Alexander Sanchez Ruiz

• PhD
• PCI at Museu Paraense Emilio Goeldi - MPEG

Type localities—the places of origin of the name-bearing type specimens of species and subspecies—are crucial for taxonomic identification and for maintaining taxonomic and nomenclatural stability. However, historical descriptions often lack precise or identifiable locality data. Pelegrín Franganillo Balboa described nearly 200 Cuban arachnids (192...

Four new species of Cubanops are described from Eastern Cuba: C. chamarreta sp. nov. (male and female), C. glochidiosus sp. nov. (male and female), C. guama sp. nov. (male and female) and C. serrucho sp. nov. (male). Also, an updated distribution map for all nine Cubanops species known from Eastern Cuba is included.

A re-analysis of the morphological phylogeny of the Nopinae is made, based on an update in the description of Aamunops Galán-Sánchez & Álvarez-Padilla, 2022 and the addition of the recently described genera Nopsma Sánchez-Ruiz, Brescovit & Bonaldo, 2020 and Roddemberryus Sánchez-Ruiz & Bonaldo, 2023. Two new species, Aamunops hoof sp. nov. (male) a...

The new nopine genus Roddenberryus gen. nov. is erected to include in total five species: three new species, R. kirk gen. et sp. nov. (male and female) from Costa Rica, R. spock gen. et sp. nov. (female) from Campeche, Mexico and R. mccoy gen. et sp. nov. (male) from Baja California Sur, Mexico, as well as two species previously misplaced in Caponi...

Three new six-eyed species of the spider genus Caponina Simon, 1891 are described, photographed, diagnosed and illustrated: C. alejandroi sp. nov. (male and female) from the Boyacá Department, C. bochalema sp. nov. (male) from the Santander Department and C. huila sp. nov. (male) from the Huila Department. Also, a emended diagnosis for the genus, a...

Ummidia is among the most ancient, highly diversified, widespread, morphologically static, and cryptic genera of mygalomorph spiders. Therefore, it constitutes a unique subject to investigate evolutionary processes, but also a very challenging group to study. Here, we provide the description and profuse illustration of the male and female of a new...

Four new Colombian species of the spider genus Medionops Sánchez-Ruiz & Brescovit, 2017 are described and illustrated: M. carolinae sp. nov. (male and female) from Boyacá department, M. cauca sp. nov. (male) from Cauca department, M. luiscarlosi sp. nov. (male and female) from Caldas department and M. santarosa sp. nov. (male) from Risaralda depart...

Three new Colombian species of the spider genus Nopsma Sánchez-Ruiz, Brescovit & Bonaldo, 2020 are described and illustrated: Nopsma leticia sp. nov. (male) from Amazonas department, Nopsma macagual sp. nov. (male) from Caquetá department and Nopsma paya sp. nov. (male and female) from Putumayo department. The collection data of the holotype of Nop...

The species of Syspira Simon from Hispaniola are revised and detailed documentation is provided for all known species from this island. Four new species (Syspira alayoni sp. n., S. armasi sp. n., S. barbacoa sp. n., and S. bryantae sp. n.), and the unknown male of Syspira agujas Brescovit, Sánchez-Ruiz & Bonaldo are described. New distribution reco...

The singular spider genus Nyetnops Platnick & Lise is revised and three new species are described from Peru (Nyetnops naylienae n. sp.), Bolivia (Nyetnops lachonta n. sp.) and Brazil (Nyetnops buruti n. sp.). An updated diagnosis is proposed for the type species Nyetnops guarani Platnick & Lise and new records from the Brazilian State of São Paulo...

Abstract.–The male of the endemic species Alpaida elegantula is described. Ten species are recorded for the first time from Martinique, Lesser Antilles: Wulfila sp. (Anyphaenidae), Eilica sp. (Gnaphosidae), Schizocosa sp. (Lycosidae), Microdipoena guttata (Mysmenidae), Nesticus sp (Nesticidae), Nesticella sp. (Nesticidae), Theotima minutissima (Och...

Objetos de conservación: las ocho especies endémicas del Caribe, Meriola sp., Schizocosa sp. 1, Schizocosa sp. 2, Schizocosa sp. 3, Scaphiella cimbalaria Simon, Loxosceles sp., Scytodes sp. y Acanthoscurria antillensis Pocock (C4) (C4), una especie endémica de Martinica, Alpaida elegantula (Archer) (C4) y las ocho posibles especies nuevas para la c...

The spider genus Nops MacLeay is revised, with redescriptions of 22 previously known species and descriptions of 12 new species. A new diagnosis for the genus is provided and keys to separate the species are proposed. After this revision Nops includes 34 extant species, thereof 15 (44%) occur in the Caribbean Islands, four (12%) in Central America...

Four new species of Syspira Simon, 1895 are described: Syspira cimitarra sp. nov., Syspira jimmyi sp. nov., Syspira medialuna sp. nov. and Syspira agujas sp. nov., all endemic in the Dominican Republic.

