Arrhopalites alticola Yosii 1970: 15­17

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 : 3

Arrhopalites alticola Yosii 1970: 15­17 , fig. 10.

Material examined: holotype ♀ and 2 paratypes ♀♀, 14­viii­1967. JAPAN, Nagano, Shigakogen. Yosii leg. Muséum dhistoire Naturelle, Ville de Genève (MHN) .

Principalis­group ( Fig. 1 , A­J). Body setae as shown in figure C. Antennae of holotype ~ 2X as long as the cephalic diagonal. Ant. IV with five subsegments, apex with a capitate sense rod. Ant. III slightly swollen basally; sense organ (Fig. B) with 2 parallel sense rods in a single shallow pit; seta Aai club­shaped and blunt; Api and Ape slender and acuminate; Ae short and acuminate; Ap and Ai as a normal elongate setae. 1+1 eyes in a dark pigment patch, pigment sparse all over the body. Dorsal cephalic setae not spinelike, M5 absent (Fig. I). Metatrochanteral organ (seta D2) elongate (Fig. F). Second and third ungues with an inner tooth and a weak tunica. First and second unguiculi with corner tooth, and apical filament exceeding unguis tip (Figs. J, a­b). Corpus tenaculum with two setae (Fig. G). Dens with 7 dorsal E setae, E1 and E3 spinelike; L1­3 spinelike; D1­2 and Id1­4 present (Fig. D); 4 ventral setae rows (3,2,1,1) present (Fig. D). Mucro narrow, gutter­like, both edges serrate (Fig. E). Anal valve without cuticular spines; setae C1­C8 not swollen basally chaetotaxy (Fig. H). Female subanal appendage apically branched.

Biogeographic zone 3a.

Remarks: This species is similar to A. kolymensis in several features, Ant. IV subsegments number, dental setae E1 and E3 strongly spinelike, female subanal appendage shape, and can be distinguished from it by the Ant. III basal swelling, lacking cephalic spines and dental Id3.

Figures

FIGURE 1. A. alticola. 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).