Arrhopalites lawrencei Palacios­Vargas & Zeppelini, 1995 : 12

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 : 16-17

Arrhopalites lawrencei Palacios­Vargas & Zeppelini, 1995: 12 –14, figs. 17–24.

Material examined: Holotype Ψ and 2 paratypes ΨΨ, 18 ­xi­ 1991. BRAZIL, Sao Paulo, Eldorado. Tapagem cave. Trajano leg., LESM. 2 paratypes ΨΨ, idem, MZUSP.

Caecus ­group ( Fig. 6 , A –K). Body setae as shown in figure D. Antennae of holotype 1.6 X as long as the cephalic diagonal. Ant. IV with six ringed 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 curved and blunt; Ape slender and acuminate; other setae normal and elongate. 1 + 1 eyes, no traces of pigments in mounted specimens. Dorsal cephalic spines present, chaetotaxy as figure J and table 3. Metatrochanteral organ (seta D 2) present (Fig. G). First unguis without inner tooth, all ungues without tunica. All unguiculi with corner tooth and apical filament exceeding unguis tip (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 with 3 + 2 cuticular spines, s0 present, chaetotaxy as in figure I and table 2. Female subanal appendage flattened and apically serrated.

Biogeographic zone 27.

Remarks: A. lawrencei is similar to A. gnaspinii and A. amorimi , and putatively share an ancestor that 3 + 2 anal valve cuticular spines. This species presents Id 1, Id 2 and Id 4 on dens.

Figures

FIGURE 6. A. lawrencei. 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).