Un análisis cladístico basado en datos morfológicos fue ejecutado para probar la monofília de los géneros arañas de la subfamilia Nopinae (Caponiidae). Este es el primer análisis de este tipo en la familia, e incluyó representantes de los siete géneros actualmente conocidos en Nopinae: Cubanops Sánchez-Ruiz, Platnick & Dupérré, Medionops Sánchez-Ru...

The new genus Medionops is proposed for a group of caponiid spiders found in South America and Panama. Nops simla Chickering and Nops cesari Dupérré are transferred to this new genus. Additionally, five new species are described: the type species Medionops blades n. sp. from Colombia; Medionops claudiae n. sp., Medionops murici n. sp. and Medionops...

Entre los logros más sobresalientes del proyecto PNUD/GEF 3990 “Mejorando la prevención, control y manejo de especies exóticas invasoras en ecosistemas vulnerables en Cuba” está la redacción, por vez primera en el país, de documentos metodológicos destinados a guiar la realización de estudios investigativos de seguimiento del desarrollo de las pobl...

Citation: Brescovit AD, Sánchez-Ruiz A (2016) Descriptions of two new genera of the spider family Caponiidae (Arachnida, Araneae) and an update of Tisentnops and Taintnops from Brazil and Chile. ZooKeys 622: 47–84. Abstract New members of the spider family Caponiidae from Brazil and Chile are presented. Three new species in previously known genera...

A synopsis of Caribbean filistatid diversity is recorded herein. A new genus, Antilloides, is proposed for five new species exclusively found in the Antilles: A. abeli n. sp., A. cubitas n. sp., and A. mesoliticus n. sp. from Cuba; A. haitises n. sp. from the Dominican Republic; and A. zozo n. sp. from the U. S. Virgin Islands and Puerto Rico. The...

We update the knowledge of the unusual Caponiidae spiders from the West Indies with the description of four new species, and the redescription of Nops blandus (Bryant) including the first description of the female. Specimens previously assigned to N. blandus from Hispaniola and Puerto Rico represents two new species: Nops hispaniola n. sp. and Nops...

The Cuban spider species Nops ariguanabo Alayón, 1986 is transferred to the genus Tarsonops Chamberlin based on the presence of several false sutures on the anterior tarsi and metatarsi, and a broad, subcircular carapace. A redescription of the species, including the description of female internal genitalia is provided. Additionally, a new species...

Nosso alvo aqui são os filistatídeos do Caribe, um conjunto de mais de 4000 ilhas e ilhotas distribuídas em 230.000 Km², divididas em Grandes e Pequenas Antilhas. Na região haviam registros de apenas três espécies de Filistatidae: duas do gênero Kukulcania Lehtinen: K. hibernalis (Hentz) e K. isolinae (Alayón) e Filistatoides insignis (O. P.-Cambri...

The three known species of the genus Loxosceles Heineken & Lowe from Cuba and Hispaniola are revised and two new species, Loxosceles maisi sp. nov. and Loxosceles mogote sp. nov., are described from the eastern region of Cuba. These new species are included in the reclusa group, and are considered close to Loxosceles taino Gertsch & Ennik as they h...

The species Cithaeron praedonius O. P.-Cambridge is recorded from eastern Cuba. This is the first record of the family Cithaeronidae in the Caribbean Region. The presence in Cuba of this species is an accidental introduction, but its source is unknown.

The genus Caponina Simon, 1891 comprises eleven species of medium-sized, soil-dwelling caponiids. Most members of Caponina have six eyes, but some have five, four, three or two eyes (Brignoli 1977, Platnick 1994). The genus is widespread in South and Central America (Platnick 2012). To date, only three species have been recorded from Brazil: Caponi...

Se realiza un inventario rápido de las arañas de la Reserva Florística Manejada La Silla de Romano, Camagüey, Cuba. En total, se registran para el área protegida 52 especies, agrupadas en 42 géneros de 25 familias. Se registra por primera vez para el área y la provincia Camagüey, el único Ctenizidae encontrado en Cuba: Ummidianidulans (Fabricius, 1...

La familia de arañas Caponiidae es uno de los grupos de arañas más raro y más antiguo dentro del Orden Araneae, del cual se conoce relativamente poco. El presente estudio contribuye a incrementar los conocimientos sobre la sistemática y la biogeografía de esta familia de arañas en Cuba y La Española, los territorios de mayor tamaño y riqueza de esp...

Data about the spider genus Nops (Caponiidae) for the CarBio Project

Data about the spider genus Cubanops (Caponiidae) for the CarBio Project

A new genus, Cubanops, is established for a distinctive group of caponiid spiders from the West Indies. Nops ludovicorum Alayón, from Cuba, and Caponina darlingtoni Bryant, from Hispaniola, are transferred to Cubanops. Nine new species are described from the Bahama Islands (C. bimini, C. andersoni), Cuba (C. armasi, C. alayoni, C. juragua, C. granp...

