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

• Main Authors: Potapov, Mikhail, Babenko, Anatoly, Fjellberg, Arne
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Collembola; Entomobryomorpha; Isotomidae; Scutisotoma; Scutisotoma stachanoremi; Cape Krusenstern; Nome; Alaska
• Online Access: https://doi.org/10.5281/zenodo.5073712; http://treatment.plazi.org/id/039587D4FFADFFCF1373FCB471CFFD05

Scutisotoma stachanoremi sp.n. Figs. 127–133 Type material. Holotype: ♀, Alaska, Nome, wet moss with Equisetum , 01.ix.1976, leg. R. Greenberg. Paratypes: 1 ex., same sample. 3 exx., Alaska, Cape Krusenstern, dry sandy beach ridge with moss, lichen, grass, Artemisia sp., 03.ix.1976, leg. R. Greenberg. Stored in ONC (holotype and 2 paratypes) and MSPU (2 paratypes). Description. Size 0.7–0.8 mm. Colour background yellow-brown, tergites and ocular spots with diffuse dark pigment, ventral side and extremities paler. Cuticle with fine but visible granulation. Ocelli 5+5, subequal (Fig. 129). PAO elliptical, narrow and without constriction, as long as U 3. Maxillary outer lobe with 4 sublobal hairs and bifurcate maxillary palp. Labral formula 4/554. Labium with a full set of papillae and guards. Proximal field with 3 chaetae, basomedian field with 4. Ventral side of head with 3+3 postlabial chaetae. Ant.1 with 2 basal microsensilla (bms, dorsal and ventral), and 2 ventral sensilla (s). Ant.2 with 3 bms and 1 laterodistal s, Ant.3 with 1 bms and 5 distal s (AO + one lateral s). Guards of AO clearly longer than inner pair of sensilla. In the single observed male additional sensilla on Ant.2–3 were not seen. Sensilla on Ant.4 hardly differentiated, subapical organite small. Dorsal axial chaetom of Th.II–Abd.III as 6–7,5–6/3–4,3–4,3–4. Thorax without ventral axial chaetae. Macrochaetae differentiated laterally on Th.II–III and on tip of abdomen. Medial macrochaetae on Abd.V are 0.3–0.4 as long as tergite. Sensilla on tergites rather long (about 1/2 of length of ordinary chaetae). Sensillary formula 33/22224 (s) and 11/111 (ms). On Th.II–III one sensillum of the lateral group always set in a posterior position (Fig. 131). Sensilla on Abd.I–III in mid-tergal position (medial sensillum on Abd.III slightly behind middle of the tergite). Microsensillum on Abd.II–III set close to the lateral sensillum (Figs. 130). One of the medial sensilla (accp 2) on Abd.V is in anterior position (Fig. 132). Unguis simple, without inner ...