Desoria rosea Fjellberg, 2010, sp. n.

• Main Author: Fjellberg, Arne
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Isotomidae; Desoria; Desoria rosea; glacier; Alaska
• Online Access: https://doi.org/10.5281/zenodo.3500422; http://treatment.plazi.org/id/504F2D6CFFD2FF8597BEF734FAB01884

Desoria rosea sp. n. (Figs. 64–70) Type material . Holotype (alc.) and 9 paratypes (3 in alc., 6 in two slides) from " Canada, B.C., Sparwood, 49o43'N, 114o57'W, 09.VI.1983. Plant debris in moist avalanche track, 1,900 m., A. Fjellberg 119/83" (INHS). Other material: Canada, B.C., Garibaldi Park, Panorama Ridge, 1.IX.1983. Wet moss at snow edge, 1,900 m. A. Fjellberg 387/83; Canada, Alberta, Kananaskis, Marmot Creek at Twin Fork, 29.VI.1983. Litter in spruce Krummholtz at tree line, 2,300 m. A. Fjellberg 193/83; Canada, Alberta, Kananaskis, French Creek, 16.V 1.1984, Moss & litter at stream bank, A. Fjellberg leg.; USA. Alaska, Juneau, mountains. between Mendenhall Glacier and Montana Creek Trail, 13.VII.1980. On ponds at snow bed, 950 m. alt., A. Fjellberg leg; USA, Washington, Wenatchee Mountains, Ingalls Lake, 23.VIII.1980. Hemlock litter, A. Fjellberg 181/ 80. Description . Size up to 1.2 mm. Colour white or faintly pinkish grey, eye-spots black. Ocelli 6+6, G and H absent. PAO elongated, slightly longer than diameter of nearest ocellus, with three associated setae (Fig. 64). Body shape normal, head not prognathous or hypognathous. Last two abdominal segments weakly separated. Ant. 2–3 with an increased number of additional sensilla, erect ventral sensilla present in full grown specimens (Figs. 65–66). Ant. 4 with bifurcated pin seta and a small globular organite. Basomedian field of labium usually with five setae (Fig. 67). Details of labrum, frontoclypeal field, maxillary palps, labial palps, mandibles and maxillae as in previous species. Body integument smooth; setal cover open and clearly "double" in anterior part of the body (short ordinary setae, longer dagger-like mesochaetae). Longest macrochaetae on tip of abdomen clearly serrated; median macrochaetae on abd. 5 more than three times as long as inner edge of last claw. Spine-like microsensilla as 11/001, rarely 11/101. Number of ordinary sensilla as 55/44456. Ventral tube on each side with 3 frontal and 5 lateral setae. Posterior side with 6–8 ...