Coecobrya akiyoshiana Yosii 1956

Coecobrya akiyoshiana Yosii, 1956

Figs 52–58

Sinella (Coecobrya) akiyoshiana Yosii, 1956

Coecobrya akiyoshiana Zhang, Deharveng & Chen, 2009

Type locality. Taisho-Do, Akiyoshi, KreisYamaguti, Japan.

Material examined. Two specimens on slides provided by Yoshii. Deposited in CARC.

Additions to original description. Dorsal cephalic chaetotaxy with 4 antennal (An), 4 median (M), and 5 sutural (S). Labial chaetae as mrel1l2, all smooth; chaeta r 0.55 length of chaeta m (Fig. 52). Tenent hairs short and pointed; most distal “smooth” inner seta on tibiotarsus III weakly ciliate (Fig. 53). Manubrial plaque with 2 pseudopores and 3 ciliate chaetae (Fig. 54). Distal smooth part of dens 0.67–0.80 times as long as mucro (Fig. 55).

Th.II with 3 (m1, m2, m 2i) medio-medial, 2 (m4, m4p) medio-lateral, and 18 mac; p4 and p 4i as mac. Th.III with 17–21 central mac and 3 (m5, a6, a 6i) mac in Gr. III (Fig. 56). Abd.I with 5(4) (m2–4, m 2i, m4p) mac; mac m4p sometimes absent. Abd.II with 3 (m3, m3e, m3ep) central and 1 (m5) lateral mac. Abd.III with 1 (m3) central and 3 (am6, pm6, p6) lateral mac (Fig. 57). Abd.IV with 5 (I, M, A5, A6, B5) central and 4 (F1, E2–4) lateral mac (Fig. 58).

Ecology. Known only from caves.

Distribution. Japan.

Remarks. C.akiyoshiana is closest to another Japanese cave species C. spinidentata Yosii, 1942, but differs from the latter in the unguis (elongate in the former and not elongate in the latter). Detailed chaetotaxy presented here is almost identical with C. spinidentata with chaetotaxy of Abd.IV unknown in the latter. C. akiyoshiana is also similar to C. ishikawai Yosii, 1956, but can be separated by the unpaired inner tooth on unguis (absent in C. ishikawai).