Arrhopalites christianseni, Zeppelini, Douglas, 2006

Zeppelini, Douglas, 2006, The genus Arrhopalites Börner, 1906 (Collembola, Appendiciphora, Arrhopalitidae) in the Neotropical Region, with description of four new cave species from Brazil, Zootaxa 1124, pp. 1-40 : 7-8

Pararrhopalites christianseni n. comb.

Syn.: Arrhopalites christianseni Palacios­Vargas & Zeppelini, 1995: 20 –22, figs. 49–56.

Material examined: Holotype Ψ and 1 paratype Ψ, 16­vii­1994. MEXICO, Yucatan, Tekax. Actun Toh cave. Palacios­Vargas and Zeppelini leg., LESM. 4 paratypes ΨΨ, 26­x­1994 and 29­x­1994. MEXICO, Yucatan, Tekax, Rancho Sambula cave. Palacios­Vargas and Zeppelini leg., LESM.

Fig. 2, A–K. Body setae as shown in figure D. Antennae of holotype ~1.6X as long as the cephalic diagonal. Ant. IV with nine subsegments (Fig. A), apex with a capitate sense rod (Fig. B). Ant. III without basal swelling; sense organ (Fig. C) with sense rods in a single pit; seta Aai, short, club­shaped and blunt; Ape long, slender, and acuminate; other setae normal. 2+2 eyes, no traces of pigments in mounted specimens. Dorsal cephalic setae strongly spinelike, chaetotaxy as figure J. Metatrochanteral organ absent, seta D2 normal, trochanteral spine present with a membranous wing (Fig. G). All ungues with a very small inner tooth, no tunica. First and second unguiculi with apical filament exceeding unguis tip, second and third with a small corner tooth (Figs. K, a–c). Corpus tenaculum with two setae (Fig. H). Dens 3,2,2,1,1 ventral setae, chaetotaxy as in figure E and table 3. Mucro narrow, gutter­like, both edges serrate (Fig. F). Anal valve without cuticular spines; anal valve chaetotaxy as in figure I and table 2. Female subanal appendage acuminate, wingged apically, pointing to anal opening.

Biogeographic zone 24a.

Remarks: P. christianseni n. comb. is similar to P. hennigii n. comb. and P. wallacei n. comb. based in the same basic features as described before. P. christianseni differs from other species in the shape of the female subanal appendages.

P. christianseni n. comb. 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).