Narynia kolimiensis Martynova, 1981

Huang, Cheng-Wang, Potapov, Mikhail & Gao, Yan, 2010, Taxonomy of the Proisotoma complex. III. A revision of the genus Narynia (Collembola: Isotomidae) with a description of a new species from China, Zootaxa 2410, pp. 45-52 : 48

Narynia kolimiensis Martynova, 1981

Figs 3 , 6 , 8 .

Material. Three paratypes, Russia, Far East, Magadan area, nearby Seimchan, left bank of Kolyma River, steppe, 20.IX.1976, leg. V. Tshelnokov ( ZIN).

Additions to description. Ant.2 with 3 bms, Ant.3 with one bms and 5 sensilla (including one lateral). Ventral side of a head with 3+3 postlabial chaetae. Axial chaetae on Th. II 6–7, on Th. III 4–5, on Abd. I–III 3 (rarely 4) on each segment. Macrochaetae 11/2224(3), anterior macrochaeta on Abd.IV hardly developed. Tergal macrosensilla much shorter than ordinary chaetae. Macrosensilla on Abd.I–III positioned just posteriorly to Mdl ( Fig. 6 ). Abd.V with all sensilla equal and short, medial sensilla inserted adjacent to each other and between Md and Mdl ( Fig. 8 ). Sternum of Th.III without chaetae. Ti.1–3 with 21, 21, 24–25 chaetae respectively. Ventral tube with 4+4 laterodistal and 4 caudal chaetae. Tenaculum with 4+4 teeth and one chaeta. Dens with one anterior subapical chaeta and 3 posterior chaetae ( Fig. 3 ).

Remarks. Narynia kolimiensis is the only species of the genus which has no ventral chaetae on thorax.

Distribution. Known only from the type locality.

Figures

FIGURES 1 – 4. Narynia spp.: 1, Abd. VI of Narynia setosa, ventral view; 2 – 4, posterior side of furca of Narynia andreevae (2), Narynia kolimiensis (3), and Narynia setosa (4).

FIGURES 5 – 7. Sensillar chaetotaxy of Narynia: 5, Narynia setosa; 6, Narynia kolimiensis, 7, Narynia andreevae.

FIGURES 8 – 14. Dorsal chaetotaxy of Abd. V of Narynia: 8, Narynia kolimiensis; 9, Narynia setosa; 10 – 14, Narynia andreevae, variation (11 – 14).