José G. Palacios-Vargas

Universidad Nacional Autónoma de México | UNAM · School of Science

Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil arthropods regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains...

This chapter examines Mexican caves and their entire fauna. Caves are important in Mexican science, cultural history, and economy, since pre-Columbian times. They provide access to groundwater and support many species, including bats, which are important to ecosystem services and agriculture. Bats control insects, pollinate plants, and spread essen...

In this contribution, supplementary descriptions of Cyphoderus innominatus Mills, 1938 and C. limboxiphius nitricola Rapoport & Izarra, 1962 are provided; and three new species are described: C. adversus sp. nov., C. amazonicus sp. nov., and C. parafolsomi sp. nov.; chaetotaxy for all of them is included. The new species have a labial triangular fi...

Ptychoid mites from Mexico are diverse, represented by 60 species of 17 genera. Data includes 6 genera and 21 species of the family Steganacaridae. Currently 5 species of the genus Atropacarus (Hoplophorella) are recorded in the country. Herein we present redescriptions and new records of A. (H.) singularis from Quintana Roo and A. (H.) hamatus fro...

Pachyotoma primamexicana sp. nov, from Popocatépetl, Mexico is described; it is similar to Pachyotoma alpa (Christiansen & Bellinger, 1980) and P. muskegis (Guthrier, 1903). It can be distinguished from all other the members of the genus by the small size of PAO (about half the size of closest eye) and the formula (2,3,3) of the slightly capitate t...

Soil contamination by hydrocarbons and its effects on population health and welfare is a growing concern, especially in urban environments with industrial activity. Indicator species complement the information obtained from the measurement of environment quality by using physicochemical variables. The objective of this study was to evaluate the res...

Mites and springtails associated to hermit crabs Coenotiba clypeatus.

Complement to the diagnosis of Sminthurides Börner is given and illustrated with Scanning Electron Microscopy (SEM) photos, and a new Mexican species of this genus is described with specimens from Tabasco State. It belongs to penicillifer group, characterized by the presence of two trichobothria on second antennal segment. Males of the new species...

Springtails (Collembola) from two temperate forest sites, “Ejido Los Búfalos” (LB) and “Bosque Mágico de Piedra Canteada, Santuario de la Luciérnaga” (PC), in Tlaxcala state, central Mexico, were sampled monthly with Malaise traps. More than 38,000 specimens from 10 species were collected and studied. Although abundance values between both study si...

The soil fauna of the tropics remains one of the least known components of the biosphere. Long-term monitoring of this fauna is hampered by the lack of taxonomic expertise and funding. These obstacles may potentially be lifted with DNA metabarcoding. To validate this approach, we studied the ants, springtails and termites of 100 paired soil samples...

Por medio de la fumigación de 2 especies arbóreas con piretrinas naturales en la selva tropical húmeda de Los Tuxtlas, Veracruz, se obtuvieron 6 especies del género Scapheremaeus, una de ellas es una especie nueva para la ciencia con caracteres especializados a la vida arbórea que se describe aquí. Con los caracteres diferenciales de la especie nue...

Spinactaletes boneti mitochondrial genome was assembled and annotated. It has 14,766 bp in length, all 37 genes are present and the gene order is the same as the Pancrustacean ancestral gene order. Phylogenetic analyses based on maximum likelihood placed the species as a sister group of the remaining Entomobryomorpha, not closely related to the Iso...

Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil animals regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains un...

A revision of 3 endemic genera and their type species from the Patagonian subregion is presented. Cassagnaurida dentata (Cassagnau et Rapoport, 1962) and Delamarellina globulosa Cassagnau et Rapoport, 1962 are redescribed. A complement to the description of Notachorudina patagonica Cassagnau et Rapoport, 1962 is done with specimens from several loc...

The genus Galumnopsis (Galumnellidae) is recorded for the first time from Mexico with a new species described here, and Notogalumna (Galumnidae), represents a second record for the country, also with a new species; both from the tropical rainforest in Veracruz state. Notogalumna rickiglesiasi sp. nov. lives in the canopy, while Galumnopsis andydore...

A new species of Pronura from the Luquillo Experimental Forest on Northeastern Puerto Rico is described and illustrated. Pronura yunquensis sp. nov. differs from other Neotropical Pronura in the absence of eyes and can be separated from other species of the genus by the presence of a head tubercle (De), the displacement of Di1 in Abd IV and the fus...

Four new Mexican Parajapyx species are described: P. silvestrii sp. nov. differs from P. adisi Pagés by the presence of one ma macroseta on mesoscutum, metascutum and abdominal scutum I; P. pagesi sp. nov. differs from P. grassianus Silvestri in the arrangement and number of macrosetae on all abdominal scuta; P. brunocondei sp. nov. is characterize...

