Scutisotoma schisti Potapov & Babenko & Fjellberg 2006, sp.n.

• Main Authors: Potapov, Mikhail, Babenko, Anatoly, Fjellberg, Arne
• Format: Other/Unknown Material
• Language: unknown
• Published: 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Collembola; Entomobryomorpha; Isotomidae; Scutisotoma; Scutisotoma schisti; Tuva; River Bay; Dynkengda; taiga; Taimyr; Tundra; Siberia
• Online Access: https://zenodo.org/record/5073684; https://doi.org/10.5281/zenodo.5073684

Scutisotoma schisti sp.n. Figs. 25, 87–98 Type material. Holotype: ♀, Russia, Siberia, Putorana plateau, Dynkengda Mt., vicinity of Sobach’e lake (69 o 19’N, 91 o 46’E), 700–750 m alt., alpine site with scarce vegetation, pitfall traps, 28.vii.– 13.viii.1996, leg. A. Babenko. Paratypes: 15 exx., same locality (MSPU). Other material. 4 exx., Russia, Taimyr, Uboinaya River (73 o 37’N, 82 o 21’E), fresh flood debris in river bay, 09.viii.1990, leg. A. Fjellberg. Numerous specimens, Russia, Southern Siberia, SE Altai Mts., Kuray, Bol'shoy Kuraysky Range, 3100 m alt., on pools after the rain, 17.vi.1966, leg. S. Stebaeva. 5 exx., Russia, Southern Siberia, Tuva Republic, Mongun-Taiga Range, Mugur-Aksi, mountain tundra, 23.vii.1993, leg. S. Stebaeva. 6 exx., Russia, Southern Siberia, Tuva, Kup-Khol Lake, sedge bog, 20.vii.2001, leg. S. Stebaeva. 1 ex., Russia, Southern Siberia, West Sajan Mts., Usinsky Tract, Olen’ya River, mountain tundra, 31.v.1962, leg. S. Stebaeva (MSPU). Description. Size 0.8–1.2 mm. Usually dark-violet, extremities paler. Cuticle with fine but visible primary granulation. Ocelli 8+8, G and H smaller. PAO elliptical, not constricted, about twice as long as ocellus diameter or 0.8–1.3 of inner unguis length (Fig. 90). Maxillary outer lobe with 4 sublobal hairs, maxillary palp bifurcate. Labral formula 4/ 554. Labium with a complete set of papillae and guards. Proximal field with 3 chaetae, basomedian field with 4 chaetae. Ventral side of a head with 4–6+4–6 postlabial chaetae. Ant.1 with 2 basal microsensilla (bms, dorsal and ventral), and 2 ventral sensilla (s). Ant.2 with 3 bms and one laterodistal s, Ant.3 with one bms and 5 distal s (AO and one lateral s). Guards of AO clearly longer than inner pair of sensilla (Fig. 25). Males with some additional sensilla on Ant.2–3. Sensilla on Ant.4 hardly differentiated, the shape of the subapical organite either big and spherical (Taimyr), or small (southern Siberia) (Figs. 93, 94). All abdominal tergites clearly separated. Dorsal axial chaetom of ...