A newly recognized family of the Ascoidea (Acari: Mesostigmata: Gamasina), based on a revised concept of the subgenus Lasioseius (Endopodalius) Christian and Karg, 2006 Author LindquistK, Evert E. Canadian National Collection of Insects, Arachnids, and Nematodes, Science. & Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, K 1 A 0 C 6, Canada. Author MorazaK, Maria L. Universidad de Navarra, Facultad de Ciencias, Departamento de Biología Ambiental, Campus Universitario, 31080 Pamplona, España. text Acarologia 2023 2023-09-05 63 4 998 1016 http://dx.doi.org/10.24349/4izt-pj1n journal article 10.24349/4izt-pj1n 2107-7207 10786431 CAD31ED5-B03E-4856-B9A4-FBF5F94E07CF Genus Endopodalius Christian and Karg, 2006 Subgenus Lasioseius (Endopodalius) Christian and Karg, 2006 Type species: Lasioseius (Zygoseius) alter Vitzthum, 1925 , original designation. Diagnosis — Adults of Endopodalius share with other genera included in the superfamily Ascoidea the series of attributes given above for diagnosis of that superfamily. As the only genus of Endopodaliidae , they are distinguished from those of other taxa of Ascoidea by the following characteristics, some of which are apomorphic, as indicated below: Dorsal shield with (1) humeral setae r3 not erect or differentiated in form from adjacent setae, and with (2) nearly all setae simple, none tricarinate, but (3) usually with setae Z4 and/or Z5 brushy, penicillate distally (apomorphy); (4) adult sternal shield anterior margin with more heavily sclerotized strip continuing as broadly widened extensions to unite with endopodal-peritrematal shield on either side (apomorphy); (5) female sternal shield posterior margin strongly convex, such that its posteromedian margin reaches same transverse level as adjacent, free metasternal plates (autapomorphy); (6) female endopodal plates between legs III-IV enlarged, extending under metasternal platelets (autapomorphy); (7) adult presternal region with small unpaired platelet at base of tritosternum (autapomorphy), and (8) with one to several paired platelets; (9) movable cheliceral digit with usually five or more teeth (apomorphy); (10) gnathotectum with elongated median process, fringed apically (apomorphy); (11) male with holoventral shield. Attributes 1, 2, 5-7 and 9-11 are repeated from the family diagnosis as distinctions from genera in closely related families.