Acerentulus Berlese, 1908: 122.

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 : 29

Taxon classification Animalia Protura Acerentomidae

Acerentulus Berlese, 1908: 122.

Type species.

Acerentomon confine Berlese, 1908.

Diagnosis.

Abdominal appendages II and III each with 3 setae, mesonotum and metanotum each with two pairs of anterior setae, foretarsal sensillum t1 claviform, sensillum b’ present, t3 willow-leaf shaped, sensillum b’ present, labial palpus with terminal tuft of setae, striate band on abdominal segment VIII well developed, and sternite VIII with 4/2 setae or with 4 setae only.

Remarks.

The genus Acerentulus has 47 species described in the world and most from Europe ( Szeptycki 2007; Shrubovych et al. 2012), and only five species ( Acerentulus kisonis Imdadaté, 1961, Acerentulus keikoae keikoae Imdadaté, 1988, Acerentulus keikoae capillatus Imdadaté, 1988, Acerentulus omoi Imdadaté, 1988 and Acerentulus sinensis Wu & Yin, 2007) were recorded in East Asia so far. Acerentulus kisonis Imdadaté, 1961 is new to RFE and very rare in the samples like in Japan ( Imdadaté 1988), which has single individual present in hundreds of specimens.