Mesotritia (Mesotritia) nuda (Berlese, 1887)

Per, Sedat, Çubukçu, Kübra, Toluk, Ayşe & Ayyildiz, Nusret, 2021, Contributions to the Turkish oribatid mite fauna (Acari: Oribatida) from Sakarya and Yozgat provinces, Turkish Journal of Zoology 45 (1), pp. 70-78 : 70-72

Mesotritia (Mesotritia) nuda (Berlese, 1887)

Morphological features ( Figure 1 a-h). Body length: 807 (710–890) μm, width: 423 (380–470) μm (n = 10). Prodorsum with one lateral carina on each side; sensilli fusiform; lamellar and rostral setae long and smooth; rostral setae located at the same level with lamellar setae; interlamellar setae the shortest; rostral setae near each other; notogaster with 14 pairs of thin setae; genito-anal formula: 6-2-2-3; legs heterotridactylous.

Material examined. Turkey, Sakarya, the Kılıçkaya hill: 40°28’800’’ N, 30°27’930’’ E, 1100 m, 13.VI.2015, 3 inds., 40°29’175’’ N, 30°25’438’’ E, 1016 m, 02.XI.2015, 7 inds., 40°29’559’’ N, 30°28’740’’ E, 402 m, 01.XI.2015, 2 inds., 40°29’300’’ N, 30°25’900’’ E, 955 m, 21.VI.2015, 6 inds. (3 of them were used for SEM) from soil under Pinus sp. ; 40°29’460’’ N, 30°27’961’’ E, 1350 m, 13.VI.2015, 1 ind. from lichen on the tree; 40°30’067’’ N, 30°028’203’’ E, 1298 m, 19.VI.2015, 1 ind. from soil; 40°30’129’’ N, 30°28’348’’ E, 1288 m, 19.VI.2015, 1 ind. from soil under Abies sp. ; 40°30’103’’ N, 30°21’852’’ E, 175 m, 01.X.2015, 1 ind. from soil under Rubus sp. ( Rosaceae ); 40°29’342’’ N, 30°23’320’’ E, 487 m, 01.XI.2015, 1 ind. from soil under Quercus sp. ; 40°29’388’’ N, 30°23’028’’ E, 463 m, 01.XI.2015, 2 inds., 40°29’207’’ N, 30°23’763’’ E, 600 m, 06.XI.2015, 2 inds., 40°28’900’’ N, 30°23’510’’ E, 598 m, 06.XI.2015, 4 inds. from lichen on tree.

Distribution: Mesotritia (M.) nuda (Berlese, 1887) has a semicosmopolitan distribution ( Subías, 2004, updated 2020; Liu and Chen, 2010; Niedbała, 2011). This is the first record from Turkey.

Remarks. Mesotritia (M.) nuda (Berlese, 1887) can be distinguished from congeners by setae ro situated at the level of setae le, setae ad 3 situated anteriorly of an 1 setae; anal plates with two pairs of setae; genital plates with 6 pairs of setae. The body length for the species is recorded as prodorsum length 425–490 μm and width 305–335 μm, notogaster length 770–960 µm and width 515–601 μm by Liu and Chen (2010). Prodorsum length 369 μm, notogaster length 687 μm by Niedbała (2014). The Turkish specimens with average 807 (710–890) μm in length and average 423 (380–470) μm in width are smaller than reported.

Figures

Figure 1. Mesotritia (M.) nuda (Berlese, 1887).a- Lateral view; b- Prodorsum, lateral view; c- Dorsal view; d- Prodorsum, dorsal view; e- Sensillus; f- Ventral view; g- Subcapitulum; h- Genito-anal region.