A survey of Sminthurides Börner, 1900 with specimens from the Americas was performed and two new species from Mexico are described and illustrated (drawings and SEM photographs), including a detailed study of body chaetotaxy. Sminthurides cihuatlensis sp. nov. is part of the Aquaticus group by the presence of ciliate seta B1 on Ant. II; it has a na...

A new species of Protobelba (Oribatei: Damaeidae) from Costa Rica is described and illustrated. Additional records from the country are included.

Neotropiella quinqueoculata (Denis, 1931) is redescribed, SEM photos and drawings are included, new localities, intraspecific variation, phenology and ontogenetical development are given. Complement to N. silvestrii (Denis, 1929) and N. carli (Denis, 1924) are also added. New records, confirmation or ratifications of distribution for the three tax...

Robust data to refute or support claims of global insect decline are currently lacking, particularly for the soil fauna in the tropics. DNA metabarcoding represents a powerful approach for rigorous spatial and temporal monitoring of the taxonomically challenging soil fauna. Here, we provide a detailed field protocol, which was successfully applied...

Se estudió la diversidad, riqueza y abundancia de Collembola, en el dosel de un bosque mesófilo en el Estado de Hidalgo, México, durante las estaciones lluviosa y seca de 2004 y 2005, mediante fumigaciones con Piretrinas naturales en tres áreas: una en la zona de borde cerca del camino, otra ubicada a una distancia intermedia, y la tercera en la zo...

Neotropiella is a genus of springtails which can be of medium size (2 mm) or relatively long (5 mm). These springtails live in leaf litter, under the bark of dead trees or in decomposing wood, mainly in the Neotropical Region and are often collected by litter samples on Berlese funnels or by pitfall traps. Most species have been described, based on...

The knowledge of the Collembola of Morelos is still incipient, only 50% of the ecological regions have been studied. However, it is one of the states where there are more records due to its proximity to Mexico City and to research centers. The conservation of areas where there is a great diversity is relevant, but it is also important that the spec...

Datos suplementarios articulo Epiedaphic springtails (Hexapoda: Collembola) in two soil uses of Colombia Eastern plains. APÉNDICE 1 Abundancia relativa por género para cada orden en la época húmeda y seca APPENDIX 1 Relative abundance by gender for each order for the wet and dry season

The whip spider (Amblypygi) genus Paraphrynus Moreno, 1940 is distributed from the southern U.S.A. to the Greater Antilles and northern South America. Mexico is the diversity hotspot of the genus where many morphologically similar species occur, often in close geographical proximity. The present contribution aimed to resolve the diversity and phylo...

We here describe a new Collembola species, Hylaeanura emiliae sp. nov. , from the Luquillo Experimental Forest in Puerto Rico. We describe H. emiliae sp. nov. as a distinct species based on the enlarged sensilla s3 in antennal segment IV, the absence of modified sensorial setae in abdominal segment IV and the presence of four setae on each dens. An...

RESUMEN. Se estudió la diversidad y abundancia de los ácaros prostigmados y endeostigmados del Valle de Cuatro-ciénegas y su asociación con los distintos tipos de vegetación que se presentan en la localidad del Churince. Durante 2015-2016, se recolectaron muestras de suelo asociadas a 5 tipos de vegetación; los microartrópodos fueron extraídos usan...

The new genus Borgesminthurinus gen. nov. from Bolivia shares with Sminthurinus the presence of antennal segment IV undivided, antennal segment III with one papilla; sacs of ventral tube smooth; each tenacular rami with 3 teeth and a basal appendix. They also have dens with ventral chaetotaxy reduced and lack mucronal seta; but new genus clearly di...

Se describe Phyllozetes aldretei sp. nov. un ácaro cosmoctónido de suelos oligotróicos en el Desierto Chihuahuense de México. Esta nueva especie se diferencia del resto de sus congéneres por poseer las sedas rostrales birrámeas, con sus ramas biidas, en forma de “V” y conectadas por una membrana hialina . Adicionalmente, la combinación de sedas eré...

A review is made about the academic activities, explorations and congresses in which Espleogrupo Yucatán participated as a ember of the Union Mexicana de Agrupaciones Espeleológicas , A. C. from 1985 to 1998. Their participation in the organization of several national congresses and conference of UMAE, A. C. particular in the first national congres...

One new species of springtail, Oudemansia chenorum sp. nov., is described and illustrated. Pseudanurida sawayai Schuster, 1965 is reported from Hainan Island for the first time. An identification key for the species of Oudemansia Schött, 1893 is provided and remarks are made on its peculiar morphology as well as that of close related genera. The pr...

