Eosentomon topochi Imadaté

Nakamura, Osami, 2010, Taxonomic revision of the family Eosentomidae (Hexapoda: Protura) from Japan 2701, Zootaxa 2701, pp. 1-109 : 98

Eosentomon topochi Imadaté

Eosentomon topochi Imadaté, 1964a: 56 , figs. 24–27; Imadaté, 1974b: 293, figs. 152–153.

Specimens examined. The holotype was not found; therefore, other specimens listed as " E. topochi ?" in Imadaté & Kinjo (1985) and Imadaté & Ohnishi (1979, 1993) were studied.

Remarks. One male from Pankenai (NSMT–Ap 227, Hokkaido, 3-X-1974, H. Tamura leg., site No. 11 in Imadaté & Ohnishi (1979)), was not in good condition and characters could not be observed. Females from Okoppe (Hokkaido, 6-VIII-1979, J. Ohnishi leg., Imadaté’s Proturan Collection No. 8054 1, site No. 54 in Imadaté & Ohnishi (1993)) and Soranuma–dake (Hokkaido, 22-VII-1979, O. Nakamura leg., in my collection, site No. 97a in Imadaté & Ohnishi (1993)) were also in poor condition. However, the female caput processus in both specimens was visible; it is almost straight, being different from the S-shaped sclerotization on the processus sternalis in the original description of E. topochi .

In one female from Hagurosan (Yamagata, 3-XI-1977, K. Shirahata leg., Imadaté’s Proturan Collection No. 4111 31, site No. 111 in Imadaté & Kinjo (1985)), the foretarsus possessed sensillum b'1, abdominal tergite VII had three pairs of anterior setae (A2, A4, A5) and abdominal sternite VIII possessed two anterior and seven posterior setae. These characters were different from the original description of E. topochi . Therefore, these females are certainly different forms .

Distribution. Japan (Hokkaido and Honshu).