Arrhopalites hennigii

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 : 4-6

Pararrhopalites hennigii n. comb.

Syn.: Arrhopalites hennigius Palacios­Vargas & Zeppelini, 1995: 16 –18, figs. 33–40.

Etmology. Pararrhopalites hennigii is a correction of generic placement and of latinization for the original name Arrhopalites hennigius (Palacios­Vargas & Zeppelini, 1995: 16) .

Material examined: Holotype Ψ and 1 paratype Ψ, 02­x­ 1994. MEXICO, Guerrero, Tierra Colorada. Papagayo II cave. Zeppelini leg., LESM.

Fig. 1 , A–K. Body setae as shown in figure D. Antennae of holotype twice 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 club­shaped and blunt; Api and Ape long, slender, and acuminate; Ae, Ap and Ai normal. 2 + 2 eyes, no traces of pigments in mounted specimens. Dorsal cephalic setae spinelike, chaetotaxy as figure J and table 3. Metatrochanteral organ absent, seta D 2 normal, trochanteral spine present with a membranous wing (Fig. G). All ungues without inner tooth and tunica. All unguiculi with a small corner tooth, apical filament exceeding unguis tip (Figs. K, a–c). Corpus tenaculum with one seta (Fig. H). Dens 3,2,1,1 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 pointing to anal opening.

Biogeographic zone 24 a.

Remarks: P. hennigii n. comb. is part of a group of four similar species from Brazil and Mexico originally described as Arrhopalites ( A. hennigii , A. wallacei , A. christianseni , and A. papaveroi ), the lack of anal valve setae B 2 and C 6, shared by all of four species, units the group. These species present the subanal appendages pointing to anal opening, instead of pointing to genital pore, the metatrochanteral seta D 2 is not modified into a sensory organ located in an elongate, triangular socket, and a trochanteral spine is present. The dental E 1 and L 1 are not spinelike. Those features exclude all these four species from the genus Arrhopalites , as will be discussed later in this work, and place them in the genus Pararrhopalites Bonet & Tellez, 1944.

Figures

FIGURE 1. P. hennigii 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).