Odontella rapoporti sp. nov., from Tierra del Fuego is described, as the third species of the Odontella lobata group, which has a subantarctic distribution. The new species is similar to O. lobata and O. setosa, but can be distinguished from them by the number of chaetae on the dens (6 or 7 chaetae in O. setosa vs. 5 chaetae in the other species) a...

Se evaluó el efecto de la cobertura vegetal en la producción y crecimiento de hojas de Pittocaulon praecox en dos sitios contrastantes, cerrado y abierto, en un matorral xerófilo. En cada sitio se registró longi­tud, número de hojas y crecimiento total, temperatura, humedad, concentración de CO2, y cantidad de hojarasca producida. Se hizo un anális...

A new diagnosis for Acheroxenylla Ellis, 1976 is proposed, based on new characteristics recently discovered in other species of the genus. A new species living on guano from oil bird guacharo is described and illustrated and its Barcode Index Number (BIN) from BOLD System is given. A key for the identification of the four known species is also incl...

Pseudachorudina navarretei sp. nov. from Mapimí Desert, Durango, México, is described. It is similar to the American species P. texensis and P. ignotusChristiansen and Bellinger, 1980, all of them with 1 dorsal strong capitated tenent hair on tibiotarsi. It differs in the shape of the maxillary lamellae, one with 4 sharp big teeth and one semispher...

A new species of Furculanurida is described and illustrated. Furculanurida bistribussp. nov. differs from other species of the genus by the presence of three eyes, three setae on the dens, and the white and purple coloration pattern. A key for identification of the world species of the genus is included.

This book includes information of all the groups of Panarthropoda: diagnosis, number of species, tagmosis, etc. Pictures of the habitus with tagmosis, photos under phase contrast microscope and scaning electron microscope. It also contains a glosary of most common terminoly of cuticular structures and other terms related with them.

The afforestation of savannas, previously dedicated to extensive cattle ranching, with fast-growing forest species is a growing phenomenon in the Colombian Orinoquía. In order to estimate changes in the springtail communities due to the establishment of Acacia mangium in the savannas, their diversity in plantations of 1, 3 and 5 years was compared...

This paper analyzes the community structure of edaphic oribatid mites from the tropical forest at Los Tuxtlas, Veracruz, showing its monthly variation during only one year, considering two contrasting tree species and their relation with abiotic edaphic parameters. Randomly, five Astrocaryum mexicanum and Guarea glabra plants were chosen and near t...

Friesea incognita sp. nov. is described from China. This new species is characterized by the combination of: 2 + 2 eyes, no capitate tenent hairs on tibiotarsi, three anal spines, furcula without mucro and dens with 3 setae. Total dorsal and ventral chaetotaxy of the new species is given. A revised key for identification of the species of this genu...

Willemia panamaensis sp. nov. from Panama is described and illustrated. It is characterised by the presence of sensilla I (S2) and i1 (S9) on antennal segment IV, nine vesicles in the postantennal organ, and having dorsal setae and sensilla on abdominal segments V and VI twice as long than on segments I and II. A dichotomous key to species recorded...

La presente obra inicia con una amplia diagnosis de los artrópodos poniendo énfasis en el tegumento y sus componentes, para después hacer un compendio de definiciones de lo que actualmente ha sido denominado como Ecdysozoa.

A taxonomic list of recorded Symphypleona from Mexico is presented. Data also includes a nomenclatorial update, distribution per political entity and habitat preferences. It is indicated that 28 genera and 73 species are currently distributed in 23 of the 32 states of Mexico. Quintana Roo represents the most diverse state (27 species) followed by J...

A new species of Pergalumna from soil and litter was reared in laboratory and a description of adult and juveniles is provided. Adults are characterized by having bands of striae in the posterior part of notogaster, the interlamellar seta are longer than all other prodorsal setae and the lenticular area covers most of the prodorsum. It differs from...

The family Neotrombidiidae includes only four genera worldwide, being the genus Neotrombidium which presents the highest number of species. Is characterized by present parasitic larvae of several groups of xylophagous and corticicolous beetles, however, its determination is difficult and the knowledge about his biology and distribution is scarce an...

The objective of this work is to know the structure (composition and density) of the community of the oribatid mites and their relationship to edaphic parameters in 2 agricultural parcels with different type of irrigation. It constitutes the first work done with oribatid mites in agricultural plots irrigated with waste water in Mexico. Two agricult...

A new genus of springtail, Sernatropiella gen. nov., from Cundinamarca province, Colombia, was found at an altitude close to 3.000 m above sea level. It is the largest Neanuridae known in the Northern part of the South American Transition Zone. It is characterized by the presence of a strong hypertrichosis, five eyes per side, very small moruliform...

