Jacekaphorura furcata Babenko, 2013, sp. nov.

• Main Author: Babenko, Anatoly
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Entognatha; Collembola; Onychiuridae; Jacekaphorura; Jacekaphorura furcata; kolyma river
• Online Access: https://doi.org/10.5281/zenodo.6157649; http://treatment.plazi.org/id/03BEC878FFC4FFD8F8C9F974FAF5E877

Jacekaphorura furcata sp. nov. Figs 6–15 Type material . Holotype, female, Russia, Magadan District, Bolshoi Annachag Mts. Range, upper reaches of Kolyma River, field station “Aborigen” 61°56′ N 149°40′ E, moss and Larix /Pinus litter on slope down to stream, 25.vii.1979, A. Fjellberg leg. Paratypes, 22 specimens, same sample as holotype; male and juvenile, same area, slope with Dahurian larch ( Larix gmelinii) down from ridge to boggy area close to aufeis, litter, 25.vii.1979, V. Behan leg.; 3 juvenile females, same area, Olen’ River, north-facing slope, moss/lichen cover, 23.viii.2006, A. Alfimov leg. Description . Length up to 1.3 mm. Colour white. Body shape cylindrical, abdominal tip clearly broadened, Abd. VI small, poorly separated from and almost completely hidden under Abd. V (Fig. 6). Antennae thin, clearly longer than head. Ant. IV with spherical subapical organite and microsensillum set slightly above proximal whorl of chaetae (Figs 12). AO consisting of 5 long and narrow papillae, two smooth sensory rods, two granulated sensory clubs slightly differing in size and granulation, 5 guard chaetae, and lateral microsensillum (Figs 12–13). Ant. IV and II with 11–12 and 22–25 chaetae, respectively. PAO long with 32–39 simple vesicles (Fig. 14), abnormal variation rather frequent and specimens completely lack PAO or with only few lobes on one or both sides are seen. Labrum with 9 chaetae and 4 prelabral ones. Labium of A-type, with all 5 usual papillae (A–E), 7 long and 4 spiniform guards, and 6 proximal chaetae. Basal fields with 4+6 chaetae. Maxillary palp simple with two sublobal hairs. Dorsal pso formula as 32/133/33333, anterior pso on head set close together in a form of triangle, medial hind pseudocellus on head moved slightly forward (Fig. 6). Number of ventral pso 2/000/0111, ventral pso on head in usual position: medial and postero-lateral; ventral pso on abdomen as Fig. 10. Parapseudocelli (psx) are seen only on inner side of femora and sometimes on antennae laterally to AO. Upper subcoxae with ...