Vertagopus ceratus Potapov, Gulgenova & Babykina, 2016, sp. nov.

• Main Authors: Potapov, Mikhail, Gulgenova, Ayuna, Babykina, Marina
• Format: Other/Unknown Material
• Language: unknown
• Published: 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Isotomidae; Vertagopus; Vertagopus ceratus; Balan; Tundra; Siberia
• Online Access: https://zenodo.org/record/6053500; https://doi.org/10.5281/zenodo.6053500

Vertagopus ceratus sp. nov. Figs 1–8, 18, 22, 25, 26 Type material. Holotype, Russia (East Siberia): N Buryat Republic, Dzergynsky Nature Reserve, upper flow of Barguzin River, Balan-Tamur Range, ca. 1800 m alt., 55.36698°N, 111.55280°E, moss-lichen tundra, 09.ix.2012, coll. A.Gulgenova and M.Potapov (MSPU). Twenty paratypes, 10 specimens on slides and 10 specimens in alcohol, ibidem (MSPU and BSU). Other material. Russia (East Siberia): N Buryat Republic, Dzergynsky Nature Reserve, upper flow of Barguzin River, Balan-Tamur Range, ca. 1800 m alt., 55.36698°N, 111.55280°E, mossy sites, litter under Pinus pumila, dry stony slope with lichens and Empetrum, 09.ix.2012, coll. A.G. and M.P.; NW Buryat Republic, northern shore of Baikal Lake, peak nearby Goudjekit, subalpine belt with Pinus pumila, ca. 1600 m. alt., thick lichen spots, 15.viii.2013, coll. A.G. and M.P.; NW Buryat Republic, Barguzinsky Range, ca. 10 km W Barguzin, upper flow of Bol'shoi Chevyrkuy Stream, alpine belt, ca. 1970 m. alt., cold mosses in shadow between rocks, 19.viii.2008, coll. A.G. and M.P. Description. 8+8 ommatidia of which G and H much smaller and hardly visible (Fig. 1). PAO elliptical, about twice as long as nearest ommatidium (1.9–2.5). Maxillary outer lobe with 4 sublobal hairs and bifurcate palp. Labrum with 4 prelabral chaetae and about 6–7 on front, labral edge with four sharp ridges. Labial palp with all usual papillae and complete set (16) of guards (e 7 present), 4 proximal, 4 basomedian and 5 basolateral chaetae. Ventral side of head with 4–6+4–6 postlabial chaetae. Maxillary head with unmodified lamellae. Ant.I with 2 ventral microsens at base and 5–7 ventral sens of which 2–4 short in distal row (Fig. 1). Ant.II with about ten sens. Ant.IV with bifurcate subapical pin-chaeta and big globular organite. Body with differentiated smooth macrochaetae. Macrochaetae on Abd.V about as long as this segment length (0.9–1.1). Number of macrosens in full grown specimens as 4–5,4–5/4(3–5),6(5–7),6(5–7),7(6–8),6 (Figs 18, 22). Th.II–III ...