Arrhopalites octacanthus Yosii, 1970: 14­15

Zeppelini, Douglas, 2004, The genus Arrhopalites (Collembola, Arrhopalitidae) in Asia, with the description of two new Japanese species of Yosiis collection, Zootaxa 430 (1), pp. 1-26 : 7

Arrhopalites octacanthus Yosii, 1970: 14­15 , fig. 9.

Material examined: Paratype 1 ♀, 10­vi­1967, JAPAN, Tokushima, Zenzyokutsu cave , Yoshida, leg., MHN .

Principalis­group ( Fig. 7 , A­K). Body setae as in figure D. Ant. IV with seven subsegments (Fig. A), apex with a capitate sense rod (Fig. B). Antenna ~ 1.7X the cephalic diagonal. Ant. III with basal swelling; sense organ (Fig. C) with 2 parallel sense rods in a single shallow pit; seta Aai club­shaped and blunt; Api and Ape slender and bristle­like; Ae, Ap and Ai normal elongate setae. 1+1 light brownish, eyes. Cephalic setae A3, L1­2, IL1­3 and M4­5 spinelike (Fig. J). Metatrochanteral organ (seta D2) elongate (Fig. G). Second and third ungues with a clear inner tooth, no tunica seen (figs. K, a­c). Unguiculi without corner tooth, apical filament exceeding ungues tip. Corpus tenaculum with two setae (Fig. H). Dens with 6 dorsal E setae, E1­5 spinelike; L1­3 spinelike, L4 absent; D1­2 present, Id3 absent (Fig. E); 4 ventral setae rows (3,2,1,1) (Fig. E). Mucro narrow, gutterlike, both edges serrate (Fig. F). Anal valve without cuticular spines; setae C1­9 swollen basally, C3­4 lamellate, chaetotaxy (Fig. I). Female subanal appendage apically branched or deeply serrate (Fig. I).

Biogeographic zone 3a.

Remarks: This species differs from A. changbaishanensis , its presumably closest species, by the lack of dental Id3, E7, corner tooth in all unguiculi, and Ant. IV divided into eight subsegments. See also remarks for A. yosii sp. n.

Figures

FIGURE 7. A. octacanthus. A, fourth antennal segment; B, apical subsegment of fourth antennal segment; C, apical sensory organ of third antennal segment; D, body setae (a, anterior, b, posterior); E, ventral and dorsal chaetotaxy of the dens; F, mucro; G, metatrochanteral organ; H, tenaculum; I, anal valve chaetotaxy; J, posterior cephalic chaetotaxy; K, foot complex (a, first leg, b, second leg, c, third leg).