Arrhopalites hennigii, 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 : 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, 02­x­1994. 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 D2 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 24a.

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 B2 and C6, 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 D2 is not modified into a sensory organ located in an elongate, triangular socket, and a trochanteral spine is present. The dental E1 and L1 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).