable extent, and the petiole, either simple or complicated, and is a device derived from the integument of the idiosoma either caudally or directly from the posterior edge of dorsal shield [ 30 ]. The genital field or anal area may be or not on the cauda.…”

Water mites from French Guiana, with the description of 14 new species (Acari: Hydrachnidia)

“…All but one paper deals with the water mites of Surinam, with eight publications known, i.e. Walter (1919a), K. Viets (1939Viets ( , 1940aViets ( , b, 1954a, Besseling (1949), Makhan (2005) and Smit (2020a). The number of water mites known from Surinam tallies 57 (Table 1).…”