Subgenus Leptogamasus Trägårdh, 1936 • Leptogamasus (Leptogamasus) obesus (Holzmann, 1969) • Original name: Pergamasus obesus Holzmann, 1969. • In: Acarologie. Schriftenreihe für Vergleichende Milbenkunde, 13: 41. Irish Records: Organic horizon and moss on soil under Sitka spruce (Arroyo et al., 2008, 2012, 2013a). Counties: Laois, Wicklow. • Leptogamasus (Leptogamasus) parvulus (Berlese, 1903) • Original name: Gamasus (Pergamasus) parvulus Berlese, 1903. • In: Redia, 1: 237. • Combinations/variations used in Irish literature: Pergamasus parvulus Berlese also var. dilatatellus Berlese (Halbert, 1915; Hull, 1918). Irish Records: Rotten wood (Halbert, 1915). Counties: Dublin, Wicklow. • Leptogamasus (Leptogamasus) suecicus Trägårdh, 1936 • Original name: Leptogamasus suecicus Trägårdh, 1936. • In: Entomologisk Tidskrift, 57: 227. • Combinations/variations used in Irish literature: Pergamasus suecicus (Trägårdh) (Breslin, 1979; Cur- ry, 1969a, 1970; Emmanuel, 1977,; Ganley, 1976; Heneghan, 1994; Little & Bolger, 1995; McCarthy, 2004; O’Connell, 1994; Purvis & Curry, 1980), Pergamasus (Paragamasus) suecicus (Trägårdh) (Whelan, 1976), Paragamasus suecicus (Trägårdh) (Bolger, 1980). Irish Records: Pasture (Curry, 1969a, 1970; Ganley, 1976; Purvis & Curry, 1980, Bolger, 1980; Piotrowska, 2009); pasture on peat (Whelan, 1976); soil of sugar beet crop (Breslin, 1979); soil under deciduous trees (unpublished data); soil in barley field (Emmanuel, 1977); fungal sporocarp (O’Connell, 1994); soil under Norway spruce (Heneghan, 1994; McCarthy, 2004); nest of Lasius flavus and pasture (Arroyo et al., 2015); soil under ash (Little & Bolger, 1995); soil under, Western hemlock, Lawson cypress and Sitka spruce (unpublished data). Counties: Carlow, Cork, Dublin, Kildare, Kilkenny, Limerick Wexford.

Published as part of Bolger, Thomas, Arroyo, Julio & Piotrowska, Katarzyna, 2018, A catalogue of the species of Mesostigmata (Arachnida, Acari, Parasitiformes) recorded from Ireland including information on their geographical distribution and habitats, pp. 1-220 in Zootaxa 4519 (1) on pages 51-52, DOI: 10.11646/zootaxa.4519.1.1, http://zenodo.org/record/2609574