00512nas a2200109 4500008004100000245019100041210006900232300001300301490000800314100003300322856004700355 2015 eng d00aPhylogeny of the spider genus Ixchela Huber, 2000 (Araneae: Pholcidae) based on morphological and molecular evidence (CO1 and 16S), with a hypothesized diversification in the Pleistocene0 aPhylogeny of the spider genus Ixchela Huber 2000 Araneae Pholcid ain press0 v1751 aValdez-Mondragón, Alejandro uhttps://arachnids.myspecies.info/node/835201479nas a2200181 4500008004100000245012900041210007100170300000900241490000700250520087900257653001201136653002501148653001401173653001601187653001601203100003301219856004501252 2010 eng d00aRevisión taxonómica de Physocyclus Simon, 1893 (Araneae: Pholcidae), con la descripción de especies nuevas de México0 aRevisión taxonómica de Physocyclus Simon 1893 Araneae Pholcida a3-800 v183 a

Se realizó la revisión taxonómica de Physocyclus Simon, 1893. Se redescribieron 12 especies con descripciones originales incompletas. Se presentan nuevos registros de distribución para la mayoría de las especies. Se describe por primera vez el macho de Physocyclus lautus Gertsch, 1971. Se describen 13 especies nuevas: Physocyclus franckei sp. nov., Physocyclus michoacanus sp. nov., Physocyclus brevicornus sp. nov., Physocyclus gertschi sp. nov., Physocyclus huacana sp. nov., Physocyclus montanoi sp. nov., Physocyclus marialuisae sp. nov., Physocyclus sprousei sp. nov., Physocyclus darwini sp. nov., Physocyclus rothi sp. nov., Physocyclus sarae sp. nov., Physocyclus platnicki sp. nov. y Physocyclus paredesi sp. nov. Se presentan claves dicotómicas para la identificación de las especies del género, una clave para machos y una para hembras.

10aAraneae10aclaves taxonómicas10aMéxico.10aPhysocyclus10ataxonomía1 aValdez-Mondragón, Alejandro uhttps://arachnids.myspecies.info/node/6002094nas a2200181 4500008004100000022001400041245015300055210006900208300001200277490000900289520144900298653002401747653001201771653002501783653001301808100003301821856005801854 2013 eng d a1175-533400aTaxonomic revision of the spider genus Ixchela Huber, 2000 (Araneae: Pholcidae), with description of ten new species from Mexico and Central America0 aTaxonomic revision of the spider genus Ixchela Huber 2000 Aranea a285-3270 v36083 aA taxonomic revision of the genus Ixchela Huber, 2000 is presented. The previously described five species are redescribed with new taxonomic information and new distribution records. The males of Ixchela placida (Gertsch, 1971) and Ixchela simoni (O. Pickard-Cambridge, 1898) are described for the first time. Ten new species are described, nine from Mexico and one from Honduras: Ixchela mixe new species, Ixchela huberi new species, Ixchela juarezi new species, Ixchela grix new species, Ixchela taxco new species, Ixchela franckei new species, Ixchela tzotzil new species, Ixchela santibanezi new species, Ixchela huasteca new species, and Ixchela viquezi new species. Identification keys for males and females are presented. Se realizó la revisión taxonómica del género Ixchela Huber, 2000. Las cinco especies previamente descritas son redescri- tas con nueva información taxonómica y nuevos registros de distribución. Los machos de Ixchela placida (Gertsch, 1971) e Ixchela simoni (O. Pickard-Cambridge, 1898) son descritos por primera vez. Se describen 10 especies nuevas, nueve de México y una de Honduras: Ixchela mixe sp. nov., Ixchela huberi sp. nov., Ixchela juarezi sp. nov., Ixchela grix sp. nov., Ixchela taxco sp. nov., Ixchela franckei sp. nov., Ixchela tzotzil sp. nov., Ixchela santibanezi sp. nov., Ixchela huasteca sp. nov., e Ixchela viquezi sp. nov. Claves de identificación para machos y hembras son presentadas.10aidentification keys10aIxchela10aKey words: Pholcidae10ataxonomy1 aValdez-Mondragón, Alejandro uhttp://www.mapress.com/zootaxa/2013/f/z03608p327f.pdf02024nas a2200157 4500008004100000245009300041210006900134300001200203490000700215520149300222653001901715653001401734653001601748100003301764856006901797 2013 eng d00aMorphological phylogenetic analysis of the spider genus Physocyclus (Araneae: Pholcidae)0 aMorphological phylogenetic analysis of the spider genus Physocyc a184-1960 v413 a

