Desoria albicornis 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 albicornis; glacier; Alaska
• Online Access: https://doi.org/10.5281/zenodo.3509495; http://treatment.plazi.org/id/504F2D6CFFDCFF8F97BEF443FAB51E29

Desoria albicornis sp. n. (Figs. 19–29, 111, 115C) Type material (all in alcohol, sex not checked). Holotype and 55 paratypes from: "Alaska, mountains between Mendenhall Glacier and Montana Creek Trail, 58o29'N, 134o40'W, on melt-water ponds, 975 m. alt., 13.VII.1980, A. Fjellberg leg." (INHS). Description . Body size up to 1.3 mm. Body shape cylindrical, slender, with relatively short legs (Fig. 115 C). Head shape normal. Abd. 5–6 weakly separated, with a clear break in setal cover. Colour uniformly violet black, antennae pure white apart from dark proximal half on ant. 1. Head with a transverse row of four small white spots (Fig. 111). Tibiotarsi paler than rest of the legs. Each side of head with 6 large ocelli and two very small ones. PAO oval, as long as diameter of nearest ocellus, with three associated setae (Fig. 24). Ant. 1 on ventral side with up to 10 long slender sensilla and 2–3 short ones in apical position. Ant. 2 with an enlarged sensillum in lateral position (Fig. 22). Ant. 3 organ normal, with 4 dorsoapical sensilla and 3 ventrolateral (Fig. 23). Ant. 4 with bifurcate subapical pin seta and a short rod-shaped subapical organite in a pit. Labrum with 4/554 slender setae, apical edge with 4 low ridges and a composite ventroapical ciliation (Fig. 29). Central part of frontoclypeal field with 4 (rarely 5) setae (Fig. 28). Maxillary outer lobe with bifurcate palp and 4 sublobal setae. Labial palp with apical papillae A–E present, 4 proximal setae; guard e7 present at base of papilla E; terminal seta of the papillae shorter than the guards. Lateral process (l.p.) on papilla E strong, finger-like. Hypostomal papilla with H shorter than h1/h2. Basal fields of labium with 4 median and 5 lateral setae. Head with 4+4 postlabial setae along ventral line. Mandibles normal, with moderately strong teeth. Maxillae with 3-toothed capitulum and 6 lamellae covered with fine denticles only. Lamellae short, not projecting beyond tip of capitulum. Integument smooth, without visible granulation. The cover of body ...