A new species of Cosberella is described and illustrated from a temperate forest of Citlaltépetl formation, Veracruz State. It is characterized by the following combination of characters: Th I with 2 + 2 dorsal setae; 2 + 2 axial setae on Th II–III; two capitate tenent hairs on each leg; unguiculus half the length of unguis; unguis with tooth; six...

The International Commission on Zoological Nomenclature has used its plenary power to rescind Direction 71, which was issued in 1957 and which deemed deeming Lepisma Linnaeus, 1758 to be of feminine gender and all generic names derived from it (i.e. those ending in-lepisma) are now ruled to be of neuter gender.

Neelus fimbriatus is redescribed using specimens from Colombia. Drawings and phase contrast microscope photos of the species are used. New characters are used as tibiotarsal tuberculate setae and abdominal ventral acetabula.

The new species Paraxenylla mahahualana sp. nov. from Quintana Roo is described, it is similar to P. cubana, and shares the presence of ventral tube with 1 + 1 seta but differs in having tibiotarsi with 5 tenent hairs and 5 cylindrical sensilla on antennal segment IV and 3 + 3 tenacular teeth. A key for the 10 species known in the genus is also giv...

A revision of Palmanura is presented, P. klompeni sp. nov. P. moralesi sp. nov., P. contrerasi sp. nov. and P. axelretanai sp. nov. are described and illustrated, and P. normae Palacios-Vargas, 1996 and P. sernai Palacios-Vargas & Simón Benito, 2009 are redescribed. New records and distribution data are given for several species and a key for ident...

Scapheremaeus dirzoius sp. nov. lives on the canopy of trees of Astrocaryum mexicanum Liebm. ex Mart (Arecaceae) and Guarea glabra Kunth (Meliaceae) in the tropical rainforest of Los Tuxtlas, Veracruz, it is similar to S. flamiferus Palacios-Vargas and Ríos, 1998, which lives on epiphytic Tillandsia (Bromeliaceae) from Nicaragua. They differ in the...

Ontogenetic development of Pergalumna sp. nov. (Acari: Oribatida) under breeding and comparison with other Galumnidae ABSTRACT. The study of the juvenile stages of oribatid mites worldwide has been little explored, there are less than 10% of the species has associated data on their immature stages; scarcer are the works that have obtained these sta...

A new diagnosis of Denisiella is provided, based on the revision of most descriptions, including three new species from Brazil. New Brazilian taxa share the presence of 6 + 6 eyes, 4 + 4 serrate spine-like on tibiotarsi III and the polycarinate setae on tibiotarsi II but differ from each other by the shape and size of the sensilla of the tibiotarsi...

Springtails are mostly terrestrial organisms, relatively rare in truly aquatic environments; a few are neustonic while others are found in humid caves, surfaces, and crevices of marine coastal zones. We have found them in the benthic zone of 4 deep lakes, Bosque Azul, Dos Lagos, Ensueño, and Tziscao of Lagunas de Montebello National Park in Chiapas...

The abundance of Collembola families were studied in three localities with four different land-use types: forest, agroforestry, grassland and corn crop, all located in the Santa Marta Range, Los Tuxtlas Biosphere Reserve, Veracruz, Mexico. Samples of litter and soil were collected in each land use during the dry season, February and March 2005, and...

Honduranura gen. n. and the type species H. centraliamericana sp. n. are described and illustrated. The new genus shows the characters of Sensillanurini Cassagnau, 1983 tribe and is distinguished by the fusion of cephalic and abdominal tubercles: clypeal with antennofrontal and dorsointernal with dorsoexternal on head; presence of fused tubercles o...

Four species of Collembola were found in nests of the ant genera Myrmicocrypta, Trachymyrmex and Sericomyrmex of the tribe Attini (Formicidae: Myrmicinae). The panmyrmecophilic collembolan Cyphoderus (Lepidocyrtidae: Cyphoderinae) was the most abundant and was associated with all the ants. The collembolan genus Mucrosomia (Isotomidae: Anurophorinae...

A new species of Lohmannia, L. maya n. sp., from mangrove soils in Mexico is described and illustrated. It is morphologically similar to L. similis Balogh, 1962, L. jornoti Mahunka, 1985 and L. lanceolata Grandjean, 1950 but differs from these species in having lateral and posterior setae wide in their proximal half and thin in their distal half, e...

Members of the genus Paleonura Cassagnau, 1982 from the Americas are compared with some from the holarctic region. The new species, P. borincana sp. nov., is described from Puerto Rico. It differs from other species of the genus by the combination of having cephalic setae A, B, C, D, two ocular setae and the lack of setae on the dorso-external tube...