Yichunentulus borealis (Nakamura, 2004),

Bu, Yun, Potapov, Mikhail B. & Yin, Wen Ying, 2014, Systematic and biogeographical study of Protura (Hexapoda) in Russian Far East: new data on high endemism of the group, ZooKeys 424, pp. 19-57: 31

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scientific name

Yichunentulus borealis (Nakamura, 2004)

comb. n.

Taxon classification Animalia Protura Acerentomidae

Yichunentulus borealis (Nakamura, 2004)  comb. n.

Baculentulus borealis  Nakamura, 2004: 17-20, figs 1-15. Syn.

Material examined.

1 female, 1 male, Locality 3, 25-IV-2010, coll. E. Sokolova & M. Potapov.


Russia (Far East, Khabarovsk Krai).


Body length 1300-1380 µm, foretarsus length 110 µm. We studied the new materials of Yichunentulus borealis  collected from type locality and redescribe the head chaetotaxy and body porotaxy. Head with d6 seta present, sd4 and sd5 sensilliform. Pronotum and prosternum without pores. Mesonotum with pores sl and al, metanotum with pores sl only. Mesosternum and metasternum each with single medial pore. Tergites I and VIII with pores psm only, II with pores psm and al, III–VII with pores psm, al and psl, IX–XI without pores, XII with single medial pore. Sternites I with single medial pore, II–IV without 1+1 anteromembranal pores, V and VI each with 1+1 posterior pores anterior to seta P1 and 1+1 anteromembranal pores, VII with single posterior pore asymmetrical located left or right, VIII–XI without pores, XII with 1+1 pores al.