Se describe una nueva especie de araña del género Nops MacLeay, 1839, procedente de Little St. James, Islas Vírgenes de Estados Unidos de América, Antillas Menores. Con este hallazgo se eleva a 16 especies la fauna de Caponiidae de las Antillas. Se incluye además una lista anotada de las 13 especies de arañas del género Nops presentes en las Antill...

The known distribution of Cyrtophora citricola (Forskål, 1775) is extended to Camagüey Province in Cuba. At the moment, these are the more western records of this invasive exotic species in Cuba.

As a result of the identification and cataloguing of the spiders collection of the Museo Nacional de Historia Natural, Santo Domingo (MNHNSD) and the revision of additional material from Dominican Republic, are recorded for first time from The Hispaniola four genera occurring in Central America and the West Indies but unknown from this island: Mast...

Sampling of arthropods soil fauna were made with the objective to compare the composition of the communities of these invertebrates after three years of the fire on the Pine forest from José del Carmen Ramírez National Park. Two areas with different affectation were sampling: high impact of the fire (AAI) and medium impact (AMI). These areas were c...

A rapid biological inventory of spiders from Limones-Tuabaquey Ecological Reserve was conducted. 71 species, 59 genera and 26 families are reported for this protected area. The species Homalometa nigritarsi Simon, 1897 (Tetragnathidae) is reported for the first time for Cuba and Greater Antilles. The geographic limits of other five species are enla...

Se analizan diferentes patrones de stabilimentum en cuatro especies de Araneidae cubanos: Argiope argentata (Fabricius, 1775), Cyclosa walckenaeri (O. P.-Cambridge, 1889), Gea heptagon (Hentz, 1850) y Gasteracanta cancriformis (Linnaeus, 1758). Se ilustran por primera vez estos patrones y las características de cada uno de ellos. La especie Argiope...

The available data about the distribution of Cyrtophora citricola (Forskål, 1775) in Cuba are augmented. The presence and distribution of this species in the archipelago is discussed, as well as the main habitats and substrates where builds their webs.

Alexander Sánchez-Ruiz A new species of the spider genus Nops MacLeay, 1839 is herein described from Jarabacoa, La Vega province, Dominican Republic. The finding of this species elevates to five the number of species of Caponiidae present in The Hispaniola. Some aspects about the taxonomy of the genus Nops in the West Indies are discussed.

Nest of six species of aculeate wasps (Hymenoptera: Vespidae, Sphecidae and Apidae) were studied between 1994 and 1995 at two localities in Eastern Cuba. The data recorded for each species included number of cells, prey used for nest supply, inquilines, parasitoids, pathogens and necrophagous. The species (and number of nests) studied were: Pachody...

All information known about the spider species of the family Caponiidae recorded from Cuba is compiled. Two new species of the genus Nops MacLeay, 1839 (Araneae, Caponiidae) are described from eastern Cuba, raising to seven the number of species in the Caponiidae fauna of this archipelago.

Después de visitar 89 localidades del macizo montañoso Sagua-Baracoa (Cuba), se da a conocer un listado de las 157 especies agrupadas en 120 géneros y 35 familias de arañas localizadas en este macizo montañoso. Son discutidos además aspectos de la riqueza, endemismo, y abundancia de algunas de las poblaciones, y se dan a conocer 36 nuevos registros...

Se realiza un análisis de la eficiencia y sesgo que establecen dos métodos de colecta pasivos: trampa de caída y trampa de intercepción, en varios ecosistemas boscosos del macizo Sagua-Baracoa (Cuba). La proporción de las familias de arañas capturadas en cada uno de los métodos, demuestra la segregación de los gremios que abarca cada método y por t...

Se describe la depredación de un espécimen juvenil del escorpión Buthidae Rhopalurus junceus (Herbst), por una araña Caponiidae Nops guanabacoae MacLeay. Este constituye el primer registro para Cuba sobre la alimentación de un capónido en condiciones naturales, y una nueva adición a la lista de depredadores conocidos para este escorpión.

Se dan a conocer algunos aspectos relacionados con la biología de la especie Amphiacusta vicaria Ruiz y Otte, 1997. A partir de cruzamientos realizados entre ejemplares de dos poblaciones que se desarrollan en hábitats completamente diferentes Sardinero y Gran Piedra (Santiago de Cuba) , se obtienen datos relacionados con el número de huevos puesto...

Se dan a conocer algunos aspectos relacionados con la biología de la especie Amphiacusta vicaria Ruiz y Otte, 1997. A partir de cruzamientos realizados entre ejemplares de dos poblaciones que se desarrollan en hábitats completamente diferentes Sardinero y Gran Piedra (Santiago de Cuba) , se obtienen datos relacionados con el número de huevos puesto...