Pseudachorutes armatus Babenko & Kuznetsova & Nakamori & Shveenkova 2021, sp. nov.

• Main Authors: Babenko, Anatoly, Kuznetsova, Natalia, Nakamori, Taizo, Shveenkova, Yulia
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Neanuridae; Pseudachorutes; Pseudachorutes armatus; kolyma river; Republic of Sakha; Yakutia
• Online Access: https://doi.org/10.5281/zenodo.4605148; http://treatment.plazi.org/id/BF05878D2326FFEBFF498FBBFECECD1A

Pseudachorutes armatus Babenko & Sveenkova sp. nov. Figs 15–24, Table 1 Type material. Russia: holotype, male, Republic of Sakha (Yakutia), Suntar-Khayata Mt. Range, upper reaches of Kyubyume River, vicinity of «Vostochnaya» weather station, 63°14.45’N 139°37.88’E, Dryas plant association, 1480 m alt., 28 July 2002. O. Makarova leg. [MSPU collection]. Paratypes, 7 females (including two immature ones) and 2 males from the same sample [MSPU collection]. Other material. 4 females and 4 males, Magadan Province, Bolshoi Annachag Mt. Range, upper reaches of Kolyma River, vicinity of former «Aborigen» field station [~ 61°56’N 149°40’E], Dryas plant association, August 2006. A. Alfimov leg. Diagnosis. Small sized species. Ant. IV with only 5 dorsal sensilla. PAO small, rounded with 5–7 vesicles. Buccal cone elongate, 2/334 labral setae, labium with full number of ordinary setae (12), seta L and two labial organites. Dorsal chaetotaxy of the parvulus type (i.e. three ordinary setae in dorso-external group on Th. II–III and two such setae in the same position on Abd. I–III). Mucro with lateral lamella almost reaching the tip. Adult and preadult males with 6 modified (strong and spine-like) setae between furcal base and genital orifice. Each anal valve with 2 hr-setae. Description. Length (without antennae) 0.54–0.64 mm. Colour grey-blue, not especially dark. Tegument granulation rather coarse and uniform. Antennae slightly shorter than head, Ant. III–IV fused dorsally, ventral separation well marked. Ant. IV with simple apical vesicle, external ms, subapical or and seta i present; dorsal side of Ant. IV with clearly differentiated, curved sensilla (Fig. 17), among them three inner sensilla (S1, S3–S4) and two outer ones (S7 and S8), ventral side with few sensilliform setae of various shape, including several ones with larger sockets (Fig. 16). Antennal organ of Ant. III typical (Fig. 18), inner sensilla small, sgv slightly curved and clearly longer than sgd, ventral ms and 18–19 common setae present on Ant. III. Ant. ...