日本産普通多足類の後胚発生VI : ヒトフシムカデの1新種

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In 1959 the author collected a series of 12 small lithobiomorphous centipeds under fallen leaves in this area. These specimens proved to be a new species of the genus Monotarsobius, The description of which follows. Monotarsobius nihamensis sp. nov. Body length: 7-9.7 mm. Colour: Head and last two pairs of legs (except prefemur) are yellowish brown. Dorsal surface of body is violecent brown or deep brown. Antennae: consisting of 19 articles in female and 20 articles in male. Cephalic plate: Ratio of head length to width is 1:1. Ocelli: consisting of 6 or 7 in two series. Prosternal teeth: 2+2, a line of outside is in Figure G. Tergite: all tergites have not posterior angles. Posterior margins of 3, 5, 8, 10, 12, 14 and 15 of tergites are incurved. Coxal pores: Present on legs 12-15, i.e., 1, 2, 2, 2 small circular. Legs: 1-13. All tarsi are entirely undivided. Tibia of anal legs of male with a lump on posterior angle of inner (Figs. H to K). Spinulation: of first legs (111)/(111); of fifth (1 2 1-2)/(0-1 2 2), of tenth (0-1 2 2)/(0-1 2 1) and last four legs are shown in Table 1. Plectrotaxy of female holotype is shown in Table 2. Female gonopods: basal spurs 2+2, claw tridentate.Holotype: 1♀; Allotype: 1♂; Paratypes: 10 specimens. All the types were collected by the author. Locality: Oshima, Niihama, Ehime Pref. 19, February 1959. Types are preserved in the author's collection.
1960-09-15