Meriola penai Platnick & Ewing

González, María E., Grismado, Cristian J. & Ramírez, Martín J., 2021, A Taxonomic Revision Of The Spider Genus Meriola Banks (Araneae: Trachelidae), Zootaxa 4936 (1), pp. 1-113 : 72

Meriola penai Platnick & Ewing

Figs 3 a–c, 4e–f, 4h, 58–60, 94a

Meriola penai Platnick & Ewing, 1995: 20 , figs 44–48 (male holotype and female allotype from Tolhuaca , Malleco, Región de la Araucania (IX), Chile, in AMNH, not examined).

Diagnosis. Both sexes resemble those of M. tablas by the similar body shape and the relatively flat oval carapace and uniform abdominal pattern, but have depressed setal bases associated to large tubercles on the carapace surface (3A–C). Males ( Figs 59–60 ) can be easily recognized by the long RTA that is not widened at the base. Females ( Fig. 58 ) differ by the wide anterior hood ( Figs 58h, i ) and the poorly defined CDR chamber ( Platnick & Ewing 1995: fig. 48).

Description. Male and female described by Platnick & Ewing (1995).

Natural history and habitat. The specimens were found between 300–1200 m altitude, by beating shrubs of Fuchsia magellanica , Berberis sp. and Cupressaceae , with Berlese of leaf litter at the base of Lomatia hirsuta , and by fogging in forests of Nothofagus and Araucaria . Several female and male specimens were collected by pitfall traps.

Distribution. Known from Neuquén, Río Negro and Chubut provinces in Argentina and from regions VII to XI in Chile ( Fig. 94a ).

New records. ARGENTINA: Neuquén: Huiliches: Parque Nacional Lanín, Lago Huechulafquen, S 39.762631°, W 71.420759°, 20–23.I.1999, L. Compagnucci, 4 females, 10 imms. (MACN-Ar 31052). Río Negro: Bariloche: Parque Nacional Nahuel Huapi, sendero a Cerro La Mona, cerca de Lago Espejo Chico, S 40.580069°, W 71.702972°, elev. 890–940 m, 5.I.2011, Nothofagus dombeyi and Chusquea sp., M. Ramírez & V. Werenkraut, 1 female, sample MGM-00428 (MACN-Ar 33073). Parque Municipal Llao Llao, sendero a Villa Tacul, S 41.04383°, W 71.5492°, elev. 841 m, 15.I.2012, beating shrubs, M. Guala, 1 female, 1 male, temporary preparations MGM- 00339, MGM-00340 (MACN-Ar 32373). Parque Nacional Nahuel Huapi, cerca de Puerto Alegre, Lago Frías, S 41.04394°, W 71.79962°, elev. 811 m, 29.XII.2010, M. Ramírez, V. Werenkraut & S. Aisen, 1 female, sample MGM-00435 (MACN-Ar 33074). Parque Nacional Nahuel Huapi, Sendero Cerro López, orillas arroyo López, S 41.094258°, W 71.553097°, elev. 847 m, 17.I.2012, Fuchsia magellanica , Berberis sp. and Cupressaceae , beating shrubs, M. Guala, 1 female, temporary preparation MGM-00338 (MACN-Ar 32372). Parque Nacional Nahuel Huapi, sendero sobre Río Manso Inferior, cerca de desembocadura Lago Steffen, S 41.51625°, W 71.53567°, elev. 517 m, 1.I.2011, leaf litter at base of Lomatia hirsuta (radales), berlese, M. Ramírez, 1 male, sample MGM-00431 (MACN-Ar 33041). El Bolsón, Loma del Medio, S 41.977258°, W 71.554162°, I.2002, pitfall traps, P. Sackmann, 5 females, 3 males, 12 imms. (MACN-Ar 33077). Same locality, II.2002, pitfall traps, P. Sackmann, 1 female, 1 male, 1 imm. (MACN-Ar 33080). Same locality, III.2002, pitfall traps, P. Sackmann, 3 females (MACN-Ar 33079). CHILE: Región IX de La Araucanía: Provincia de Malleco: Parque Nacional Nahuelbuta, S 37.784643°, W 72.953286°, elev. 1100 m, 12.II.2005, forest of Nothofagus and Araucaria, M. Ramírez & F. Labarque , 1 female (MACN-Ar 10831). Same locality, elev. 1200 m, 12.II.2005, Nothofagus antartica , fogging, J. Barriga, 1 female (MACN-Ar 30354). Same data, Nothofagus dombeyi , fogging, J. Barriga, 1 female, temporary preparations MGM- 00443–00445 (MACN-Ar 30355). Same data, 22.XI.2004, Araucaria araucana and Nothofagus dombeyi , fogging, J. Barriga, 2 females (MACN-Ar 30359). Same locality, 7.XII.2001, canopy fogging, E. Arias et al., 1 female (CAS, CASENT 9059447). Monumento Natural Contulmo, S 38.012833°, W 73.187611°, elev. 360 m, 12–13.VII.2010, under rocks and bark, A. Ojanguren Affilastro, L. Piacentini, E. Soto & D. Valdivia, 1 female, sample LNP-04023 (MACN-Ar 28587). Monumento Natural Contulmo, S 38.034412°, W 73.196368°, 19.XII.1998, M. Ramírez, L. Compagnucci, C. Grismado & L. Lopardo, 2 females, 11 imms. (MACN-Ar 16449). Same locality, 19–21.XII.1998, M. Ramírez, L. Compagnucci, C. Grismado & L. Lopardo, 1 female, 2 imms., temporary preparation MGM-00230, MGM-00492 (MACN-Ar 16388), 1 female (MNHS). Provincia de Cautín: Villarica, Flor del Lago, S 39.166997°, W 72.106814°, 13.XII.2001, canopy fogging, E. Arias et al., 2 females (CAS, CASENT 9059375). Región XIV de Los Ríos: Provincia de Valdivia: Valdivia, S 39.817379°, W 73.242533°, 1983, E. Krahmer, 1 female (MNHS 845).

Figures

FIGURE 3. a, Meriola penai Platnick & Ewing, female, carapace, dorsal view (MACN-Ar 30355); b, detail of carapace texture, dorsal view; c, same, close up. d, M. mauryi Platnick & Ewing, male, detail of carapace texture, dorsal view (MACN-Ar 33023); e, same, closeup; f, detail of setae socket; g, detail of carapace texture next to lateral eyes, lateral view.

FIGURE 58. Meriola penai Platnick & Ewing, female (MACN-Ar 16388). a, habitus, dorsal view; b, same, ventral view; c, same, lateral view; d, prosoma, dorsal view; e, same, ventral view; f, same, lateral view; g, habitus, anterior view; h, epigyne, ventral view.

FIGURE 59. Meriola penai Platnick & Ewing, male (MACN-Ar 32373). a, habitus, dorsal view; b, same, ventral view; c, same, lateral view; d, prosoma, dorsal view; e, same, ventral view; f, same, lateral view.

FIGURE 60. Meriola penai Platnick & Ewing, male (MACN-Ar 32373). a, habitus, anterior view; b, left palp, ventral view; c, same, prolateral view; d, same, retrolateral view; e, male alive.

FIGURE 94. a, b. Known distribution of Meriola penai, M. setosa comb. nov., M. davidi, M. gallina and M. ramirezi in South America