Phthiracarus validus Niedbała, 1986 Geographic Location: AK: Kenai Peninsula, Skilak Lake (Niedbała 2002); BC: Vancouver Is., McMillan PP, Cathedral Grove, 49°18’N, 124°40’W; Little Qualicum Falls PP; Cedar District, South of Nanaimo; Manning PP, Sapello Grove, Rhododendron Flats; Ilgachug Mtns., Pan Creek, Moraine Gravel; Hwy 6, 2.4 mi South Silverton (Niedbała 2002); AB: Waterton Lakes NP, Bertha Trail; Jasper NP, Sunawapta Falls; Johnson Canyon (Niedbała 2002); ABMI Sites (Walter et al. 2014); ON: Backus Woods Conservation Area, 42°39’N, 80°28’W; Cedar Grove, SW North Gower (Niedbała 2002); QC: Gatineau Park, Old Chelsea (Notch Rd.); Parc National du Mont-Orford; Parc National de Frontenac; Cedarville; 4 km N Kazabazua (Niedbała 2002); NB: Kouchibouguac NP (Niedbała 2002); NS: Cape Breton Highlands NP, North Mountain Bog; nr. Ingonish; Aspy River, North Branch; Skyline Trail; Pleasant Bay; Lone Shieling; Sammy’s Barren; Aspy River Trail, Buttereau Trail; Corney Brook Camp; Clyburn Brook (Niedbała 2002). Habitats: coastal forests (Douglas fir, Big-leaf maple, Western redcedar, hemlock, mixed maple and alder litter); fern litter; mixedwood boreal forests (pine, Red pine, lodgepole, spruce, Yellow birch, maple, beech, basswood, alder, litter); bear dung; moss; tamarack litter with Rhododendron, Vaccinium; lichens. Distribution: Nearctic.