Arrhopalites uenoi Yosii, 1956: 100

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 : 8

Arrhopalites uenoi Yosii, 1956: 100 , fig. 345­355

Material examined: lectotype ♀, 5­vii­1954, JAPAN, Iwate, Iwaizumi, Akka Do cave . S. Uéno leg., MHN .

Pygmaeus­group s. str. ( Fig. 8 , A­J). Body setae as in figure C. Antennae of Lectotype ~ 4X as long as the cephalic diagonal. Ant. IV with fifteen subsegments. Ant. III without basal swelling; sense organ (Fig. B) with 2 parallel sense rods in separate pits; seta Aai short and acuminate; Api and Ape short and acuminate; Ae, Ap and Ai normal elongate setae. No eyes or pigment. No cephalic spines, seta M5 absent (Fig. I). Metatrochanteral organ (seta D2) elongate (Fig. F). All ungues slender, without inner tooth or tunica. First and second unguiculi with a small corner tooth, apical filament short on first and second unguiculi, absent on third (Figs. J, a­c). Corpus tenaculum with two setae (Fig. G). Dens with 7 dorsal E setae, E1­2 spinelike; L1­3 spinelike, L4 absent; D1­2 and Id1­4 present (Fig. D); 4 ventral setae rows (3,2,1,1) (Fig. D). Mucro narrow, gutter­like, both edges serrate, slightly narrowed near the apex (Fig. E). Anal valve without cuticular spines; C setae not swollen basally, chaetotaxy (Fig. H). Female subanal appendage rod like, flattened and serrate at the apex.

Biogeographic zone 3a.

Remarks: A. uenoi is the most troglomorphic species known from Asia. It is easily recognized by lacking eyes and the enormous number of Ant. IV subsegments.

Figures

FIGURE 8. A. uenoi. A, fourth antennal segment; B, apical sensory organ of third antennal segment; C, body setae (a, anterior, b, posterior); D, ventral and dorsal chaetotaxy of the dens; E, mucro; F, metatrochanteral organ; G, tenaculum; H, anal valve chaetotaxy; I, posterior cephalic chaetotaxy; J, foot complex (a, first leg, b, second leg, c, third leg).