Lautaria, 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 Lautaria gen. nov.

Figs 62 , 63 , 64 , 65 , 66 , 67

Etymology.

The genus name honors Lautaro (Leftraru), a renowned toqui (Mapuche military leader) who played a significant role in the Arauco War during the early stages of the Spanish conquest of what is now Chile. The name is derived from Mapudungun, with “ lef ” meaning “ fast ” and “ traru ” or “ bald traro. ” The feminine grammatical gender is used for the generic epithet.

Diagnosis.

Lautaria can be distinguished from all other genera of Triaenonychidae by the unique male genital morphology (Fig. 66 , 67 ). This includes a capsula externa with an apical region divided into two halves, forming a 90 ° angle in relation to the axis of the pars basalis. The external morphology exhibits striking similarities to the genus Chilenuncia , and other members of clade C.

Type species.

Lautaria ceachei sp. nov.

Included species.

Lautaria ceachei sp. nov.

Distribution.

Chile: Ñuble Region (Fig. 4 E ).

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 62. Lautaria ceachei 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 63. Lautaria ceachei sp. nov. male, SEM images of habitus A dorsal view B lateral view C, D ventral view. Scale bars: 1 mm (A, B, C); 500 µm (D).

Figure 64. Lautaria ceachei sp. nov. chelicerae: mesal A ectal B Pedipalps: mesal C ectal D. Scale bars: 200 µm (A, B); 500 µm (C, D).

Figure 65. Lautaria ceachei sp. nov. legs I A II B III C IV D. Scale bars: 500 µm.

Figure 66. Lautaria ceachei sp. nov. penis: ventral A, B apical C lateral D, E dorsal F, G. Scale bars: 200 µm (A, D, F); 100 µm (B, E, G); 50 µm (C).

Figure 67. Lautaria ceachei sp. nov. penis: ventral A apical B lateral C dorsal D. Colors: ventral plate (yellow), capsula externa (blue), capsula interna (red). Scale bars: 1 mm.