With 30 species and a natural distribution in North America, 28 confined to Mexico, Physocyclus Simon 1893 is the most diverse genus within the pholcid spider subfamily Arteminae. This paper provides the first phylogenetic test of the genus’s monophyly through a cladistic analysis of 54 morphological characters using equal and implied weighting. The equally weighted analysis found 12 most parsimonious trees, whereas the analysis with implied weights varying the concavity values (K 5 6–10) found five or six most parsimonious trees. The monophyly of the genus Physocyclus is supported by three synaphomorphies: 1) the paired ventral apophysis on the anterior part of the epigynum; 2) the lateral constraints in the middle part of the epigynum; and 3) the arc of the uterus, with a single sclerotized projection on the anterior part. The genus Physocyclus contains two clades treated as species groups: the globosus group, with 11 species, and the dugesi group with 19 species. The species relationships within the globosus group were better resolved than those in the dugesi group. The globosus group has a biogeographical distribution pattern in the Mesoamerican and Mexican Mountain biotic components, whereas the dugesi group has a distribution pattern in the Mesoamerican and Continental Nearctic biotic components. Given the complex biogeography in Mexico, apparently a large-scale vicariant event separated the two major clades within the genus Physocyclus.

10acellar spiders10aPholcidae10aPhysocyclus1 aValdez-Mondragón, Alejandro uhttps://www.biodiversitylibrary.org/item/223304#page/94/mode/1up01994nas a2200121 4500008004100000245023000041210006900271300001200340490000900352520143300361100003301794856004501827 2014 eng d00aA reanalysis of the morphological phylogeny of the spider genus Physocyclus Simon (Araneae: Pholcidae) with the description of a new species and description of the female of Physocyclus paredesi Valdez-Mondragón from Mexico0 areanalysis of the morphological phylogeny of the spider genus Ph a202-2200 v38663 a

A new species of spider from Michoacán, Physocyclus peribanensis sp. nov. is described. This description is based on a male holotype and one female paratype. Also, the first description of the female of Physocyclus paredesi Valdez-Mon- dragón from Oaxaca, Mexico is provided, as well as the redescription of the male. This paper provides a cladistic reanal- ysis of the spider genus Physocyclus Simon, corroborating the monophyly of the genus with morphological data. The phylogenetic reanalysis was done with 54 morphological characters (44 binary and 10 multistate) using equal and implied weighting approach. The equal weighting analysis found two most parsimonious trees, whereas the analysis with implied weighting found just one most parsimonious trees with the concavity values (K= 5–10). The genus Physocyclus is com- posed by two clades or species groups: the globosus and the dugesi groups. Physocyclus peribanensis sp. nov. belongs to the dugesi group composed of 21 species, and P. paredesi to the globosus group composed of 11 species. With the new species described here, the number of known species of the genus Physocyclus increases to 32 species. The globosus group has a biogeographical distribution pattern in the Mesoamerican and Mexican Mountain biotic components, whereas the dugesi group has a biogeographical distribution in the Mesoamerican and Continental Nearctic biotic components.

1 aValdez-Mondragón, Alejandro uhttps://arachnids.myspecies.info/node/1401022nas a2200133 4500008004100000245010800041210006900149300001200218490000900230520044700239100003200686700003300718856013700751 2014 eng d00aA new troglobitic species of the spider genus Tengella Dahl (Araneae, Tengellidae) from Chiapas, Mexico0 anew troglobitic species of the spider genus Tengella Dahl Aranea a377-3860 v37643 a

A new species of troglobitic spider of the genus Tengella Dahl is described from Mexico: Tengella kalebi new species, from a limestone cave in Chiapas, Mexico. The species is described on the basis of adult male and females. This is the fifth species described for the genus Tengella, the third species described from Mexico, the first species that has notable troglomorphic modifications, and the first ecribellate Tengella species.

1 aCandia-Ramírez, Daniela, T1 aValdez-Mondragón, Alejandro uhttps://www.academia.edu/6036682/A_new_troglobitic_species_of_the_spider_genus_Tengella_Dahl_Araneae_Tengellidae_from_Chiapas_Mexico