Ivoria Kontschan , 2019

Kontschan, Jeno & Ermilov, Sergey G., 2022, The second species of the genus Ivoria Kontschan, 2019: description of Ivoria alourouai sp. nov. from Ivory Coast (Acari, Mesostigmata, Urodinychidae), ZooKeys 1082, pp. 63-71 : 63

Genus Ivoria Kontschan, 2019

Ivoria Kontschán 2019: 1024.

Type species.

Ivoria taiensis Kontschán, 2019

Diagnosis.

Idiosoma subpentagonal, dorsally domed, marginal and dorsal shields fused anteriorly. All dorsal setae short, with pilose or serrate distal margins. Five pairs of sternal setae smooth or pilose. Genital shield of female subtriangular. Peritreme L-shaped or hook-shaped. Tritosternum with vase-like base, apically serrate, laciniae subdivided into two pairs of short lateral and one pair of long central branches. Hypostomal setae h1 robust, basally with lateral teeth, h2, h3, and h4 narrow and marginally serrate. Palptrochanter setae v1 robust and serrate, v2 situated on small protuberance and divided into a short smooth and a long, basally serrate and apically pilose branches. Corniculi small and horn-like, situated at posterior level of h2. Internal malae long and smooth. Chelicerae large and robust with internal sclerotized nodes, movable digit shorter than fixed digit, both digits bearing a large central tooth in addition to smaller subapical teeth. Leg I without ambulacral claws; majority of leg setae marginally pilose.

Remarks.

The robust and large chelicerae occur only in some genera within the Uropodina . The following genera Baloghjkaszabia Hirschmann, 1973, Kaszabjbaloghia Hirschmann, 1973, Wernerhirschmannia Hiramatsu, 1983, Multidenturopoda Wiśniewski & Hirschmann, 1991, Bloszykiella Kontschán, 2010, Editella Kontschán, 2011 and Jedediella Kontschán & Starý, 2012 have large and robust chelicerae; the most important differences among them are summarized in Kontschán (2019: table 1). Unfortunately, families of Uropodina are not well defined, and the classification system of Uropodina is confusing, so it is questionable which genera belong to the family Urodinychidae . The chelicerae of the other members (like species of the genus Uroobovella sensu lato) in the family Urodinychidae are small, narrow, and usually have a shorter or longer apical prolongation on the fixed digit.