Description of two new species of Lycinus (Araneae: Nemesiidae)

Abstract

Two new species of Lycinus Thorell, 1894 are described in this paper, L. portoseguro sp. nov. and L. choros sp. nov. Lycinus portoseguro sp. nov. is based on male and female from Porto Seguro, state of Bahia, Northeastern Brazil. This is the first record of a species of Lycinus from Brazil. Males of L. portoseguro sp. nov. differ from the remaining species of the genus by the presence of a retrolateral megaspine on tibia I and by the short embolus. Females can be distinguished by the scopulae divided on tarsi II. Lycinus choros sp. nov. is based on one male from La Serena, IV Region (Coquimbo), Chile. It is the eighth species described from this country. L. choros sp. nov. resembles L. epipiptus (Zapfe, 1963) by the longer embolus and differs from it by the short palpal tibia and by the scopulae undivided on male tarsi I-II

Cladistic reanalysis and historical biogeography of the genus Lycinus Thorell, 1894 (Araneae: Mygalomorphae: Nemesiidae) with description of two new species from western Argentina

“…nov. and L. nevadoensis sp. nov.) and two recently described Lycinus portoseguro Lucas and Indicatti, 2010 and Lycinus choros Lucas and Indicatti, 2010 for 27 characters (Table 1) from Goloboff (1995), removing invariant characters and adding a new one (character 26). The ingroup comprised 12 taxa: L. longipes Thorell, 1894; Lycinus gajardoi (Mello-Leitão, 1940); Lycinus caldera Goloboff, 1995;Lycinus tofo Goloboff, 1995;L.…”

“…To date, the family comprises 366 species and 43 genera of medium-sized spiders that have a transverse fovea, eyes grouped on a tubercle, two to four short spinnerets, anterior tarsi without spines, tarsi III and IV with light or absent scopula, without claw tufts, and female's superior tarsal claws bipectinate with numerous teeth (Goloboff 1995;Montes de Oca and Pérez-Miles 2013). Goloboff (1995) revised the species of Nemesiidae from Peru, Chile, Argentina, and Uruguay since only a few contributions to the systematics of this family concluded (Indicatti and Lucas 2005;Indicatti et al 2008;Lucas et al 2008;Lucas and Indicatti 2010;Montes de Oca and Pérez-Miles 2013). Neotropical nemesiids usually live in silk tubes constructed under stones or logs or in burrows covered by a trapdoor (Capocasale and Pérez-Miles 1990;Goloboff 1995;Ferretti et al 2011).…”

“…It can be quickly distinguished from Diplothelopsis Tullgren, 1905 by having the posterior median spinnerets present, and from Flamencopsis and Chilelopsis by the female patella IV having strong 1-1-1 prolateral spines'. The genus includes ten species, one from Argentina (L. longipes), eight from Chile, and one from Brazil (Goloboff 1995;Lucas and Indicatti 2010;Platnick 2014).…”

Two new species of Chaco Tullgren from the Atlantic coast of Uruguay (Araneae, Mygalomorphae, Nemesiidae)

“…Although morphological characters are somewhat equivocal, molecular data seem to support the group (Bond and Hedin 2006, Hedin and Bond 2006, Bond et al 2012). Goloboff (1995) conducted the last major revision of the South American species of this family; since, only a few contributions to the systematics of the Nemesiidae family have been made (Indicatti and Lucas 2005; Indicatti et al 2008; Lucas et al 2008; Lucas and Indicatti 2010). Nemesiids live in silk tubes under stones or logs, or in burrows that are covered by a trapdoor (Goloboff 1995).…”

Distribución geográfica de los ortópteros (Insecta: Orthoptera) presentes en las provincias biogeográficas de Atacama y Coquimbo (Chile)

“…El conocimiento de los artrópodos para estas regiones se basa en estudios taxonómicos y sistemáticos, siendo la ecología y biogeografía temáticas poco abordadas para esta zona del norte de Chile (Pizarro-Araya et al, 2008). Dentro de la artropodofauna, la mayoría de los trabajos son de carácter taxonómicos y sistemáticos de insectos, en particular Coleoptera (Jerez, 2000;Pizarro-Araya et al, 2008;Flores & Pizarro-Araya, 2012) y de arácnidos, con énfasis en Scorpiones (Ojanguren-Affilastro, 2002;Ojanguren-Affi lastro, 2004;Ojanguren-Affi lastro, 2005;Ojanguren-Affi lastro, 2006;Ojanguren-Affi lastro et al, 2007;Ojanguren-Affilastro et al, 2012), Araneae (Grismado, 2010;Lucas & Indicatti, 2010) y Solifugae (Valdivia et al, 2008;Valdivia et al, 2011).…”