Laftrachia, Porto & Derkarabetian & Giribet & Pérez-González, 2024

Porto, Willians, Derkarabetian, Shahan, Giribet, Gonzalo & Pérez-González, Abel, 2024, Systematic revision of the South American “ Nuncia ” (Opiliones, Laniatores, Triaenonychidae), ZooKeys 1207, pp. 1-149 : 1-149

Genus Laftrachia gen. nov.

Figs 56 , 57 , 58 , 59 , 60 , 61

Etymology.

The specific epithet derives from Laftrache (which in Mapudungun, Mapuche Language, means “ little people ”) also known as Caftranche, a mythical being present in Mapuche mythology. Feminine grammatical gender.

Diagnosis.

This monotypic genus is characterized by its small size, yellow-orange coloration, a prominent ectal-distal process on the pedipalp femora, a low ocularium, and distinct male genital morphology. The male genitalia exhibits an arc-shaped ventral plate and a pair of parallel projections within the capsula interna. These distinguishing features differentiate it from other genera within the family Triaenonychidae .

Type species.

Laftrachia robin sp. nov.

Included species.

Laftrachia robin sp. nov.

Distribution.

Chile: Bío-Bío Region (Fig. 4 D ).

Figures

Figure 4. Maps showing the distribution of the species used in this work. South America (Chile and western Argentina inset). Chile in green, Argentina / South America in grey. Terrestrial ecoregions (following Olson et al. 2001) highlighted in yellow (Chilean Matorral) and orange (Valdivian temperate forests).

Figure 56. Laftrachia robin sp. nov. habitus, male A dorsal view C lateral view E ventral view. Female B dorsal view D lateral view F ventral view. Scale bars: 500 µm. Species of Clade C, see Fig. 3.

Figure 57. Laftrachia robin sp. nov. male, SEM images of habitus A dorsal view B lateral view C, D ventral view. Scale bars: 500 µm.

Figure 58. Laftrachia robin sp. nov. chelicerae: mesal A ectal B Pedipalps: mesal C ectal D. Scale bars: 500 µm.

Figure 59. Laftrachia robin sp. nov. legs I A II B III C IV D. Scale bars: 200 µm.

Figure 60. Laftrachia robin sp. nov. penis: ventral A, B apical C lateral D, E dorsal F, G. Scale bars: 100 µm (A, D, E, F); 20 µm (B, C); 50 µm (G).

Figure 61. Laftrachia robin sp. nov. penis: ventral A apical B lateral C dorsal D. Colors: ventral plate (yellow), capsula externa (blue), capsula interna (red). Scale bars: 20 µm (A, B); 100 µm (C, D).