Habitat Type: Terrestrial
Comments: Habitat requirements of H. dromedarius are poorly known. In Washington, the species has been reported from elevations of 238 m (780 feet) to 1436 m (4710 feet; Branson 1972); most reported localities are from elevations above 700 m. The Washington localities are in mature and old-growth forest, but at several high-elevation sites on the east slope of the Cascade Mountains the slugs occur on talus substrates in sparsely wooded, subalpine habitats (Ovaska et al. 2002). It is unknown whether the species uses earlier seral stages within logged landscapes, and its habitat relationships have not been examined.
The Washington localities are in mature and old-growth forest, but at several high-elevation sites on the east slope of the Cascade Mountains the slugs occur on talus substrates in sparsely wooded, subalpine habitats (Ovaska et al. 2002). It is unknown whether the species uses earlier seral stages within logged landscapes, and its habitat relationships have not been examined.
The Washington localities are in mature and old-growth forest, but at several high-elevation sites on the east slope of the Cascade Mountains the slugs occur on talus substrates in sparsely wooded, subalpine habitats (Ovaska et al. 2002). It is unknown whether the species uses earlier seral stages within logged landscapes, and its habitat relationships have not been examined. On Vancouver Island, the elevation of the 6 known localities ranges from near sea-level to ca. 1060 m. The three low elevation localities are on the wet, west coast of the island; the remaining 3 localities are from elevations >700 m in the southern interior of the island. Five of the localities are in remnant patches of old-growth, coniferous forest dominated by Western Hemlock (Tsuga heterophylla) and Western Redcedar (Thuja plicata; Fig. 5). The remaining site (in the outskirts of the village of Bamfield on the west coast of the island) is in a selectively logged forest. This site contains attributes of older forests, including some large trees and abundant coarse woody debris. The forest floor at all the sites is composed of thin, compact, needle litter, and most sites contain abundant coarse woody debris, including large-diameter pieces (COSEWIC, 2003).